Cisco Systems 3825 User Manual

Download

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

August 14, 2008

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 527-0883

Text Part Number: OL-15667-03

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The following inform ation is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.

Modifying the equipment without Cisco’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television communications at your own expense.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:

• Turn the television or radio antenna until the interference stops.

• Move the equipment to one side or the other of the television or radio.

• Move the equipment farther away from the television or radio.

• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)

Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

IMPLIED, INCLUDING, WITHOUT

CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, Cisco TelePresence, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Cisco

Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQ Expertise, the iQ logo, iQ LightStream, Linksys, MediaTone, MeetingPlace, MeetingPlace Chime Sound, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx

logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0807R)

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems,

Net Readiness Scorecard, iQuick Study, IronPort, the IronPort logo,

Preface vii

Document Revision History vii

Objectives vii

Audience viii

Organization viii

Conventions viii

Preface

This preface describes the objectives, audience, organization, and conventions of this software configuration guide.

This preface contains the following sections:

• Document Revision History, page vii

• Objectives, page vii

• Audience, page viii

• Organization, page viii

• Conventions, page viii

• Related Documentation, page ix

• Obtaining Documentation, Obtaining Support, and Security Guidelines, page x

Document Revision History

The Document Revision History table below records technical changes to this document. The table shows the document revision number for the change, the date of the change, and a brief summary of the change. Note that not all Cisco documents use a Document Revision History table.

Revision Date Change Summary

OL-15667-03 August 14, 2008 Provided the following information for Cisco IOS 12.4(19)MR):

OL-15667-02 April 1, 2008 Introduced the following features with Cisco IOS 12.4(16)MR2:

OL-15667-01 March 6, 2008 Initial release.

Described use of the ima group-id command, which the user can employ to configure the IMA Group ID on an IMA interface.

Keyword ignore-vpi-vci added to the xconnect command for n:1 VCC cell mode PW

Objectives

OL-15667-03

This guide explains how to configure features that enable the Cisco 3825 Mobile Wireless Edge Router to be implemented in an IP Radio Access Network-Optimization (RAN-O) environment.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

vii

Audience

This publication is designed for the person who will be responsible for configuring the router. This guide is intended for the following audiences:

• Customers with technical networking background and experience

• System administrators who are familiar with the fundamentals of router-based internet working, but

• System administrators who are responsible for installing and configuring internetworking

Organization

The major sections of this software configuration guide are listed in the following table:

Chapter Title Description

Chapter 1 Overview of the

Chapter 2 Cisco IOS Software Basics Describes what you need to know about the Cisco IOS

Chapter 3 First-Time Configuration Describes how to use the setup command facility to

Chapter 4 Configuring the

Appendix A Cisco 3825 Mobile Wireless

Appendix B Configuration Examples Provides examples of configurations.

who may not be familiar with Cisco

equipment, and who are familiar with Cisco

Cisco 3825 Mobile Wireless Edge Router

Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line Interface

Edge Router RAN-O Command Reference

IOS software

Preface

IOS software

Describes the purpose of the Cisco 3825 router and its unique software features.

software.

configure basic attributes of your router.

Describes how to use the Cisco IOS software CLI to configure basic router functionality in a RAN-O environment.

Provides information about new and changed commands.

Conventions

This publication uses the following conventions to convey instructions and information.

Convention Description

boldface font Commands and keywords.

italic font Variables for which you supply values.

[ ] Keywords or arguments that appear within square brackets are optional.

{x | y | z} A choice of required keywords appears in braces separated by vertical bars. You must select one.

screen font

boldface screen

font

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

viii

Examples of information displayed on the screen.

Examples of information you must enter.

OL-15667-03

Preface

Convention Description

< > Nonprinting characters, for example passwords, appear in angle brackets.

[ ] Default responses to system prompts appear in square brackets.

Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the

manual.

Timesaver Means the described action saves time. You can save time by performing the action described in the

paragraph.

Tip Means the following information will help you solve a problem. The tips information might not be

troubleshooting or even an action, but could be useful information, similar to a Timesaver.

Caution Means reader be careful. In this situation, you might do something that could result in equipment

damage or loss of data.

Overview of the Cisco 3825 Mobile Wireless Edge Router

The Cisco 3825 Mobile Wireless Edge Router is a networking platform optimized for use in mobile wireless networks; specifically designed to be used at the cell site edge as a part of a 2G, 3G or 4G Radio Access Network platform specializing in 2/2.5G Global System for Mobile Communication (GSM) and 3G Universal Mobile Telecommunication System (UMTS) RAN backhaul transport and optimization.

The Cisco 3825 router offers high performance at a low cost while meeting the critical requirements for deployment in cell sites, including small size, high availability, and

DC input power flexibility.

This chapter includes the following sections:

• Introduction, page 1-1

• Cisco IOS Software Features, page 1-6

(RAN). The Cisco 3825 Mobile Wireless Edge Router is a general purpose router

Introduction

• MIB Support, page 1-10

• Limitations and Restrictions, page 1-11

• New Features in Cisco IOS Release 12.4(16)MR2, page 1-13

• New Features in Cisco IOS Release 12.4(16)MR1, page 1-13

• New Features in Cisco IOS Release 12.4(16)MR, page 1-27

A typical RAN is composed of thousands of Base Transceiver Stations (BTSs)/Node Bs, hundreds of Base Station Controllers/Radio Network Controllers (BSCs/RNCs), and several Mobile Switching Centers (MSCs). The BTSs/Node Bs and BSCs/RNCs are often separated by large geographic distances, with the BTSs/Node Bs located in cell sites uniformly distributed throughout a region, and the BSCs, RNCs, and MSCs located at suitably chosen central offices (COs) and/or Mobile Telephone Switching Offices (MTSOs). The traffic generated by a BTS/Node B is transported to the corresponding BSC/RNC across a network, referred to as the backhaul network, which is often a hub-and-spoke topology with hundreds of BTSs/Node Bs connected to a given BSC/RNC by point-to-point time-division multiplexing (TDM) trunks. These TDM trunks may be leased line T1/E1s or their logical equivalents, such as microwave links or satellite channels. The interface between the BTS and BSC in GSM and Code

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-1

Introduction

Division Multiple Access (CDMA) systems is called the Abis interface. The interface between the Node B and RNC in a UMTS system is called the Iub interface (see for sample configurations.

RAN-Optimization Implementation

In RAN-Optimization (RAN-O), the Cisco 3825 router extends IP connectivity to the cell site and BTS. The router provides bandwidth-efficient IP transport of GSM and UMTS voice and data bearer traffic, as well as maintenance, control, and signaling traffic, over the leased line backhaul network between the BTS and leased line termination and aggregation node via compression (cRTP/cUDP) and packet multiplexing (Multilink PPP).

Figure 1-1 shows an example of the placement of and connections for the Cisco 3825 router in RAN-O.

Figure 1-1 Example of Cisco 3825 Router in a RAN-O

T1/E1

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Appendix B, “Configuration Examples”,

Active

GSM

BTS or

UMTS

Node-B

Cisco MWR pair

Standby

The BTS site consists of a pair of Cisco 3825 routers. The pair of routers provides an active router and a standby router for redundancy. A failure of the active router causes the standby router to take over as the active router for the BTS site.

Each pair of Cisco 3825 routers at the BTS site is identical in hardware configuration. The two routers connect to each other through the Gigabit Ethernet (GE) interfaces. The individual backhaul links to a Cisco

3825 router are cabled from a single T1/E1 termination block in the BTS, connecting to both the active and standby routers by means of a Y cable. The redundancy design to control the active/standby transitions of the router pair leverages Hot Standby Router Protocol (HSRP) to control the relays on the Cisco

2-port T1/E1-RAN interface card, Cisco product number VWIC-2T1/E1-RAN (for more information, see Cisco 2-port T1/E1-RAN Installation Instructions) in each router to ensure that the relays on the active router are closed while the relays on the standby router are open, thus avoiding double termination of the T1 (or E1).

Cisco Abis and Iub Optimization over IP Implementation

T1/E1 backhaul link to

IP RAN aggregation node

203231

1-2

One solution that mobile wireless operators find of value is Cisco’s ability to optimize RAN backhaul efficiency (see

Figure 1-2). For example, Cisco’s GSM Abis Optimization solution increases the T1/E1

bandwidth efficiency by as much as 50%. This means the current traffic loads can be carried using half as many T1/E1 trunks as are presently used. This allows more voice and data calls to be carried over the existing RAN backhaul network, eliminating the need for the operator to add expensive new T1/E1 trunks as traffic demands grow. It will also allow a number of existing trunks to be decommissioned, putting an end to their recurring costs.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Another equally important benefit is that substantial excess capacity is now available in the existing RAN backhaul network. The operator can reallocate this recovered bandwidth to carry traffic from other radios, such as UMTS Node Bs, GPRS, EDGE, 1xEV-DO, PWLANs, and other data overlays. This capability reduces the deployment and operating costs for new technologies, since the operator avoids the up-front and recurring costs of supplementing backhaul capacity. It also accelerates time to revenue from deployments of new radio technologies since there is no need for the operator to wait for additional microwave licenses or leased lines to be supplied.

Compliance with 3GPP2 and 3GPP R5 and R6 transport standards is another appealing aspect of Cisco’s RAN-O solution. Cisco converts today’s CDMA transport networks into 3GPP2-compliant IP RAN transport networks, and GSM and R4/R99 UMTS transport networks into R5/R6 IP RAN transport networks now—and adds multi-radio backhaul compression as well. This means operators can enjoy the benefits of IP transport in their CDMA, GSM, and R4/R99 UMTS RANs today.

Figure 1-2 Example of Cisco 3825 Router in a GSM Abis and UMTS Iub Optimization over IP

Introduction

GSM BTS

PWLAN

WCDMA-TDD

WiMAX

(802.16/20)

UMTS Node B

100Base-T

(R4/R99)

HSDPA

IP-PBX BSC

TDM

AT M

RNC

IP-PBX

Cisco

Mobile

Exchange

Internet

Edge

TDM

Cisco MWR

Optimized Abis/lub over IP

AT M

UMTS Node B

(RS/R6)

Cell Site Access Network BSC/RNC Site Mobile

T1/E1

Mobile IP/FA VoIP Content Caching Multi VPN IP Multicasting QoS PPP DHCP Routing

Cisco

ONS 15454

203232

Cisco GSM Abis Optimization over IP

The Cisco GSM Abis Optimization over IP technology improves T1/E1 bandwidth efficiency by 33% to 50%, corresponding to a GSM voice call capacity gain of 50-100% per T1/E1, depending on the nature of the traffic on the interface.

In a GSM RAN, the interface between the BTS and BSC is a 3GPP reference interface called the Abis interface. The physical trunk connecting a BTS and BSC is typically a T1 or E1 circuit, and carries 24 (T1) or 32 (E1) separate 64 kbps DS0 channels. One or two of these DS0 channels is used to carry control and signaling traffic, while the remainder are used to carry bearer traffic—voice and data from mobile

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-3

Introduction

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

users. Each DS0 bearer channel carries up to four sub-multiplexed 16 kbps channels, termed sub-rate DS0s. The voice and data bearer traffic is carried over the sub-rate DS0s in Transcoder and Rate Adaptor Unit (TRAU) frames in accordance with 3GPP TS 08.60 v8.2.1, “In-band control of transcoders and rate adaptors for Enhanced Full Rate (EFR) and full rate traffic channels.” There are several types of TRAU frames: full-rate (FR) or enhanced full-rate (EFR) GSM vocoder frames; Adaptive Multi-Rate (AMR) vocoder frames; silent speech frames; and OAM frames. When a sub-rate DS0 is assigned to a call, TRAU frames are generated in accordance with 3GPP TS 08.60 v8.2.1, “In-band control of transcoders and rate adaptors for EFR and full rate traffic channels.” When a sub-rate DS0 is idle, that is, not assigned to a call, a repeating idle pattern is transmitted in accordance with 3GPP TS 08.54 v8.0.1, “Base Station Controller-Base Transceiver Station (BSC-BTS) interface; Layer 1 structure of physical circuits.”

The transcoder and rate adaptation control function that specifies the TRAU frames provides several opportunities to optimize the Abis interface, and thus optimize the backhaul bandwidth efficiency. For example, when Discontinuous Transmission (DTX) is employed over the air interface, the TRAU frames that are transported on the Abis interface contain standardized redundant bit patterns, known as idle (silent) speech frames (FR and EFR) or “no data” frames (AMR), whenever a voice user is silent (typically 40-60% of the time). As another example, bearer channels that are not assigned to calls each carry known idle bit patterns on the Abis interface as mentioned previously. Thus, even though no radio transmissions are made during silent and idle periods, redundant information is nevertheless transported across the backhaul network thereby unnecessarily consuming precious bandwidth.

Cisco Pseudowire Emulation Edge-to-Edge (PWE3)

PWE3 is a mechanism that emulates the essential attributes of a service, such as ATM or EI/T1 (see

Figure 1-3). The required functions of pseudowires (PWs) include encapsulating service-specific Packet

Data Units (PDUs) arriving at an ingress port and carrying them across a path or tunnel, managing their timing and order, and any other operations required to emulate the behavior and characteristics of the service as efficiently as possible.

PW is perceived as an unshared link or circuit of the chosen service. However, there may be deficiencies that impede some applications from being carried on a PW. These limitations should be fully described in the appropriate service-specific documents and applicability statements.

Cisco supports standards-based PWE3 as defined by:

• Structure-agnostic TDM over Packet (SAToP), page 1-16

• Structure-aware TDM CESoPSN, page 1-16

• Transportation of ATM Service via MPLS/IP (PWE3/ATM), page 1-17

• Transportation of ATM Service via L2TPv3, page 1-20

A PW is a connection between two provider edge (PE) devices, which connects two attachment circuits (ACs). An AC can be an ATM virtual path identifier/virtual channel identifier (VPI/VCI) or an T1/E1 link.

1-4

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Figure 1-3 Example of Cisco 3825 Router in a PWE3f

ATM/TDM ATM/TDMxconnectxconnect

Introduction

MPLS/IP or L2TPv3

Pseudowire

Cisco Iub Optimization over IP

The Cisco Iub Optimization over IP technology for R4/R99 (ATM) UMTS RANs improves bandwidth efficiency by as much as 15 to 40%, corresponding to a UMTS voice call capacity gain of 18 to 67%, depending on the type of Iub header and ATM Adaptation Layer traffic sub-cell multiplexing performance. For R5/R6 IP UMTS RANs, Cisco provides compression and low-overhead encryption.

Intelligent Cell Site IP Services

Cisco’s RAN-O solutions also open up the possibility to deliver new profit-enhancing services. This is achieved through the rich set of IP networking features supported in Cisco IOS Software that are now extended to the cell site (see

Cell Site Points-of-Presence (POPs)

Since many cell sites are located in and around downtown areas, hotels, airports, and convention centers, they make attractive sites for co-locating public wireless LAN (PWLAN) access points and other wireless data overlays. Many of these wireless data radios are IP-based. IP networking features, like Mobile IP, VoIP, IP Multicast, Virtual Private Network (VPN), and content caching, enable delivery of new revenue-generating services over these radios. Cisco also provides a wide range of low-latency IP-based quality of service (QoS) and traffic shaping models to allow flexible mixing of multiple traffic types across the same backhaul network. Thus, the cell site becomes a physical point of presence or POP from which to offer hotspot services, or voice and wired Internet service provider (ISP) services to nearby enterprises and residences. The corresponding traffic “rides for free” on the spare backhaul bandwidth made available by Cisco’s Abis and Iub Optimization solutions.

Emulated Circuit

201865

Figure 1-4 on page 1-6).

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-5

Cisco IOS Software Features

GSM/GPRS/

Figure 1-4 Example of Cisco 3825 Router in a Cell Site POP

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

EDGE BTS

UMTS Node B

(R4/R99)

BSC

TDM

Cisco MWR

Optimized Abis and lub over IP

ATM (AAL2/AAL5)

Cell Site Access Network BSC/RNC Site Mobile

T1/E1

Cisco

ONS 15454

TDM

ATM

RNC

Internet

Edge

203233

Cisco IOS Software Features

There is one version of software available for the Cisco 3825 router. This version of the software is required for implementing the Cisco

3825 router in a Radio Access Network-Optimization (RAN-O)

configuration.

Software features for the RAN-O Implementation

The software required for implementing the Cisco 3825 router consists the Cisco IOS software running on the MIPs-based portion of the Cisco

Cisco IOS software functions added to the Cisco 3825 router for the RAN-O implementation include:

• Redundancy logic—For monitoring Hot Standby Router Protocol (HSRP) information to determine

the active and standby router and control T1 termination.

• Failover logic—To force a switchover for hardware failures or an over-temperature condition.

• Relay control—To open and close the T1/E1 interfaces on the active and standby routers.

• Diagnostic functions—To monitor the “health” of the standby Cisco 3825 router.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-6

3825 router hardware.

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Software Features

Standard Cisco IOS software features supported in the Cisco 3825 router for the RAN-O implementation include:

Simple Services

• DHCP

• PPP

• NAT

• OSPF

• RIP

Intelligent Services

• QoS

• VPN

• IP Multicast

• Mobile IP/FA

Cisco IOS Software Features

• content caching

• MPLS

• L2TPv3

Other Services

• ACFC and PFC Handling During PPP Negotiation

• HSRP

• NTP

• SNMP

Redundancy Support

In a RAN-O application, to ensure availability, the backhaul links to a Cisco 3825 router are redundantly cabled to the Cisco 2-port T1/E1-RAN card. This card, designed specifically for the Cisco These relays allow “Y” cabling for router redundancy where the T1/E1 link is not redundant and default to open. The relays are controlled by HSRP/redundancy protocol between the two routers connected to the same T1/E1.

Note If you choose to use the Cisco 3825 router in a non-redundant configuration, you must close the relays

on the card using the standalone subcommand. Also, redundancy parameters are processed when the router is booted up. These parameters cannot be changed “on the fly.”

MWR 1941-DC-A router and Cisco 3825 router includes relays that activate the T1/E1 ports.

HSRP

OL-15667-03

Cisco’s HSRP is used to control which router is active and which is standby. HSRP uses a priority scheme to determine which HSRP-configured router is to be the default active router. Priority is determined first by the configured priority value, then by the IP address. In each case, a higher value is of greater priority.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-7

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Cisco IOS Software Features

Configuration Statements for CISCO-IP-RAN-BACKHAUL-MIB

This section contains detailed information on how to enable notifications provided by the CISCO-IP-RAN-BACKHAUL-MIB.

With Cisco IOS Release 12.4(16)MR1, the Cisco 3825 router supports the following MIB:

CISCO-IP-RAN-BACKHAUL-MIB

This MIB is compatible with Cisco Mobile Wireless Transport Manager (MWTM) 5.0 or later. It provides information on the optimization on the optimization of the following traffic types:

• GSM—providing information between a BTS and the corresponding BSC

• UMTS—providing information on optimization between a Node Band the corresponding RNC.

NOTIFICATIONS

ciscoIpRanBackHaulGsmAlarm

Provides information alarms associated with Global System for Mobile Communications (GSM)-Abis interfaces. Only enables GSM Abis. See

RAN-O Command Reference” for more information.

conf t

snmp-server enable traps ipran alarm-gsm

Appendix A, “Cisco 3825 Mobile Wireless Edge Router

ciscoIpRanBackHaulUmtsAlarm

Provides information alarms associated with Universal Mobile Telecommunications System (UMTS)-Iub interfaces. Only enables UMTS Iub. See

Appendix A, “Cisco 3825 Mobile Wireless Edge

Router RAN-O Command Reference” for more information.

conf t

snmp-server enable traps ipran alarm-umts

ciscoIpRanBackHaulRcvdUtil + ciscoIpRanBackHaulSentUtil

Provides information on backhaul utilization. Only enables backhaul utilization. See Appendix A,

“Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference” for more information.

conf t

snmp-server enable traps ipran util

Note The snmp-server enable traps ipran util command is obsolete. CLI accepts the command to maintain

compatibility.

To specify all notifications, specify the component name. See Appendix A, “Cisco 3825 Mobile

Wireless Edge Router RAN-O Command Reference” for more information.

conf t

snmp-server enable traps ipran

The following configuration statements are used to provide additional information about device and control generation of notifications:

ipran-mib ?

backhaul-notify-interval Interval for backhaul utilization (Obsolete.

Provided only to maintain compatibility.)

location Location of device

snmp-access Specify type snmp connectivity

1-8

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

ipran-mib ?

threshold-acceptable Acceptable utilization threshold (Obsolete.

threshold-overloaded Overloaded utilization threshold (Obsolete.

threshold-warning Warning utilization threshold (Obsolete. Provided

ipran-mib backhaul-notify-interval

For more information on these commands, see Appendix A, “Cisco 3825 Mobile Wireless Edge Router

RAN-O Command Reference”.

Cisco IOS Software Features

Provided only to maintain compatibility.)

only to maintain compatibility.)

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-9

MIB Support

The Cisco 3825 router supports the following MIBs:

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

• ADSL-DMT-LINE-MIB

• ADSL-LINE MIB

• ATM-MIB

• BRIDGE-MIB

• CISCO-AAA-SERVER-MIB

• CISCO-AAL5-MIB

• CISCO-ACCESS-ENVMON-MIB

• CISCO-ATM-EXT-MIB

• CISCO-ATM-PVCTRAP-EXTN-MIB

• CISCO-BULK-FILE-MIB

• CISCO-CALL-APPLICATION-MIB

• CISCO-CALL-HISTORY-MIB

• CISCO-CAR-MIB

• CISCO-CAS-IF-MIB

• CISCO-CCME-MIB

• CISCO-CDP-MIB

• CISCO-CIRECUIT-INTERFACE-MIB

• CISCO-CLASS-BASED-QOS-MIB

• CISCO-CONFIG-MAN-MIB

• CISCO-IETF-ATM2-PVCTRAP-MIB-EXTN

• CISCO-IETF-ATM2-PVCTRAP-MIB

• CISCO-IETF-NAT-MIB

• CISCO-IETF-PW-MIB

• CISCO-IETF-PW-MPLS-MIB

• CISCO-IETF-PW-TC-MIB

• CISCO-IF-EXTENSION-MIB

• CISCO-IMAGE-MIB

• CISCO-IP-RAN-BACKHAUL-MIB

• CISCO-IPMROUTE-MIB

• CISCO-MEMORY-POOL-MIB

• CISCO-MVPN-MIB

• CISCO-NBAR-PROTOCOL-DISCOVERY-MIB

• CISCO-NETFLOW-MIB

• CISCO-NTP-MIB

• CISCO-PIM-MIB

• CISCO-PING-MIB

• CISCO-POP-MGMT-MIB

• CISCO-PPPOE-MIB

1-10

• CISCO-DIAL-CONTROL-MIB

• CISCO-DSL-CPE-MIB

• CISCO-ENTITY-ASSET-MIB

• CISCO-ENTITY-EXT-MIB

• CISCO-ENTITY-VENDORTYPE-OLD-MIB

• CISCO-ENVMON-MIB

• CISCO-FLASH-MIB

• CISCO-FRAME-RELAY-MIB

• CISCO-FTP-CLIENT-MIB

• CISCO-HSRP-MIB

• CISCO-ICSUDSU-MIB

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

• CISCO-PROCESS-MIB

• CISCO-QUEUE-MIB

• CISCO-RTTMON-MIB

• CISCO-SAA-APM-MIB

• CISCO-SMI

• CISCO-SNAPSHOT-MIB

• CISCO-SNMP--TARGET-EXT-MIB

• CISCO-SRST-MIB

• CISCO-STACKMAKER-MIB

• CISCO-SYSLOG-MIB

• CISCO-TC

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Limitations and Restrictions

• CISCO-TCP-MIB

• CISCO-VLAN-IFTABLE-RELATIONSHIP-

MIB

• CISCO-VLAN-MEMBERSHIP-MIB

• CISCO-VOICE-ANALOG-IF-MIB

• CISCO-VOICE-ATM-DIAL-CONTROL-MIB

• CISCO-VOICE-COMMON-DIAL-CONTROL-

MIB

• CISCO-VOICE-DIAL-CONTROL-MIB

• CISCO-VOICE-DNIS-MIB

• CISCO-VOICE-ENABLED-LINK-MIB

• CISCO-VOICE-FR-DIAL-CONTROL-MIB

• CISCO-VOICE-IF-MIB

• CISCO-VOICE-NUMBER-EXPANSION-MIB

• CISCO-VOICE-URI-CLASS-MIB

• CISCO-VPDN-MGMT-EXT-MIB

• CISCO-VPDN-MGMT-MIB

• CISCO-VTP-MIB

• DIAL-CONTROL-MIB

• DS1-MIB

• DS3-MIB

• ETHERLIKE-MIB

• EVENT-MIB

• EXPRESSION-MIB

• IF-MIB

• IGMP-MIB

• IMA-MIB

• INT-SERV-GUARANTEED-MIB

• INT-SERV-MIB

• IP-FORWARD-MIB

• ISDN-MIB

• MSDP-MIB

• OLD-CISCO-CHASSIS-MIB

• OLD-CISCO-FLASH-MIB

• OLD-CISCO-INTERFACES-MIB

• OLD-CISCO-IP-MIB

• OLD-CISCO-SYS-MIB

• OLD-CISCO-TCP-MIB

• OLD-CISCO-TS-MIB

• OSPF-MIB

• OSPF-TRAP-MIB

• PIM-MIB

• RFC1213-MIB

• RFC1231-MIB

• RFC1315-MIB

• RFC1406-MIB

• RMON-MIB

• RS-232-MIB

• RSVP-MIB

• SMON-MIB

• SNMP-TARGET-MIB

• SONET-MIB

• TCP-MIB

• UDP-MIB

• VRRP-MIB

• XGCP-MIB

Limitations and Restrictions

The following restrictions applies when using the Cisco 2-port T1/E1-RAN interface card in the Cisco

3825 router:

Caution The Cisco 3825 router does not support online insertion and removal (OIR) of the

Cisco

2-port T1/E1-RAN interface card. Any attempt to perform OIR on a card in a powered up router

might cause damage to the card.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-11

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Limitations and Restrictions

Caution The Cisco 3825 router does not support OIR of network modules. Any attempt to perform OIR on a card

in a powered up router might cause damage to the card.

Note The Cisco NM-2W network interface module only is only supported on the Cisco 3825 router on

shorthaul with or without Inverse Multiplexing over ATM (IMA). It is not supported on the Cisco router on shorthaul with GSM.

RAN-O Implementation Limitations and Restrictions

The following list of restrictions applies when implementing the Cisco 3825 router in a Radio Access Network-Optimization (RAN-O) configuration.

Hardware not Supported on the Cisco 3825 Router

Use of additional voice/WAN interface card (VWIC) cards. The only supported VWIC is the Cisco 2-port T1/E1-RAN.

3825

UMTS Iub and GSM Abis Implementation Limitations and Restrictions

The following list of restrictions applies when implementing the UMTS Iub or GSM Abis application in a RAN-O configuration.

Hardware not Supported for UMTS Iub

The Cisco MWR 1941-DC router does not support UMTS Iub as it does not include the Advanced Integration Module (AIM) slot connector on the motherboard. Only the Cisco and Cisco

3825 router are supported for UMTS Iub.

Hardware not Supported for GSM Abis

The Network Interface Module (NM-2W) does not support GSM Abis as the HDLC Controller channel does not interface with the NM-2W. GSM Abis is only supported through the Cisco 2-port T1/E1-RAN card through the four voice/WAN interface card (VWIC) ports on the Cisco

on page 1-13).

MWR 1941-DC-A router

3825 router (see Figure 1-5

1-12

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

New Features in Cisco IOS Release 12.4(16)MR2

Figure 1-5 Example of Cisco 3825 Router VWIC and NM-2W Configuration Options Block Diagram

GSM

• VWIC-2T1/E1-RAN used for T1/E1

• *MUST* reside in one of four WIC slots to traverse HDLC Ctrl (8 GSM E1 max)

NM - 2W

RAN WIC RAN WIC

UMTS

lub

AIM-ATM-8

Module on

Motherboard

RAN WIC RAN WIC RAN WICRAN WICRAN WICRAN WIC

UMTS

lub

NM - 2W

UMTS

• VWIC-2T1/E1-RAN used for T1/E1

• VWIC FPGA unused for UMTS

• Direct routing to AIM-ATM

UMTS

lub

UMTS

lub

• VWIC-2T1/E1-RAN used for T1/E1

• VWIC FPGA unused for IP

• Direct routing to IOS CPU

IOS CPU

HDLC Ctrl

280206

GSM Abis

New Features in Cisco IOS Release 12.4(16)MR2

With Cisco IOS Release 12.4(16)MR2, the Cisco MWR 1941-DC-A router supports the following feature:

• Keyword ignore-vpi-vci Added to xconnect Command, page 1-13

Keyword ignore-vpi-vci Added to xconnect Command

With the ignore-vpi-vci keyword configured, the MWR ignores the VPI/VCI value in the PW packet and does a blind rewrite with the local configured AC-side PVC's VPI/VCI value. This applies only when the xconnect command is configured under the PVC, which is the N:1 with N=1 special case. It does not apply when the xconnect command is configured under the subinterface, which supports N>1.

The xconnect command with keyword ignore-vpi-vci results in the PVC mapping being done in a cooperative way if the MWR works the same way as the receiving router. Without this command, the MWR checks the VPI/VCI value inside PW packet for matches against the local configured PVC or PVC-mapping. With the ignore-vpi-vci keyword configured, the MWR ignores the VPI/VCI header inside the received PW packet and does a blind rewrite with the local configured AC-side PVC's VPI/VCI value.

New Features in Cisco IOS Release 12.4(16)MR1

OL-15667-03

With Cisco IOS Release 12.4(16)MR1, the Cisco 3825 router supports the following:

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-13

New Features in Cisco IOS Release 12.4(16)MR1

• Emulation of TDM Circuit via MPLS/IP (PWE3/TDM), page 1-14

–

Structure-agnostic TDM over Packet (SAToP), page 1-16

–

Structure-aware TDM CESoPSN, page 1-16

• Transportation of ATM Service via MPLS/IP (PWE3/ATM), page 1-17

–

Transparent Cell Transport Service/ATM Port Mode, page 1-17

–

ATM N-to-One VCC Cell Mode, page 1-17

–

ATM AAL5 CPCS-SDU Mode, page 1-18

–

ATM One-to-One VCC Cell Mode, page 1-18

• Transportation of ATM Service via L2TPv3, page 1-20

–

ATM Port Cell Relay Service, page 1-20

–

ATM VCC Cell Relay Service, page 1-20

–

ATM AAL5-SDU Mode, page 1-21

• Asymmetric PWE3, page 1-22

• Ethernet over MPLS, page 1-23

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

–

VLAN Mode, page 1-23

–

Port Mode, page 1-23

• PWE3 over MLPPP, page 1-24

• PWE3 Redundancy, page 1-24

–

TDM PWE3 Redundancy, page 1-25

–

ATM PWE3 Redundancy, page 1-25

–

Ethernet PWE3 Redundancy, page 1-25

• Maximum Number of Supported ATM Ports, page 1-26

• ATM Cell Switching, page 1-26

Emulation of TDM Circuit via MPLS/IP (PWE3/TDM)

PWE3 is a mechanism that emulates the essential attributes of a T1/E1 line over a packet-switched network (PSN). This evolutionary technology allows you to migrate all packet networks from legacy TDM networks, yet provides transport for legacy applications. PWE3/TDM emulates T1/E1 unstructured and structured lines, including NxDS0 circuits over a Multiprotocol Label Switching (MPLS) infrastructure.

Configuration for provisioning and creating the PW is done through the existing xconnect interface.

A new command cem-group has been added to this feature to create a circuit emulation (CEM) channel from one or more time slots of T1/E1.

The group-number keyword identifies the group number used for this channel.

1-14

• For T1 controller, the range is 0-23. (24 cem-groups id)

• For E1 controller, the range is 0-30. (30 cem-groups id)

Use the unframed keyword to specify that a single CEM channel is being created, including all time slots with no framing structure defined. If time slots are defined, the PWE3 circuit is circuit emulation service over packet-switched network (CESoPSN).

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Use the time slots keyword and the timeslot-range argument to specify the time slots to be included in the CEM channel. The list of time slots may include commas and hyphens with no spaces between the numbers, commas, and hyphens.

The following example illustrates the use of the cem-group command:

SATOP

controller el 0/0/0 cem-group 0 unframed

int cem 0/0/0 cem 0 xconnect 10.10.10.10 200 encap mpls

CESoPSN

controller e1 0/0/1 cem-group 0 timeslots 1-31

int cem 0/0/1 cem 0 xconnect 10.10.10.10 200 encap mpls

New Features in Cisco IOS Release 12.4(16)MR1

A new command sample-rate has been added to this feature to specify in milliseconds the rate that hardware samples data on the attached circuit.

The default is 1 ms. The sample-rate command translates into the payload-size that is sent over the circuit.

• 32-time slots at 1 ms = 256-bytes (32-time slots * 8-bytes/timeslot/ms)

• 24-time slots at 2 ms = 384-bytes (24-time slots * 16-bytes/timeslot/ms)

• 10-time slots at 1 ms = 80-bytes (10-time slots * 8-bytes/timeslot/ms)

The following example illustrates the use of the sample-rate command:

interface CEM0/0/0 no ip address cem 0 sample-rate 2 xconnect 10.10.10.10 200 encapsulation mpls

A new command dejitter-buffer has been added to this feature to specify the size of the dejitter-buffer used to compensate for the network jitter.

• Use the size argument to specify the size of the buffer in milliseconds.

• Size can vary from 4 - 500 ms; default is 4 ms.

The following example illustrates the use of the dejitter-buffer command:

interface CEM0/0/0 no ip address cem 0

dejitter-buffer 10

xconnect 10.10.10.10 200 encapsulation mpls

OL-15667-03

A new command idle-pattern has been added to this feature to specify the data pattern transmitted on the T1/E1 when missing packets are detected on the PWE3 circuit.

The default idle-pattern command is 0xFF.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-15

New Features in Cisco IOS Release 12.4(16)MR1

The following example illustrates the use of the idle-pattern command:

interface CEM0/0/0 no ip address

cem 0 idle-pattern 0x55 xconnect 10.10.10.10 200 encapsulation mpls

A new command shutdown has been added to this feature to administratively shut down the CEM channel.

Default: cem channel is created in a “no shut” state.

The following example illustrates the use of the shutdown command:

interface CEM0/0/0

no ip address

cem 0 shutdown xconnect 10.10.10.10 200 encapsulation mpls

A new command class cem has been added to this feature to allow CEM interface parameters to be configured in a class and applied to CEM interfaces together. This command works in the same manner for CEM interfaces as the pseudowire-class command does for xconnect.

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

The following example illustrates the use of the class cem command:

class cem mycemclass

dejitter-buffer 10

sample-rate 2

interface CEM0/0/0

no ip address

cem 0 xconnect 10.10.10.10 200 encapsulation mpls cem class mycemclass

Structure-agnostic TDM over Packet (SAToP)

SAToP encapsulates TDM bit-streams (T1, E1, T3, E3) as PWs over PSNs. It disregards any structure that may be imposed on streams, in particular the structure imposed by the standard TDM framing.

The protocol used for emulation of these services does not depend on the method in which attachment circuits are delivered to the PEs. For example, a T1 attachment circuit is treated in the same way regardless of whether it is delivered to the PE on copper, multiplexed in a T3 circuit, mapped into a virtual tributary of a SONET/SDH circuit, or carried over an ATM network using unstructured ATM circuit emulation service (CES) [ATM-CES]. Termination of any specific “carrier layers” used between the PE and CEM is performed by an appropriate network service provider (NSP).

Structure-aware TDM CESoPSN

1-16

CESoPSN encapsulates structured (NxDS0) TDM signals as PWs over PSNs. It complements similar work for structure-agnostic emulation of TDM bit-streams, such as PWE3-SAToP.

Emulation of NxDS0 circuits saves PSN bandwidth and supports DS0-level grooming and distributed cross-connect applications. It also enhances resilience of CE devices to the effects of loss of packets in the PSN.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

New Features in Cisco IOS Release 12.4(16)MR1

Transportation of ATM Service via MPLS/IP (PWE3/ATM)

An ATM PW is used to carry ATM cells over an MPLS network. It is an evolutionary technology that allows you to migrate all packet networks from legacy ATM networks, yet provides transport for legacy applications.

Configuration for provisioning and creating the PW is done through the existing xconnect command.

The following PW modes are supported in this release:

• Transparent Cell Transport Service/ATM Port Mode, page 1-17

• ATM N-to-One VCC Cell Mode, page 1-17

• ATM AAL5 CPCS-SDU Mode, page 1-18

• ATM VCC Cell Relay Service, page 1-20

The following examples illustrates how different modes of PWs are configured.

Transparent Cell Transport Service/ATM Port Mode

ATM port mode maps the entire ATM interface to a PW. Use the xconnnect command under the interface mode to configure a port mode PW.

A sample configuration is written as follows:

interface ATM0/0/0 no ip address scrambling-payload atm mcpt-timers 1000 2000 3000 no atm ilmi-keepalive atm cell-packing 28 mcpt-timer 3 xconnect 99.99.99.99 100 encapsulation mpls sequencing both pvc 1/35 l2transport encapsulation aal0 ! pvc 1/36 l2transport encapsulation aal0 ! pvc 1/37 l2transport encapsulation aal0 !

ATM N-to-One VCC Cell Mode

ATM N:1 VCC cell relay mode maps one or more permanent virtual circuits (PVCs) to one PW. There are two ways to configure N:1 VCC in cell relay mode:

1. When only one PVC needs to be mapped to a PW, configure the xconnect command under the PVC

mode to configure a N:1 VCC cell relay mode PW.

A sample configuration is written as follows:

interface ATM0/0/1 no ip address load-interval 30 scrambling-payload atm mcpt-timers 1000 2000 3000 no atm ilmi-keepalive pvc 0/101 l2transport encapsulation aal0 cell-packing 28 mcpt-timer 3

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-17

New Features in Cisco IOS Release 12.4(16)MR1

xconnect 99.99.99.99 1101 encapsulation mpls sequencing both

2. When more than one PVC needs to be mapped to a PW, configure the xconnect command under the

subinterface mode to configure N:1 VCC cell in relay mode PW. All PVCs configured under this

subinterface are mapped to the PW.

A sample configuration is written as follows:

interface ATM0/0/1.1 multipoint

no snmp trap link-status

atm cell-packing 28 mcpt-timer 3

xconnect 99.99.99.99 1200 encapsulation mpls sequencing both

pvc 1/35 l2transport

encapsulation aal0

pvc 1/36 l2transport

encapsulation aal0

pvc 1/37 l2transport

encapsulation aal0

ATM AAL5 CPCS-SDU Mode

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

ATM adaptation layer 5 (AAL5) SDU mode maps one AAL5 type PVC to a PW. Use the xconnect command under an AAL5 encapsulation type PVC to configure AAL5 SDU mode PW.

A sample configuration is written as follows:

interface ATM0/0/1

no ip address

load-interval 30

scrambling-payload

no atm ilmi-keepalive

pvc 0/100 l2transport

encapsulation aal5

xconnect 99.99.99.99 1100 encapsulation mpls sequencing both

ATM One-to-One VCC Cell Mode

ATM 1:1 VCC cell relay mode maps one PVC to a PW. Use a one-to-one keyword in the xconnect command mode to specify a 1:1 VCC relay mode PW.

A sample configuration is written as follows:

interface ATM0/0/1

no ip address

load-interval 30

scrambling-payload

atm mcpt-timers 1000 2000 3000

no atm ilmi-keepalive

pvc 0/102 l2transport

encapsulation aal0

cell-packing 28 mcpt-timer 3

xconnect 99.99.99.99 1102 encapsulation mpls sequencing both one-to-one

1-18

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Cell Packing

Cell packing or concatenation supports Port, N:1 VCC cell, or 1:1 VCC cell mode. Cell packing can be configured with a parameter of a maximum number of cells and a parameter of cell packing timer.

“atm mcpt-timers [timer1] [timer2] [timer3]” can be used under the interface mode to configure three cell packing timer values. Timer values are in microseconds, and the granularity is 1,000 microseconds, namely 1 millisecond. The timer value is referenced by the “atm cell-packing …” and “cell-packing …” commands.

The sample below configures cell packing for ATM port modes. It specifies a maximum number of cells as 28 and a cell packing timer as 3,000 microseconds.

New Features in Cisco IOS Release 12.4(16)MR1

PVC Mapping

The sample below configures cell packing for the N:1 VCC cell relay mode PW. It specifies a maximum number of cells as 20 and a cell packing timer as 4,000 microseconds.

interface ATM0/0/1 no ip address load-interval 30 scrambling-payload atm mcpt-timers 2000 3000 4000 no atm ilmi-keepalive pvc 0/101 l2transport encapsulation aal0 cell-packing 20 mcpt-timer 3 xconnect 99.99.99.99 1101 encapsulation mpls sequencing both

The pw-pvc command configures PVC mapping or rewrites for PW-configured PVCs. It specifies the PW-side vpi/vci value used in sending and receiving PW packets for specified PVCs.

The following example illustrates the use of the pw-pvc command:

pvc 0/40 l2transport encapsulation aal0 pw-pvc 1/40 xconnect 1.1.1.1 40 encapsulation mpls

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-19

New Features in Cisco IOS Release 12.4(16)MR1

Transportation of ATM Service via L2TPv3

This service transports ATM services over IP networks. It allows you to migrate all PSNs from ATM legacy networks while still providing ATM legacy services.

The following PW modes are supported in this release:

• ATM Port Cell Relay Service, page 1-20

• ATM VCC Cell Relay Service, page 1-20

• ATM AAL5-SDU Mode, page 1-21

Configuring Layer 2 Tunnel Protocol version 3 (L2TPv3)-based PWs is very similar to configuring MPLS-based PWs, except that a pseudowire-class command is required to be configured for L2TPv3-based PWs.

A sample configuration of the L2TPv3 pseudowire-class command is written as follows:

pseudowire-class l2tp

encapsulation l2tpv3

sequencing both

ip local interface Loopback0

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

ATM Port Cell Relay Service

ATM port mode maps the entire ATM interface to a PW. Use the xconnnect command under the interface mode to configure a port mode PW. The ATM interface maps to the PW.

A sample configuration is written as follows:

interface ATM0/0/0

no ip address

scrambling-payload

atm mcpt-timers 1000 2000 3000

no atm ilmi-keepalive

atm cell-packing 28 mcpt-timer 3

xconnect 99.99.99.99 100 pw-class l2tp

pvc 1/35 l2transport

encapsulation aal0

pvc 1/36 l2transport

encapsulation aal0

pvc 1/37 l2transport

encapsulation aal0

ATM VCC Cell Relay Service

ATM N:1 VCC cell relay mode maps one or more PVCs to one PW. There are two ways to configure N:1 VCC in cell relay mode:

1. When only one PVC needs to be mapped to the PW, configure the xconnect command under the

PVC mode to configure a N:1 VCC cell relay mode PW.

1-20

A sample configuration is written as follows:

interface ATM0/0/1

no ip address

load-interval 30

scrambling-payload

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

atm mcpt-timers 1000 2000 3000 no atm ilmi-keepalive pvc 0/101 l2transport encapsulation aal0 cell-packing 28 mcpt-timer 3 xconnect 99.99.99.99 1101 pw-class l2tp !

2. When more than one PVC needs to be mapped to a PW, configure the xconnect command under the

subinterface mode to configure a N:1 VCC cell relay mode PW. All PVCs configured under this subinterface are mapped to the PW.

A sample configuration is written as follows:

interface ATM0/0/1.1 multipoint no snmp trap link-status atm cell-packing 28 mcpt-timer 3 xconnect 99.99.99.99 1200 pw-class l2tp pvc 1/35 l2transport encapsulation aal0 pw-pvc 2/135 ! pvc 1/36 l2transport encapsulation aal0 pw-pvc 2/136 ! pvc 1/37 l2transport encapsulation aal0 pw-pvc 2/137 ! !

New Features in Cisco IOS Release 12.4(16)MR1

ATM AAL5-SDU Mode

ATM AAL5-SDU mode maps one AAL5 type PVC to a PW. Use the xconnect command under an AAL5 encapsulation type PVC to configure a AAL5-SDU mode PW.

A sample configuration is written as follows:

Cell Packing

Cell packing or concatenation supports Port, N:1 VCC cell, or 1:1 VCC cell mode. Cell packing can be configured with a parameter of a maximum number of cells and a parameter of cell packing timer.

interface ATM0/0/1 no ip address load-interval 30 scrambling-payload atm mcpt-timers 1000 2000 3000 no atm ilmi-keepalive pvc 0/100 l2transport encapsulation aal5 xconnect 99.99.99.99 1100 pw-class l2tp !

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-21

New Features in Cisco IOS Release 12.4(16)MR1

The sample below configures cell packing for ATM port modes. It specifies a max number of cells as 28 and a cell packing timer as 3,000 microseconds.

interface ATM0/0/0

no ip address

scrambling-payload

atm mcpt-timers 1000 2000 3000

no atm ilmi-keepalive

atm cell-packing 28 mcpt-timer 3

xconnect 99.99.99.99 100 pw-class l2tp

pvc 1/35 l2transport

encapsulation aal0

pvc 1/36 l2transport

encapsulation aal0

pvc 1/37 l2transport

encapsulation aal0

The sample below configures cell packing for the N:1 VCC cell relay mode. It specifies a maximum number of cells as 20 and a cell packing timer as 4,000 microseconds.

interface ATM0/0/1

no ip address

load-interval 30

scrambling-payload

atm mcpt-timers 2000 3000 4000

no atm ilmi-keepalive

pvc 0/101 l2transport

encapsulation aal0

cell-packing 20 mcpt-timer 3

xconnect 99.99.99.99 1101 pw-class l2tp

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

PVC Mapping

The pw-pvc command configures PVC mapping or rewrites for PW-configured PVCs. It specifies the PW-side vpi/vci value used in sending and receiving specific PVCs.

The following example illustrates the use of PW packets for the pw-pvc command:

pvc 0/40 l2transport

encapsulation aal0

pw-pvc 1/40

xconnect 1.1.1.1 40 pw-class l2tp

Asymmetric PWE3

This feature uses two different MPLS enabled IP routes in uplink and downlink directions for creating an asymmetric backhaul path between two Mobile Wireless Routers (MWRs) acting as provider edge (PE) routers.

For ATM over L2TPV3, this feature uses two different IP routes in uplink and downlink directions for creating an asymmetric backhaul path between two MWRs acting as end points for an L2TPV3 tunnel.

No special configuration is needed for this feature apart from configuring the IP routes and having multiple backhaul paths available between two MWRs.

For a configuration example, see the “Asymmetric PWE3 Configuration” section on page B-2 in Appendix B.

1-22

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Ethernet over MPLS

The Ethernet over MPLS feature allows you to transport Ethernet traffic over MPLS networks. This feature can be configured in the following two ways:

VLAN Mode

A VLAN is a switched network that is logically segmented by functions, project teams, or applications regardless of the physical location of users.

To connect two VLAN networks in different locations, configure the PE routers at each end of the MPLS backbone and add a point-to-point virtual connection (VC). Only two PE routers at the ingress and egress points of the MPLS backbone have dedicated VCs to transport Layer 2 VLAN traffic.

Ethernet over MPLS in VLAN mode transports Ethernet traffic from a source 802.1Q VLAN to a destination 802.1Q VLAN over a core MPLS network.

The following example configures Ethernet in VLAN mode:

Router> enable Router# configure terminal Router(config)# interface gigabitethernet 0/0.1 Router(config-subif)# encapsulation dot1q 100 Router(config-subif)# xconnect 10.0.0.1 123 encapsulation mpls

New Features in Cisco IOS Release 12.4(16)MR1

Port Mode

Note Ethernet over MPLS in VLAN mode must be configured on subinterfaces.

Port mode allows a frame coming into an interface to be packed into an MPLS packet and transported over the MPLS backbone to an egress interface. The entire Ethernet frame without the preamble or a frame check sequence (FCS) is transported as a single packet.

To configure in port mode, use the xconnect command in the interface configuration mode and specify the destination address and the VC ID. The syntax of the xconnect command is the same for all other transport types. Each interface is associated with one unique PW VC label.

When configuring Ethernet over MPLS in port mode, use the following guidelines:

–

The pseudowire (PW) VC type is set to Ethernet.

–

Port mode and Ethernet VLAN mode are mutually exclusive. If you enable a main interface for port-to-port transport, you cannot also enter commands on a subinterface.

The command output in the following example shows two VCs for Ethernet over MPLS:

Router# show mpls l2transport vc Local intf Local circuit Dest address VC ID Status

------------- -------------------- --------------- ---------- ---------Fa0/0.1 Eth VLAN 2 10.1.1.1 2 UP Fa0/1 Ethernet 10.1.1.1 8 UP

OL-15667-03

VC 2 is in Ethernet VLAN mode. VC 8 is in Ethernet port mode.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-23

New Features in Cisco IOS Release 12.4(16)MR1

If you issue the show mpls l2transport vc detail command, the output is similar to the following:

Router# show mpls l2transport vc detail

Local interface: Fa0/0.1 up, line protocol up, Eth VLAN 2 up

Destination address: 10.1.1.1, VC ID: 2, VC status: up

Local interface: Fa0/1 up, line protocol up, Ethernet up

Destination address: 10.1.1.1, VC ID: 8, VC status: up

PWE3 over MLPPP

PWE3 over MLPPP (Multi-Link Point-to-Point Protocol) enables PWE3 establishment over multilink backhaul. With this feature it is possible to use multilink as an MPLS or L2TPV3 (for ATM over L2TPv3) enabled backhaul between two MWRs acting as PE routers. This feature does not need any special configuration apart from enabling MPLS on MLPPP and using an MLPPP ip address for ip routing between two MWRs acting as PE routers.

Existing command MPLS IP has been added to this feature to enable MPLS forwarding of IPv4 packets along normally routed paths for a designated interface.

The following example illustrates that label switching is enabled on a designated Ethernet interface:

Router# configure terminal

Router(config)# interface multilink1

Router(config-if)# mpls ip

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

PWE3 Redundancy

The PWE3 Redundancy feature enables you to configure your network to detect a failure in the network and reroute the Layer 2 (L2) service to another endpoint that can continue to provide service. This feature provides the ability to recover from a failure of the PE router or the link between the PE and the CE router.

Existing command backup peer has been added to this feature to specify a redundant peer for a PW VC.

Existing command backup delay has been added to this feature to specify how long a backup PW VC should wait before resuming operation after the primary PW VC goes down.

Existing command xconnect logging redundancy has been added to this feature to enable system message log (syslog) reporting of the status of the xconnect redundancy group.

The following example enables syslog reporting of the status of the xconnect redundancy group and shows the messages that are generated during switchover events:

Router(config)# xconnect logging redundancy

Activating the Primary Member

00:01:07: %XCONNECT-5-REDUNDANCY: Activating primary member 10.55.55.2:1000

Activating the Backup Member:

00:01:05: %XCONNECT-5-REDUNDANCY: Activating secondary member 10.55.55.3:1001

1-24

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

TDM PWE3 Redundancy

The following examples illustrate the use of the backup peer command:

PW Redundancy Without PW Class

interface CEM0/0/0 no ip address cem 0 xconnect 2.2.2.2 100 encapsulation mpls backup peer 2.2.2.2 200 backup delay 20 20

PW Redundancy With PW Class

pseudowire-class pw_redundancy encapsulation mpls

interface CEM0/0/0

no ip address

cem 0

xconnect 2.2.2.2 100 encapsulation mpls

backup peer 2.2.2.2 200 pw-class pw_redundancy

backup delay 20 20

New Features in Cisco IOS Release 12.4(16)MR1

ATM PWE3 Redundancy

The following examples illustrate the use of the backup delay command:

PW Redundancy Without PW Class

interface ATM0/0/0

no ip address

xconnect 2.2.2.2 300 encapsulation mpls

backup peer 2.2.2.2 400

backup delay 20 20

PW Redundancy With PW Class

pseudowire-class pw_redundancy

encapsulation mpls

interface ATM0/0/0

no ip address

xconnect 2.2.2.2 300 encapsulation mpls

backup peer 2.2.2.2 400 pw-class pw_redundancy

backup delay 20 20

Ethernet PWE3 Redundancy

The following examples illustrate the use of the xconnect logging redundancy command:

PW Redundancy Without PW Class

interface GigabitEthernet 0/0

xconnect 2.2.2.2 500 encapsulation mpls

backup peer 2.2.2.2 600

backup delay 20 20

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-25

New Features in Cisco IOS Release 12.4(16)MR1

PW Redundancy With PW Class

pseudowire-class pw_redundancy encapsulation mpls

interface GigabitEthernet 0/0 xconnect 2.2.2.2 500 encapsulation mpls backup peer 2.2.2.2 600 pw-class pw_redundancy backup delay 20 20

Maximum Number of Supported ATM Ports

This enhancement increases the maximum number of supported ATM ports on the Cisco 3825 router.

The maximum number of ATM ports supported on the AIM-ATM-8 depends on the slot in which the AIM-ATM-8 is installed:

• AIM-ATM-8 installed in slot 0—maximum of 12 ATM ports supported

• AIM-ATM-8 installed in slot 1—maximum of 8 ATM ports supported

The ATM-AIM module still supports a maximum of 4 ATM ports.

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

ATM Cell Switching

This feature provides PVC-to-PVC cell switching on the Cisco 3825 router.

The feature includes PVC remapping within either an AIM-ATM module or AIM-ATM-8 module. Also, the feature is available for PVC-to-PVC switching between ATM interfaces and/or ATM IMA groups. Note that PVC values must be above the well-known virtual path identifier/virtual channel identifier (VPI/VCI) range (0/32).

The following configuration snippet shows a connection from ATM0/0/0 to ATM0/0/1. The PVC is mapped from 0/32 to 0/33 and vice versa.

controller E1 0/0/0 mode atm aim 1 ! controller E1 0/0/1 mode atm aim 1 ! interface ATM0/0/0 pvc 0/32 12transport ! interface ATM0/0/1 pvc 0/33 12transport ! connection NAME a0/0 0/32 a0/1 0/33

1-26

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

New Features in Cisco IOS Release 12.4(16)MR

Privileged EXEC commands of interest include:

Router# show connection ?

all

elements

name

port

All Connections

Show Connection Elements

ID Number

Connection Name

Port Number

New Features in Cisco IOS Release 12.4(16)MR

With Cisco IOS Release 12.4(16)MR, the Cisco 3825 router supports the following:

• GSMmux—Global System for Mobile Communication (GSM) Abis Optimization over IP,

page 1-27

• UMTSmux—Universal Mobile Telecommunication System (UMTS) Iub Optimization over IP,

page 1-27

• UMTS Congestion Management Control, page 1-28

• Inverse Multiplexing over ATM (IMA), page 1-29

• Permanent Virtual Circuit (PVC) Routing, page 1-30

• UMTS QoS, page 1-33

GSMmux—Global System for Mobile Communication (GSM) Abis Optimization over IP

The Cisco GSM Abis Optimization and Iub Optimization solutions can optimize the excess capacity that exists in the current RAN backhaul network. This eliminates the need to add new T1/E1 trunks to meet growing demand and can even allow a number of existing trunks to be decommissioned.

UMTSmux—Universal Mobile Telecommunication System (UMTS) Iub Optimization over IP

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-27

New Features in Cisco IOS Release 12.4(16)MR

UMTS Congestion Management Control

The purpose of Congestion management control is to protect the most important traffic when congestion happens. Typically signaling and voice traffic are configured as the highest priority in QoS, and usually you do not expect these two types of combined traffic to congest the backhaul. But, if it does happen, some traffic will be dropped. The QoS on the Cisco and voice traffic, which means the packets will drop randomly. Dropping signaling traffic could have much more severe results than voice traffic. If the RNC and Node B lose signaling communication, the Node B device could be reset. Signaling traffic needs to be passed through during this time. Congestion management control throttles any other traffic but the signaling traffic, thus leaving the backhaul resource for signaling traffic.

Typically, UMTS Congestion Management Control protects the most important PVC traffic (usually signalling pvc) during backhaul congestion. Each PVC can be configured with a congestion priority. There are nine congestion control priority levels, protected and priority 2- 9. The protected priority has the highest priority and priority 9 has the lowest priority.

When congestion happens, all other PVC traffic except protected PVC(s) traffic will be throttled to save the backhaul resource for the protected PVC traffic. If after a certain period (200 ms) and there is no congestion reported, a recovery mechanism is triggered. Recovery gradually includes back throttled PVC traffic in the order of their congestion control priority level (priority 2 being first and 9 being last). Recovery will unthrottle the traffic gradually every until all traffic is recovered or congestion happens again.

It is recommended that you configure UMTS QoS as your first line of defense when congestion happens so that the low priority/best effort traffic be dropped by the QoS during congestion. Congestion control will be triggered when combining priority traffic (signalling and voice) congested backhaul, and it will throttle relatively less important traffic (voice) to protect most important traffic (signaling) based on the congestion control priority configuration.

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

3825 router does not differentiate between signaling

With UMTS Congestion Management Control, you can configure the UMTS congestion based on priority. Two new commands (umts-iub congestion priority and umts-iub congestion-control) are added using the PVC Configuration mode and Interface Configuration mode, respectively (see

Appendix A, “Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference”).

interface ATM0/IMA0 no ip address atm bandwidth dynamic atm umts-iub no atm ilmi-keepalive pvc 2/1 qsaal umts-iub congestion priority protected ! pvc 2/2 encapsulation aal0 umts-iub congestion priority protected ! pvc 3/1 encapsulation aal0 umts-iub congestion priority 4 ! pvc 3/2 encapsulation aal0 umts-iub congestion priority 5 ! pvc 3/100 encapsulation aal2 ! umts-iub congestion-control umts-iub set dscp 8

1-28

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

umts-iub set peering dscp 8 umts-iub local 20.20.20.21 6666 umts-iub remote 20.20.20.20 6666

One new CLI Show command show umts congestion atm slot/port has been added to this feature and a new field has been added to the show umts-iub peering command (see

“Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference”).

The following example illustrates the use of show umts congestion atm.

Router# show umts congestion atm 0/ima0 UMTS-Iub(ATM0/IMA0): Congestion: ON Throttled ATM cells: 415801 Last congestion time: Mar 13 18:09:49.858 duration: 0h 0m 53s

The following example illustrates the use of show atm umts-iub peering command with the new Congestion Control status field. In this example, it shows it On.

Router# show umts-iub peering atm 0/ima0 UMTS-Iub(ATM0/IMA0): Peering Information UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Local (20.20.20.21:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Connect State: OPEN UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Redundancy State: ACTIVE UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Congestion Control: ON UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Alarm State: UMTS-Iub(ATM0/0 - ATM0/2): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/1 - ATM0/3): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Remote (20.20.20.20:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA1): Alarm State: UMTS-Iub(ATM0/0 - ATM0/2): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/1 - ATM0/3): RX(NO ALARM) TX(NO ALARM)

New Features in Cisco IOS Release 12.4(16)MR

Appendix A,

Inverse Multiplexing over ATM (IMA)

Inverse Multiplexing over ATM (IMA) interface as a shorthaul enables you to configure existing UMTS commands on IMA interfaces. No new commands are added for this new feature. Only previously existing Cisco IOS commands have been added for this feature (see the

Multiplexing over ATM (IMA)” section on page 4-37 and Appendix A, “Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference”).

When operating in the IMA environment, a sample ATM configuration is written as follows:

interface ATM0/0/0

no ip address

no atm ilmi-keepalive

ima-group 0

scrambling-payload

interface ATM0/0/1

no ip address

no atm ilmi-keepalive

ima-group 0

scrambling-payload

“Configuring Inverse

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-29

New Features in Cisco IOS Release 12.4(16)MR

interface ATM0/IMA0

no ip address atm bandwidth dynamic atm umts-iub no atm ilmi-keepalive pvc 2/1

encapsulation aal0 ! pvc 2/2

encapsulation aal0 !

umts-iub local 20.20.20.21 6666 umts-iub remote 20.20.20.20 6666

Note The above sample configuration has one IMA shorthaul with two member links (atm0/0/0 and atm

0/0/1).

The output for the show umts-iub peering command has also changed and will look like the following:

Router#show umts peer UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Peering Information UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Local (20.20.20.21:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Connect State: OPEN UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Redundancy State: ACTIVE UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Alarm State: UMTS-Iub(ATM0/0/0 - ATM0/0/0): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/0/1 - ATM0/0/1): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Remote (20.20.20.20:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Alarm State: UMTS-Iub(ATM0/0/0 - ATM0/0/0): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/0/1 - ATM0/0/1): RX(NO ALARM) TX(NO ALARM)

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Note In the previous output, the local shorthaul/interface name appears before the dash (–), and the remote

shorthaul/interface name appears after the dash (–).

Permanent Virtual Circuit (PVC) Routing

PVC Routing allows you to offload PVC traffic from a physical ATM shorthaul to an alternate backhaul. For each alternate backhaul, you will need to create a logical shorthaul by creating an ATM sub-interface. Traffic from the PVCs configured under this logical shorthaul will go through the corresponding alternate backhaul. Three new commands are added using the Sub-interface Configuration mode for this new feature: atm umts, umts local, and umts remote (see the

PVC Routing (HSDPA Offload)” section on page 4-41 and Appendix A, “Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference”).

A sample configuration is written as follows:

interface ATM0/IMA0 no ip address atm umts-iub no atm ilmi-keepalive pvc 2/1 encapsulation aal0 ! pvc 2/2

“Configuring

1-30

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

encapsulation aal0 ! umts-iub local 20.20.20.21 6666 umts-iub remote 20.20.20.20 6666

interface ATM0/IMA0.1 multipoint atm umts-iub pvc 1/200 encapsulation aal0 ! umts-iub local 192.168.10.2 umts-iub remote 192.168.10.1

In the above sample, traffic for PVC 1/200 will be off-loaded to the alternate backhaul (192.168.10.2 --

192.168.10.1). The new output of a show umts peer command will look like the following:

New Features in Cisco IOS Release 12.4(16)MR

UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Peering Information UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Local (192.168.10.2:6666) States: UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Connect State: OPEN UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Redundancy State: ACTIVE UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Version: 4 UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Remote (192.168.10.1:6666) States: UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Version: 4

Note In the previous output, the local shorthaul/interface name appears before the dash (–), and the remote

shorthaul/interface name appears after the dash (–).

Router#show umts pvc UMTS-Iub(ATM0/IMA0): PVC matching Peering state: OPEN Local PVCs: PVC(2/1): has MATCHING remote PVC. PVC(2/2): has MATCHING remote PVC.

Remote PVCs: PVC(2/1): has MATCHING local PVC. PVC(2/2): has MATCHING local PVC.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-31

New Features in Cisco IOS Release 12.4(16)MR

UMTS-Iub(ATM0/IMA0.1): PVC matching Peering state: OPEN Local PVCs: PVC(1/200): has MATCHING remote PVC.

Remote PVCs: PVC(1/200): has MATCHING local PVC.

Lisa#show umts packet UMTS-Iub(ATM0/IMA0): packets: rxUMTS_count ================ 468845 txUMTS_count ================ 276847 rxUMTS_bytes ================ 22504560 txUMTS_bytes ================ 13288656 rxBackhaul_packets ========== 58216 txBackhaul_packets ========== 88884 rxBackhaul_bytes ============ 14687104 txBackhaul_bytes ============ 24824360 Last cleared 00:50:39 UMTS-Iub(ATM0/IMA0.1): packets: rxUMTS_count ================ 126173 txUMTS_count ================ 126173 rxUMTS_bytes ================ 6056304 txUMTS_bytes ================ 6056304 rxBackhaul_packets ========== 28405 txBackhaul_packets ========== 28777 rxBackhaul_bytes ============ 6532571 txBackhaul_bytes ============ 7596968 Last cleared 00:08:08

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Behavior Changes

The following behavior changes will be apparent when using this PVC Routing feature.

1. When the no atm umts command is applied to a base ATM interface, the command will

un-configure the ATM UMTS mode for all the sub-interfaces under that ATM interface.

2. When the no atm umts command is applied to an ATM sub-interface, the command will

un-configure the ATM UMTS mode only for that sub-interface.

3. Alarms are carried over the primary backhaul only, while the primary peering will have the alarm

information. The following is a sample output:

UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Peering Information UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Local (20.20.20.21:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Connect State: OPEN UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Redundancy State: ACTIVE UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Alarm State: UMTS-Iub(ATM0/0/0 - ATM0/0/0): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/0/1 - ATM0/0/1): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Remote (20.20.20.20:6666) States: UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Version: 4 UMTS-Iub(ATM0/IMA0 - ATM0/IMA0): Alarm State: UMTS-Iub(ATM0/0/0 - ATM0/0/0): RX(NO ALARM) TX(NO ALARM) UMTS-Iub(ATM0/0/1 - ATM0/0/1): RX(NO ALARM) TX(NO ALARM)

1-32

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

Note In the previous output, the local shorthaul/interface name appears before the dash (–), and the remote

shorthaul/interface name appears after the dash (–).

4. An admin shutdown of the base ATM interface will shut down all the peering instances, including

the primary peering and all the sub-interface peering(s). (In other words, they will move to the CLOSED state).

5. An admin shutdown of an ATM sub-interface will shut down only the peering for that

sub-interface. (In other words, the admin shutdown of the ATM sub-interface will make the PVCs on that sub-interface inactive, but it won’t change the status of the PVCs on the other end of the shorthaul, Node B or RNC.)

6. When the primary backhaul goes down and the primary peering goes down, the primary peering will

start sending Alarm Indication Signals (AISs) on the shorthaul, and; therefore, bring down the shorthaul like before. So all shorthaul traffic will stop, including the PVC traffic off-loaded to the alternate backhaul(s). (In this situation, the sub-interface peering connection state will stay OPEN as long as the alternate backhaul doesn’t go down).

New Features in Cisco IOS Release 12.4(16)MR

UMTS QoS

7. When an alternate or sub-interface backhaul goes down, the sub-interface peering will go down, but

it won’t bring down the shorthaul or start any alarms on the T1/E1 link. So primary backhaul traffic won’t be affected. (In this case, the sub-interface’s state will not be changed since the sub-interface is only the logical interface and changing its state will not generate any notification to the Node B or RNC at the ATM level. If the Node B/RNC wants to be able to detect an alternate backhaul down situation, configure the OAM-CC on the PVCs that are off-loaded to the alternate/sub-interface backhaul).

8. Cannot configure the qsaal type PVC under the ATM sub-interface, which means the AAL5 type

traffic cannot be off-loaded to the alternate backhaul unless they are configured as the AAL0 type on the Cisco

3825 router.

Three new commands are added using the Interface Configuration mode for this new feature: umts-iub set dscp, umts-iub set peering dscp, and gsm-abis set dscp and one new ATM-VC Interface Configuration command: umts-iub set dscp (see the

“Configuring UMTS QoS” section on page 4-46

and Appendix A, “Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference”). These new commands allow you to perform the following:

• UMTS Shorthaul Interface

–

Set the default description value to tag the backhaul packet including peering and data generated from the shorthaul in a UMTS Iub configuration.

–

Set the description value in the UMTS Iub configuration such that it overwrites the default value defined previously. It is also used to tag the peering backhaul packet.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-33

New Features in Cisco IOS Release 12.4(16)MR

• PVC of a UMTS Shorthaul Interface

–

Set the description value in the UMTS Iub configuration such that it overwrites the default value defined previously. It is also used to tag the backhaul packet generated from traffic from the PVC.

• GSM Shorthaul Interface

–

Set the description value in such a way as to tag all the backhaul packets generated from the shorthaul in the GSM Abis interface.

A sample configuration is written as follows:

class-map match-any llq-class match ip dscp cs2 ! policy-map llq-policy class llq-class priority percent 99 class class-default bandwidth remaining percent 1 queue-limit 45 !

interface ATM0/0/0 no ip address atm umts-iub no atm ilmi-keepalive pvc 2/1 encapsulation aal0 umts-iub set dscp 16 ! pvc 2/2 encapsulation aal0 ! umts-iub set dscp 8 umts-iub set peering dscp 16 umts-iub local 20.20.20.21 6666 umts-iub remote 20.20.20.20 6666 !

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

1-34

interface ATM0/0/1 no ip address atm umts-iub no atm ilmi-keepalive pvc 2/1 encapsulation aal0 umts-iub set dscp 16 ! pvc 2/2 encapsulation aal0 ! umts-iub set dscp 8 umts-iub set peering dscp 16 umts-iub local 20.20.20.21 8888 umts-iub remote 20.20.20.20 8888

interface Multilink2 ip address 20.20.20.21 255.255.255.0 ip tcp header-compression ietf-format load-interval 30 no keepalive no cdp enable ppp pfc local request ppp pfc remote apply

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

ppp acfc local request ppp acfc remote apply ppp multilink ppp multilink interleave ppp multilink group 2 ppp multilink fragment delay 0 1 ppp multilink multiclass max-reserved-bandwidth 100 service-policy output llq-policy hold-queue 50 out ip rtp header-compression ietf-format

In the above sample, PVC 2/1 of ATM0/0/0 and ATM0/0/1 will go to the priority queue and PVC 2/2 of ATM0/0/0 and ATM0/0/1 will be considered the best effort traffic and will go to the Weighted Fair Queue.

Note Defining the dscp value under the PVC affects the way the ATM cells are bundled together as a backhaul.

The more dscp values that are defined, the more limitations on how the ATM cells can be bundled. This, as a result, could affect backhaul efficiency. We recommend that you define at most two different dscp values for each shorthaul. One for llq traffic, and the other for best effort traffic.

New Features in Cisco IOS Release 12.4(16)MR

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

1-35

New Features in Cisco IOS Release 12.4(16)MR

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router

1-36

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

CHA PTER

Cisco IOS Software Basics

This chapter describes what you need to know about the Cisco IOS software before you configure the router by using the CLI. This chapter includes the following topics:

• Getting Help, this page

• Understanding Command Modes, page 2-2

• Undoing a Command or Feature, page 2-3

• Saving Configuration Changes, page 2-3

• Where to Go Next, page 2-3

Understanding this information will save you time as you begin to use the CLI. If you have never used the Cisco

“First-Time Configuration.”

If you are already familiar with the Cisco IOS software, proceed to Chapter 3, “First-Time

Configuration”.

IOS software or if you need a refresher, read this chapter before you proceed to Chapter 3,

Getting Help

Use the question mark (?) and arrow keys to help you enter commands:

• For a list of available commands, enter a question mark:

• To complete a command, enter a few known characters followed by a question mark (with no space):

• For a list of command variables, enter the command followed by a space and a question mark:

• To redisplay a command that you previously entered, press the Up Arrow key. Continue to press the

OL-15667-03

Router> ?

Router> s?

Router> show ?

Up Arrow key to see more commands.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

2-1

Understanding Command Modes

The Cisco IOS user interface is used in various command modes. Each command mode permits you to configure different components on your router. The commands available at any given time depend on which command mode you are in. Entering a question mark (?) at a prompt displays a list of commands available for that command mode.

Ta b l e 2-1 Common Command Modes

Command Mode Access Method

User EXEC Log in.

Privileged EXEC From user EXEC mode,

enter the enable command.

Global configuration From the privileged

EXEC mode, enter the configure terminal command.

Interface configuration From the global

configuration mode, enter the interface type number command, such as interface 0/0/0.

Table 2-1 lists the most common command modes.

serial

Chapter 2 Cisco IOS Software Basics

Router Prompt Displayed

Router>

Router#

Router (config)#

Router (config-if)#

Exit Method

Use the logout command.

To exit to user EXEC mode, use the disable, exit, or logout command.

To exit to privileged EXEC mode, use the exit or end command, or press Ctrl-Z.

To exit to global configuration mode, use the exit command.

To exit directly to privileged EXEC mode, press Ctrl-Z.

Timesaver Each command mode restricts you to a subset of commands. If you have trouble entering a command,

check the prompt and enter the question mark (?) to see a list of available commands. You might be in the wrong command mode or be using an incorrect syntax.

In the following example, notice how the prompt changes after each command to indicate a new command mode:

Router> enable Password: Router# configure terminal Router (config)# interface serial 0/0/0 Router (config-if)# line 0 Router (config-line)# controller t1 0 Router (config-controller)# exit Router (config)# exit Router# %SYS-5-CONFIG_I: Configured from console by console

The last message is normal and does not indicate an error. Press Return to get the Router# prompt.

Note You can press Ctrl-Z in any mode to immediately return to enable mode (Router#), instead of entering

exit, which returns you to the previous mode.

2-2

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 2 Cisco IOS Software Basics

Undoing a Command or Feature

If you want to undo a command that you entered or if you want to disable a feature, enter the keyword no before most commands; for example, no ip routing.

Saving Configuration Changes

Yo u m u s t e n t e r t h e copy running-config startup-config command to save your configuration changes to NVRAM, so that the changes are not lost if there is a system reload or power outage. For example:

Router# copy running-config startup-config Building configuration...

It might take a few minutes to save the configuration to nonvolatile random-access memory (NVRAM). After the configuration has been saved, the following message appears:

[OK] Router#

Undoing a Command or Feature

Where to Go Next

Now that you know some Cisco IOS software basics, you can begin to configure the router by using the CLI.

Remember the following:

• You can use the question mark (?) and arrow keys to help you enter commands.

• Each command mode restricts you to a set of commands. If you have difficulty entering a command,

check the prompt and then enter the question mark (?) to see a list of available commands. You might be in the wrong command mode or be using the incorrect syntax.

• To disable a feature, enter the keyword no before the command; for example, no ip routing.

• You need to save your configuration changes to NVRAM so that the changes are not lost if there is

a system reload or power outage.

Proceed to Chapter 3, “First-Time Configuration,” for first time configuration. Otherwise, proceed to

Chapter 4, “Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line Interface,” to begin configuring the router.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

2-3

Where to Go Next

Chapter 2 Cisco IOS Software Basics

2-4

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

First-Time Configuration

This chapter contains information with which you should be familiar before you begin to configure your router for the first time, including information about understanding boot images, interface numbering, and what you should do before you turn on your router. This chapter also describes how to use the setup command facility to configure your Cisco

This chapter includes the following sections:

• Setup Command Facility, page 3-3

• Configuring Global Parameters, page 3-4

• Completing the Configuration, page 3-7

Understanding Boot Images

The first file on the compact flash device in slot0: must be the Cisco IOS software image that you want to use. If it is not, the Cisco

3825 router will not be able to boot.

CHA PTER

3825 Mobile Wireless Edge Router.

Understanding the Cisco 3825 Router Interface Numbering

Each network interface on a Cisco 3825 router is identified by a slot number, subslot number, and a port number.

Figure 3-1 on page 3-2 shows an example of interface numbering on a Cisco 3825 router:

• A Cisco 2-port T1/E1-RAN interface card in each of the four Cisco 2-port T1/E1-RAN slots (labeled

HWIC0, HWIC1, HWIC2, and HWIC3) [high-speed WIC]

• Two built-in Gigabit Ethernet (GE) interfaces (labeled GE 0/0 and GE 0/1)

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

3-1

Understanding the Cisco 3825 Router Interface Numbering

Figure 3-1 Cisco 3825 Router Slot and Port Numbers

Chapter 3 First-Time Configuration

Network module

(NME) slot 2

ESW

5 x

1 0

/ 1

0 0

/ 1

s e

17x

Network module

(NME) slot 1

Slot and Port Numbering

The Cisco 3825 router chassis contains the following LAN and WAN interface types:

• One Small Form Pulggable (SFP) port—industry standard Gigabit interface convertor

FastEthernet Ports

High-speed WIC

HWIC1

Removable

face plate

(HWIC) slots

HWIC2HWIC3 HWIC0

Console

port

Auxiliary

port

Gigabit Ethernet

(GIGE) ports

GE 0/0 GE 0/1

280205

Small Form Pluggable

(SFP) port

• Two built-in Gigabit Ethernet LAN interfaces (labeled GE 0/0 and GE 0/1)

• Four slots for installing Cisco 2-port T1/E1-RAN interface cards (labeled HWIC0, HWIC1,

HWIC2, and HWIC3)

• Two slots for installing NM-2W network modules (supports up to four additional

Cisco

2-port T1/E1-RAN interface cards)

Note A removable face plate allows for installation of a double-wide NMD network module into NME

slot 2.

The logical slot numbers are as follows:

• 0 for all built-in Cisco 2-port T1/E1-RAN interface card slots

• 1 for the lower network module slot

• 2 for the upper network module slot

The numbering format is:

For example:

Serial 0/0/0 (HWIC slot 0)

Serial 1/0/0 (NM slot 1)

3-2

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 3 First-Time Configuration

Interface (port) numbers begin at logical 0 for each interface type; ports are numbered from right to left.

• The two built-in Gigabit Ethernet 10/100/1000 logical interfaces are GE 0/0 and GE 0/1.

• The logical slot number for all Cisco 2-port T1/E1-RAN interfaces in the built-in

Cisco HWIC3 slot designations are for physical slot identification only.) Interfaces in the Cisco for each interface type, regardless of the physical slot in which the Cisco interface cards are installed.

For example, if you have a Cisco 2-port T1/E1-RAN interface card in two of the 2-port T1/E1-RAN interface card slots (physical slots HWIC0 and HWIC1), then the logical interfaces are:

–

However, if you install a Cisco 2-port T1/E1-RAN interface card in physical slot HWIC1 (leaving slot HWIC0 empty), the logical interfaces in slot HWIC1 are Serial 0/0/0 and Serial 0/0/1. If you later add a Cisco shift. The configuration that you created for logical interfaces Serial 0/0/0 and Serial 0/0/1 will now be applied to the Cisco a new configuration for the interfaces that you previously configured on HWIC1 (which will now be Serial 0/1/0 and Serial 0/1/1).

• The slot number of the Cisco 2-port T1/E1-RAN interfaces installed in slot 1 using an NM-2W

network module is always logical 1, and the interfaces are always numbered from the right to left.

Setup Command Facility

2-port T1/E1-RAN interface card slot is always 0. (The HWIC0, HWIC1, HWIC2, and

2-port T1/E1-RAN interface cards are numbered from right to left, starting with logical 0/0/0

2-port T1/E1-RAN

Serial 0/0/0 and Serial 0/0/1 in physical slot HWIC0

Serial 0/1/0 and Serial 0/1/1 in physical slot HWIC1

2-port T1/E1-RAN interface card to slot HWIC0, the interface numbering will

2-port T1/E1-RAN interface card in slot HWIC0, and you will need to create

Setup Command Facility

The setup command facility prompts you for information that is needed to start a router functioning quickly. The facility steps you through a basic configuration, including LAN interfaces.

If you prefer to configure the router manually or if you wish to configure a module or interface that is not included in the setup command facility, proceed to “ familiarize yourself with the command-line interface (CLI) and then proceed to Chapter 4, “Configuring

the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line Interface”

for instructions on configuring your Cisco 3825 router.

Before Starting Your Router

Before you power on your router and begin using the setup command facility, follow these steps:

Step 1 Set up the hardware and connect the console and network cables as described in the “Connecting Cables

to Cisco

Step 2 Configure your PC terminal emulation program for 9600 baud, 8 data bits, no parity, and 1 stop bit.

3800 Series Routers” section of the Cisco 3800 Series Hardware Installation guide.

Chapter 2, “Cisco IOS Software Basics” to

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

3-3

Configuring Global Parameters

Using the Setup Command Facility

The setup command facility is displayed in your PC terminal emulation program window.

To create a basic configuration for your router, do the following:

• Complete the steps in the “Configuring Global Parameters” section on page 3-4.

• Complete the steps in the “Completing the Configuration” section on page 3-7.

Note If you make a mistake while using the setup command facility, you can exit the facility and run it again.

Press Ctrl-C, and type setup at the enable mode prompt (1900#).

Configuring Global Parameters

Step 1 Power on the router.

Messages will begin to appear in your terminal emulation program window.

Chapter 3 First-Time Configuration

Caution Do not press any keys on the keyboard until the messages stop. Any keys that you press during this time

will be interpreted as the first command entered after the messages stop, which might cause the router to power off and start over. Wait a few minutes. The messages will stop automatically.

The messages look similar to the following:

Note The messages vary, depending on the Cisco IOS software image and interface modules in your

router. The screen displays in this section are for reference only and might not match the messages on your console.

rommon 1 >boot program load complete, entry point: 0x8000f000, size: 0xc0c0

Initializing ATA monitor library.......

program load complete, entry point: 0x80010000, size: 0x2888ab0 Self decompressing the image : ############################################################################ [OK]

Smart Init is enabled smart init is sizing iomem ID MEMORY_REQ TYPE 00042A 0X010D78F3 C3825 motherboard 0000D6 0X000D8A10 FE Port Module, 2 WAN 0000D6 0X000D8A10 FE Port Module, 2 WAN

0X00288860 Onboard PVDM2 SIMM

000587 0X0030FEF2 ATM AIM-8 with SAR only, no DSPs 000587 0X0030FEF2 ATM AIM-8 with SAR only, no DSPs

TOTAL: 0X02922B7F

0X000021B8 OnboardUSB

0X00660670 public buffer pools 0X0078F000 public particle pools

3-4

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 3 First-Time Configuration

If any of the above Memory requirements are “UNKNOWN”, you may be using an unsupported configuration or there is a software problem and system operation may be compromised. Rounded IOMEM up to: 42Mb. Using 8 percent iomem. [42Mb/512Mb]

Restricted Rights Legend

Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c) of the Commercial Computer Software - Restricted Rights clause at FAR sec. 52.227-19 and subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS sec. 252.227-7013.

cisco Systems, Inc. 170 West Tasman Drive San Jose, California 95134-1706

Cisco IOS Software, 3800 Software (C3825-IPRANK9-M), Version 12.4(16)MR1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jan-08 14:09 by prod_rel_team Image text-base: 0x600010930, data-base: 0x62C1F030

Configuring Global Parameters

This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptograhpic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at: http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to export@cisco.com.

Cisco 3825 (revision 1.0) with 481280K/43008K bytes of memory. Processor board ID FHK0902F51G 2 Gigabit Ethernet interfaces 16 Channelized (E1 or T1)/PRI ports 2 ATM/Voice AIMs DRAM configuration is 64 bits wide with parity disabled. 479K bytes of NVRAM. 125440K bytes of ATA System CompactFlash (Read/Write)

Step 2 When the following message appears, enter yes to begin the initial configuration dialog:

Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system

OL-15667-03

Would you like to enter basic management setup? [yes/no]:yes Configuring global parameters:

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

3-5

Configuring Global Parameters

Step 3 Enter a hostname for the router (this example uses 3825-1):

Configuring global parameters:

Enter host name [Router]: 3825-1

Step 4 Enter an enable secret password. This password is encrypted (more secure) and cannot be seen when

viewing the configuration:

The enable secret is a password used to protect access to privileged EXEC and configuration modes. This password, after entered, becomes encrypted in the configuration. Enter enable secret: ciscoenable

Note When you enter the enable secret password, it will be seen while you type the password. After entering

it, it becomes encrypted in the configuration.

Step 5 Enter an enable password that is different from the enable secret password. This password is not

encrypted (less secure) and can be seen when viewing the configuration:

The enable password is used when you do not specify an enable secret password, with some older software versions, and some boot images. Enter enable password: ciscoenable

Step 6 Enter the virtual terminal password, which prevents unauthenticated access to the router through ports

other than the console port:

The virtual terminal password is used to protect access to the router over a network interface. Enter virtual terminal password: ciscoterminal

Chapter 3 First-Time Configuration

Step 7 Respond to the following prompts as appropriate for your network:

Configure SNMP Network Management? [yes]: Community string [public]: public

Step 8 The summary of interfaces is displayed. This list varies, depending on what network modules, if any, are

installed in your router.

Current interface summary

Any interface listed with OK? value “NO” does not have a valid configuration

Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 unassigned NO unset up up GigabitEthernet0/1 unassigned NO unset up up

Step 9 Specify the interface to be used to connect to the network management system.

Enter interface name used to connect to the management network from the above interface summary: GigabitEthernet0/0

3-6

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 3 First-Time Configuration

Step 10 Configure the specified interface as prompted.

Configuring interface GigabitEthernet0/0:

Use the 100 Base-TX (RJ-45) connector? [yes]: yes Operate in full-duplex mode? [no]: yes Configure IP on this interface? [yes]:yes IP address for this interface: 178.18.44.233 Subnet mask for this interface [255.255.0.0] : 255.255.255.128 Class B network ia 178.18.0.0, 25 subnet bits; mask is /25

Completing the Configuration

When you have provided all the information prompted for by the setup command facility, the configuration appears. Messages will be displayed that are similar to the following:

The following configuration command script was created:

! hostname 3825-1 enable secret 5 $1$5fH0$Z6Pr5EgtR5iNJ2nBg3i6y1 enable password ciscoenable line vty 0 4 password ciscoenablesnmp-server community public ! no ip routing

Completing the Configuration

! interface GigabitEthernet0/0 no shutdown media-type 100BaseX full-duplex ip address 178.18.44.233 255.255.255.128 ! interface GigabitEthernet0/1 shutdown no ip address ! end

To complete your router configuration, do the following:

Step 1 A setup command facility prompt asks whether you want to save this configuration.

[0] Go to the IOS command prompt without saving this config. [1] Return back to the setup without saving this config. [2] Save this configuration to nvram and exit.

Enter your selection [2]: 2 Building configuration... [OK]

Use the enabled mode 'configure' command to modify this configuration.

Press RETURN to get started!

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

3-7

Completing the Configuration

If you answer no, the configuration information that you entered is not saved, and you return to the router enable prompt. Type setup to return to the System Configuration Dialog.

If you answer yes, the configuration is saved, and you return to the EXEC prompt.

Step 2 When the messages stop displaying on your screen, press Return to get the command line prompt.

The 3825-1> prompt indicates that you are now at the CLI and you have just completed a basic router configuration. However, this is not a complete configuration. You must configure additional parameters by using the Cisco IOS software CLI as described in

Wireless Edge Router in a RAN-O Solution with the Command-Line Interface.”

Chapter 3 First-Time Configuration

Chapter 4, “Configuring the Cisco 3825 Mobile

3-8

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

CHA PTER

Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line Interface

This chapter describes how to use the Cisco IOS software CLI to configure the Cisco 3825 Mobile Wireless Edge Router in a Radio Access Network-Optimization (RAN-O) solution and includes the following sections:

• Before You Begin, page 4-2

• Verifying the Version of Cisco IOS Software, page 4-2

• Clocking Requirements for Cisco 3825 Router, page 4-2

• Show Controller Command, page 4-5

• Configuration Sequence, page 4-6

• Configuring the Hostname and Password, page 4-6

• Configuring Gigabit Ethernet Interfaces, page 4-8

• Configuring the Backhaul Links, page 4-9

• Configuring GSM-Abis Links, page 4-20

• Configuring UMTS Links, page 4-24

• Configuring Redundancy, page 4-28

• Configuring for SNMP Support, page 4-33

• Configuring Inverse Multiplexing over ATM (IMA), page 4-37

• Configuring PVC Routing (HSDPA Offload), page 4-41

• Configuring UMTS QoS, page 4-46

• Configuring UMTS Congestion Management Control, page 4-55

• Configuring Satellite Support, page 4-58

• Configuring Graceful Degradation, page 4-59

• Saving Configuration Changes, page 4-61

• Example Configurations, page 4-61

• Monitoring and Managing the Cisco 3825 Router, page 4-69

• Where to Go Next, page 4-73

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-1

Before You Begin

For sample configurations, see Appendix B, “Configuration Examples”.

For additional configuration topics, see the Cisco IOS configuration guide and command reference publications. These publications are available on the Documentation DVD that came with your router, available online at Cisco.com, or as printed copies that you can order separately.

Note If you skipped Chapter 2, “Cisco IOS Software Basics,” and you have never configured a Cisco router,

return to Chapter 2 and read it now. The chapter contains important information that you need to successfully configure your router.

Before You Begin

Before you configure the Cisco 3825 router in a RAN-O solution, you should be aware of the following caveats:

• A Cisco IOS Release 12.4(16)MR1 or later, “c3825-iprank9-mz” image must be installed on the

Cisco

3825 router.

• If you are using the Cisco 3825 in a redundant configuration and are attaching the router to a device

that uses spanning tree, configure port first on the device to avoid problems with Hot Standby Router Protocol (HSRP) at start up.

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

• In case of competing equal priorities, HSRP uses the IP address to determine the active router.

Therefore, you should ensure that the order of the IP addresses of the T1/E1 interfaces on the active router corresponds to the order of the IP addresses of the T1/E1 interfaces on the standby router.

Verifying the Version of Cisco IOS Software

To implement the Cisco 3825 router in a RAN-O solution, Cisco IOS Release 12.4(16)MR or later must be installed on the router. To verify the version of Cisco

The show version command displays the configuration of the system hardware, the software version, the names and sources of the configuration files, and the boot images.

IOS software, use the show version command.

Clocking Requirements for Cisco 3825 Router

Network clocking is the means by which a clock signal is generated or derived and distributed through a network and its individual nodes for the purpose of ensuring synchronized network operation.

Network clocking is an important consideration in the RAN-O networks. A solid network clocking design is essential to the successful deployment of any RAN-O network. The purpose of this section is to describe the use of network clocking for RAN-O networks using the Cisco for an example of clocking using the Cisco 3825 router).

3825 router (see Figure 4-1

4-2

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Clocking Requirements for Cisco 3825 Router

Figure 4-1 Clocking Example

Clocking ----------------------------------------------->

BSC---z___MWR_A---z___MWR_B---z____BTS

The Base Station Controller (BSC) is responsible for providing the clock source into the network to which the connected devices must synchronize its transmit clocks.

The BSC provides the clock source to the Cisco 3825 router, which is distributed to the participating serial/ATM ports.

Clock-Related Commands

The following sections describe the uses of the clock-related commands:

• Network-Clock-Participate Command

• Network-Clock-Select Command

• Clock Source Command

Network-Clock-Participate Command

The network-clock-participate command allows the ports on a specified network module or voice/WAN interface card (VWIC) or high-speed WAN interface card to use the network clock for timing. For example:

mwr2(config)#network-clock-participate ?

92853

aim AIM Module slot Network Module Slot wic WIC Module

Use “

aim”

Use “

keyword to identify Advanced Integration Module

wic”

keyword to specify the voice/WAN interface card

Network-Clock-Select Command

The network-clock-select command names a source to provide timing for the network clock and to specify the selection priority for this clock source.

To ensure that the router uses the correct interface as the primary (highest priority) clock source, this command must be present to configure the clocking priority for the system. To establish the clocking hierarchy (in case the primary source goes down), the same command needs to be repeated with a different priority for each interface:

network-clock-select 1 e1 0/0/0

network-clock-select 2 e1 0/0/1

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-3

Clocking Requirements for Cisco 3825 Router

Clock Source Command

The clock source command configures the source for synchronization of the interface transmit clock.

Configure clock source line if the router is deriving its clock externally from the connected device.

Configure clock source internal if the router provides the master clock (for example, either the internal clock or the network clock).

The show network-clocks command allows verification of the clocking configuration.

mwr2#sh network-clocks Network Clock Configuration

-------------------------- Priority Clock Source Clock State Clock Type

1 E1 0/0/0 GOOD E1 10 Backplane GOOD PLL

Current Primary Clock Source

-------------------------- Priority Clock Source Clock State Clock Type

1 E1 0/0/0 GOOD E1

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

The previous output of show network-clocks corresponds to the following configuration (see Figure 4-2 for description of how the clocking is done):

no network-clock-participate slot 1 network-clock-participate wic 0 network-clock-participate wic 1 network-clock-participate wic 2 no network-clock-participate aim 0 no network-clock-participate aim 1 network-clock-select 1 E1 0/0/0

controller E1 0/0/0 clock source line channel-group 0 timeslots 1-31 speed 64

Figure 4-2 Clocking Example

Clocking ----------------------------------------------->

BSC---z___MWR_A---z___MWR_B---z____BTS

0/1/0 0/0/0 0/0/0 0/1/0

1. The BSC provides clock synchronization to the MWR_A router.

2. The MWR_A router receives clock from the BSC via port 0/1/0 and distributes to port 0/0/0.

92854

4-4

3. The MWR_B router receives clock from the MWR_A router via port 0/0/0 and distributes to port

0/1/0.

4. The Base Transceiver STATION (BTS) receives clock synchronization from the MWR_B router.

5. The clock synchronization from the BSC is propagated through the network to the BTS.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Example Configurations

The following examples show two sample configurations:

Configuration Sample #1

network-clock-participate wic 0 network-clock-participate wic 1 network-clock-select 1 E1 0/1/0

controller E1 0/0/0 clock source internal channel-group 0 timeslots 1-31 speed 64

controller E1 0/1/0 clock source line channel-group 0 timeslots 1-31 speed 64

Configuration Sample #2

network-clock-participate wic 0 network-clock-participate wic 1 network-clock-select 1 E1 0/0/0

Show Controller Command

controller E1 0/0/0 clock source line channel-group 0 timeslots 1-31 speed 64

controller E1 0/1/0 clock source internal channel-group 0 timeslots 1-31 speed 64

Show Controller Command

Use the show controller command to detect any clocking issues. For example, Slip Secs may indicate a clocking issue (see following example).

mwr1#sh contr e1 0/1/0 E1 0/2 is up. Applique type is Channelized E1 - balanced No alarms detected. alarm-trigger is not set Version info Firmware: 20050421, FPGA: 13, spm_count = 0 Daughter card FPGA version: 0x16, source: Bundled Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line. CRC Threshold is 320. Reported from firmware is 320. VWIC relays are closed Link noise monitor disabled Data in current interval (330 seconds elapsed): 0 Line Code Violations, 0 Path Code Violations 243 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

OL-15667-03

Note The last line of the previous example shows 243 Slip Secs indicating a possible clocking issue.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-5

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

The Summary of Steps section provides the recommended primary configuration sequence for the Cisco 3825 router in a RAN-O solution. These steps have configuration sub-steps or tasks within the primary steps or tasks.

Note The installation of the Cisco 3825 router and the Cisco 2-port T1/E1-RAN interface card should be

completed before attempting the configuration (see the more information).

The configuration sequence of the Cisco 3825 router for the RAN-O solution assumes that you will have already had some familiarity with the configuration of Cisco routers. It is also assumed that you are familiar with your own network configurations and that you are familiar with the CLI used in configuring Cisco routers.

Note For correct CLI syntax and format, see the “Cisco 3825 Mobile Wireless Edge Router RAN-O Command

Reference” section on page A-1.

“Related Documentation” section on page ix for

Summary of Steps

Perform the following tasks to configure the Cisco 3825 router in a RAN-O solution.

1. Configuring the Hostname and Password

2. Verifying the Hostname and Password, page 4-7

3. Configuring Gigabit Ethernet Interfaces, page 4-8

4. Enabling the GE Interface, page 4-9

5. Configuring the Backhaul Links, page 4-9

6. Configuring the PPP Backhaul Interfaces, page 4-19

7. Configuring GSM-Abis Links, page 4-20

8. Configuring UMTS Links, page 4-24

9. Configuring Redundancy, page 4-28

10. Configuring for SNMP Support, page 4-33

11. Saving Configuration Changes, page 4-61

Configuring the Hostname and Password

Two important configuration tasks that you might want to perform first are to configure the hostname and to set an encrypted password. Configuring a host name allows you to distinguish multiple Cisco routers from each other. Setting an encrypted password allows you to prevent unauthorized configuration changes.

4-6

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

To configure a hostname and to set an encrypted password, follow these steps:

Step 1 Enter enable mode.

Router> enable

The Password prompt appears. Enter your password.

Password: password

You have entered the enable mode when the prompt changes to Router#.

Step 2 Enter global configuration mode.

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

You have entered global configuration mode when the prompt changes to Router(config)#.

Router(config)#

Step 3 Change the name of the router to a meaningful name. Substitute your hostname for Router.

Router(config)#

hostname Router

Configuration Sequence

Router(config)#

Enter an enable secret password. This password provides access to the privileged EXEC mode. When you type enable at the EXEC prompt ( configuration mode. Enter your secret password.

Router(config)# enable secret

Step 4 Exit back to global configuration mode.

Router(config)# exit

secret password

Verifying the Hostname and Password

To verify that you have correctly configured the hostname and password, follow these steps

Step 1 Enter the show config command:

Router# show config Using 1888 out of 126968 bytes ! version XX.X . . . ! hostname Router ! enable secret 5 $1$60L4$X2JYOwoDc0.kqa1loO/w8/ . . .

Router>), you must enter the enable secret password to access the

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-7

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

Check the hostname and encrypted password, which are displayed near the top of the command output.

Step 2 Exit global configuration mode and attempt to reenter it, using the new enable password:

Router# exit . . . Router con0 is now available Press RETURN to get started. Router> enable Password: Router#

password

Configuring Gigabit Ethernet Interfaces

To configure the Gigabit Ethernet (GE) interface on the Cisco 3825 router, complete the following tasks:

• Configuring the GE Interface IP Address

• Setting the Speed and Duplex Mode, page 4-8

• Enabling the GE Interface, page 4-9

Configuring the GE Interface IP Address

Use the following instructions to perform a basic GE IP Address configuration: specifying the port adapter and aligning an IP address and subnet mask of the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To configure the GE interface, follow these steps, while in the global configuration mode:

Step 1 Specify the port adapter type and the location of the interface to be configured.

Router(config)# interface gigabitethernet

The slot represents the main fixed slots and is always 0 and the port is the number of the port (0 or 1).

Step 2 Assign an IP address and subnet mask to the interface.

Router(config-if)# ip address

slot/port

ip_address subnet_mask

Setting the Speed and Duplex Mode

The GE ports of the Cisco 3825 router can run in full- or half- duplex mode and at 1000 Mbps, 100 Mbps, or 10 Mbps. The Cisco speed and duplex mode with the corresponding interface at the other end of the connection.

Auto-negotiation is the default setting for the speed and transmission mode.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-8

3825 router has an auto-negotiation feature that allows the router to negotiate the

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

When configuring an interface speed and duplex mode, follow these guidelines:

• If both ends of the line support auto-negotiation, we highly recommend the default auto negotiation

settings.

• When auto-negotiation is turned on for either speed or duplex mode, it auto- negotiates both speed

and the duplex mode.

• If one interface supports auto-negotiation, and the interface at the other end does not, configure the

duplex mode and speed on both interfaces. If you use the auto-negotiation setting on the supported side, the duplex mode setting will be set at half-duplex.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To configure speed and duplex operation, follow these steps, while in the interface configuration mode:

Step 1 Specify the duplex operation.

Router(config-if)# duplex [auto | half | full]

Configuration Sequence

Step 2 Specify the speed.

Router(config-if)# speed [auto | 1000 | 100 | 10]

Enabling the GE Interface

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Once you have configured the GE interface, enable it, by following this step, while in the interface configuration mode:

Step 1 Enable the interface.

Router(config-if)# no shutdown

Configuring the Backhaul Links

OL-15667-03

To configure the backhaul links, complete the following tasks:

• Configuring the Card Type for the Cisco 2-port T1/E1-RAN, this page

• Configuring E1 Controllers, page 4-11

• Configuring T1 Controllers, page 4-12

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-9

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

• Configuring Network Clocking Support, page 4-14

• Configuring Multilink Backhaul Interface, page 4-15

• Configuring the PPP Backhaul Interfaces, page 4-19

Configuring the Card Type for the Cisco 2-port T1/E1-RAN

Use the following instructions to perform a basic Card Type configuration: enabling the router, enabling an interface, and specifying the card type. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To select and configure a card type for the Cisco 2-port T1/E1-RAN card, follow these steps:

Step 1 Enter the enable mode.

Router> enable

Step 2 Enter the password.

Password:

password

You have entered the enable mode when the prompt changes to Router#.

Step 3 Enter the global configuration mode.

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#

You have entered the global configuration mode when the prompt changes to Router(config)#.

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Step 4 Set the card type for the Cisco 2-port T1/E1-RAN card.

Router(config-if)# card type {e1 | t1}

slot subslot

Where:

• slot—Slot number of the interface.

• subslot—Specifies the VWIC/HWIC slot number.

4-10

For example, the following command configures the Cisco 2-port T1/E1-RAN card in the Cisco 3825 router slot 0, VWIC/HWIC slot 0 as an E1:

Router(config)# card type e1 0 0

When the command is used for the first time, the configuration takes effect immediately. A subsequent change in the card type will not take effect unless you enter the reload command or reboot the router.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Note When you are using the card type command to change the configuration of an installed card, you must

enter the no card type {e1 | t1} slot subslot command first. Then enter the card type {e1 | t1} slot subslot command for the new configuration information.

Configuring E1 Controllers

Use the following instructions to perform a basic E1 controller configuration: specifying the E1 controller, entering the clock source, specifying the channel-group, configuring the serial interface, configuring PPP encapsulation, and enabling keepalive packets. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Configuration Sequence

To configure the E1 controllers, follow these steps, while in the global configuration mode:

Step 1 Specify the controller that you want to configure. Controller E1 0/0/0 maps to the first port of the

Cisco

2-port T1/E1-RAN interface card in slot 0. Controller E1 0/0/1 maps to the second port of the

Cisco

2-port T1/E1-RAN interface card in slot 0.

Router(config)# controller e1

slot

/subslot/

port

For example, the following command specifies the E1 controller as the first port of the Cisco

2-port T1/E1-RAN interface card in slot 0:

Router(config)# controller e1 0/0/0

You have entered the controller configuration mode when the prompt changes to

Router(config-controller)#.

Step 2 Enter the clocking source.

Router(config-controller)# clock source {line [primary] | internal}

Where:

• line—Specifies the E1 line from which the clocking is taken.

• internal—Specifies internal clocking.

• primary—Primary clock source.

For example, the following command configures the clock source for the E1 controller:

Router(config-controller)# clock source line

OL-15667-03

Note When you are using the clock source {line [primary] | internal} command to change the

configuration of an installed card, you must enter the no clock source {line [primary] |internal} command first. Then enter the clock source {line {primary] | internal} command for

the new configuration information.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-11

Configuration Sequence

Step 3 Specify the channel-group and time slots to be mapped. Once you configure a channel-group, the serial

interface is automatically created.

Router(config-controller)# channel-group

Where:

• channel-no—ID number to identify the channel group. The valid range is 0 to 30.

• timeslot-list—Timeslots (DS0s) to include in this channel group. The valid timeslots are 1 to 31.

• speed {64}—The speed of the DS0: 64 kbps.

For example, the following command configures the channel-group and time slots for the E1 controller:

Router(config-controller)# channel-group 0 timeslots 1-31 speed 64

Note When you are using the channel-group channel-no timeslots timeslot-list {64} command to

Step 4 Exit the controller configuration mode.

Router(config-controller)# exit

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

channel-no

change the configuration of an installed card, you must enter the no channel-group channel-no timeslots timeslot-list speed {64} command first. Then enter the channel-groupchannel-no timeslots timeslot-list {64} command for the new configuration information.

timeslots

timeslot-list

speed {64}

Step 5 Configure the serial interface. Specify the E1 slot, subslot, port number, and channel-group.

Router(config)# interface serial Router(config-if)#

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Step 6 To configure PPP encapsulation, enter the following command:

Router(config-if)# encapsulation ppp

Step 7 Enable keepalive packets on the interface and specify the number of times keepalive packets will be sent

without a response before bringing down the interface:

Router(config-if)# keepalive [

Step 8 Return to Step 1 to configure the second port on the Cisco 2-port T1/E1-RAN interface card and the

ports on any additional Cisco 2-port T1/E1-RAN interface cards.

Step 9 Exit the interface configuration mode.

Router(config-if)# exit

Configuring T1 Controllers

slot

/subslot/

period [retries

port

]]

:channel

4-12

Use the following instructions to perform a basic T1 controller configuration: specifying the T1 controller, specifying the framing type, specifying the line code form, specifying the channel-group and time slots to be mapped, configuring the cable length, configuring the serial interface, configuring PPP

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

encapsulation, and enabling keepalive packets. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To configure the T1 interfaces, follow these steps, while in the global configuration mode:

Step 1 Specify the controller that you want to configure. Controller T1 0/0/0 maps to the first port of the

Cisco

2-port T1/E1-RAN interface card in slot 0. Controller T1 0/0/1 maps to the second port of the

Cisco

2-port T1/E1-RAN interface card in slot 0.

Router(config)# controller t1

Step 2 Specify the framing type.

Router(config-controller)# framing esf

Step 3 Specify the line code format.

Router(config-controller)# linecode b8zs

slot

/subslot/

port

Configuration Sequence

Step 4 Specify the channel-group and time slots to be mapped. Once you configure a channel-group, the serial

interface is automatically created.

Note The default speed of the channel-group is 56.

Router(config-controller)# channel-group 0 timeslots 1-24 speed 56

Step 5 Configure the cable length.

Router(config-controller)# cablelength

feet

Note Although you can specify a cable length from 0 to 450 feet, the hardware recognizes only two ranges: 0

to 49 feet and 50 to 450 feet. For example, entering 35 feet uses the 0 to 49 range. If you later change the cable length to 40 feet, there is no need for reconfiguration because 40 is within the 0 to 49 range. However, if you change the cable length to 50, the 50 to 450 range must be used. The actual number that you enter is stored in the configuration file.

Step 6 Exit controller configuration mode.

Router(config-controller)# exit

Step 7 Configure the serial interface. Specify the T1 slot (always 0), subslot, port number, and channel-group.

Router(config)# interface serial

slot/subslot/port

:channel

Step 8 Enter the following command to configure PPP encapsulation.

Router(config-if)# encapsulation ppp

Step 9 Enable keepalive packets on the interface and specify the number of times that keepalive packets will be

sent without a response the interface is brought down:

Router(config-if)# keepalive [

period [retries

]]

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-13

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

Step 10 Return to Step 1 to configure the second port on the Cisco 2-port T1/E1-RAN interface card and the

ports on any additional Cisco 2-port T1/E1-RAN interface cards.

Step 11 Exit to the global configuration mode.

Router(config-if)# exit

Configuring Network Clocking Support

To allow the ports on the Cisco 2-port T1/E1-RAN interface card to use the network clock for timing, use the network-clock-participate command in the global configuration mode. To restrict the device to use only its own clock signals, use the no form of this command.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To configure the Cisco 2-port T1/E1-RAN interface card, follow these steps, while in the global configuration mode:

Step 1 Continuing with configuration of the E1, configure the network clock timing by entering:

Router(config)# network-clock-participate [wic | aim | slot

wic-slot

]

Where:

• wic wic-slot—Configures the Cisco 2-port T1/E1-RAN interface card slot number on the

Cisco

3825 router. Valid values are 0 or 1.

• aim—Configures the Advanced Integration Module (AIM) for Asynchronous Transfer Mode (ATM)

(AIM-ATM or AIM-ATM-8) daughter card built-in on the motherboard of the Cisco

• slot—Configures the NM-2W network interface module in the network module slot located on the

Cisco

3825 router.

For example, the following command configures the Cisco 2-port T1/E1-RAN interface card to use the network clock on the 2-port T1/E1-RAN in the router chassis in slot 0:

Router(config)# network-clock-participate wic 0

Step 2 To name a source to provide timing for the network clock and to specify the selection priority for this

clock source, use the network-clock-select command in global configuration mode. To cancel the network clock selection, use the no form of this command.

Step 3 To specify the selection priority for the clock source, enter:

Router(config)# network-clock-select

priority

{e1}

slot

/subslot/

port

Where:

• priority—Selection priority for the clock source (1 is the highest priority). The clock with the

highest priority is selected to drive the system time-division multiplexing (TDM) clocks. When the higher-priority clock source fails, the next-higher-priority clock source is selected.

4-14

• e1—Specifies that the slot is configured as E1.

• slot—Slot number identifying the controller that is the clock source.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

• subslot—Subslot number identifying the controller that is the clock source.

• port—Port number identifying the controller that is the clock source.

For example, the following command specifies the clock source for E1, slot 0, subslot 0, port 0:

Router(config)# network-clock-select 1 e1 0/0/0

Configuring Multilink Backhaul Interface

A multilink interface is a special virtual interface that represents a multilink PPP bundle. The multilink interface coordinates the configuration of the bundled link, and presents a single object for the aggregate links. However, the individual PPP links that are aggregated must also be configured. Therefore, to enable multilink PPP on multiple serial interfaces, you first need to set up the multilink interface, and then configure each of the serial interfaces and add them to the same multilink interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Configuration Sequence

The Cisco 3825 router can support up to 16 E1 or T1 interfaces through the multilink interface.

Complete the following configuration tasks for a multilink backhaul interface.

• Creating a Multilink Bundle, this page

• Configuring PFC, page 4-16

• Configuring ACFC, page 4-17

• Enable Multilink and Identify the Multilink Interface, page 4-17

• Enable Real-Time Transport Protocol (RTP) Header-Compression, page 4-18

Creating a Multilink Bundle

To create a multilink bundle, follow these steps, while in the global configuration mode:

Step 1 Create a multilink bundle and enter the interface configuration mode:

Router(config)# interface multilink

Where group-number is the number of the multilink bundle.

For example, the following command creates a multilink bundle 5:

Router(config)# interface multilink5 Router(config-if)#

To remove a multilink bundle, use the no form of this command.

group-number

OL-15667-03

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-15

Configuration Sequence

Step 2 Assign an IP address to the multilink interface.

Router(config-if)# ip address

Where:

• address—The IP address.

• subnet mask—Network mask of IP address.

For example, the following command creates an IP address and subnet mask:

Router(config-if)# ip address 10.10.10.2 255.255.255.0

Handling PFC and ACFC

Use the following instructions to perform Protocol Field Compression (PFC) and Address and Control Field Compression (ACFC) handling during PPP negotiation to be configured. By default, PFC/ACFC handling is not enabled.

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

address [subnet mask]

Configuring PFC

Step 1 To configure how the router handles PFC in its outbound configuration requests, enter the following

Step 2 To configure how the router handles the PFC option in configuration requests received from a remote

Note The recommended PFC and ACFC handling in the Cisco 3825 router is: acfc local request, acfc remote

apply, pfc local request, and pfc remote apply.

To configure PFC handling during PPP negotiation, follow these steps, while in the interface configuration mode:

command:

Router(config-if)# ppp pfc local {request | forbid}

Where:

• request—The PFC option is included in outbound configuration requests.

• forbid—The PFC option is not sent in outbound configuration requests, and requests from a remote

peer to add the PFC option are not accepted.

For example, the following command creates how the router handles PFC:

Router(config-if)# ppp pfc local request

peer, enter the following command:

Router(config-if)# ppp pfc remote {apply | reject | ignore}

4-16

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Where:

• apply—PFC options are accepted and ACFC may be performed on frames sent to the remote peer.

• reject—PFC options are explicitly ignored.

• ignore—PFC options are accepted, but ACFC is not performed on frames sent to the remote peer.

For example, the following command allows PFC options to be accepted:

Router(config)# ppp pfc remote apply

Configuring ACFC

To configure ACFC handling during PPP negotiation, follow these steps, while in the interface configuration mode:

Step 1 To configure how the router handles ACFC in its outbound configuration requests, enter the following

command:

Router(config-if)# ppp acfc local {request | forbid}

Configuration Sequence

Where:

• request—The ACFC option is included in outbound configuration requests.

• forbid—The ACFC option is not sent in outbound configuration requests, and requests from a

remote peer to add the ACFC option are not accepted.

For example, the following command creates how the router handles ACFC:

Router(config-if)# ppp acfc local request

Step 2 To configure how the router handles the ACFC option in configuration requests received from a remote

peer, enter the following command:

Router(config-if)# ppp acfc remote {apply | reject | ignore}

Where:

• apply—ACFC options are accepted and ACFC may be performed on frames sent to the remote peer.

• reject—ACFC options are explicitly ignored.

• ignore—ACFC options are accepted, but ACFC is not performed on frames sent to the remote peer.

For example, the following command allows ACFC options to be accepted:

Router(config-if)# ppp acfc remote apply

Enable Multilink and Identify the Multilink Interface

OL-15667-03

To enable multilink and identify the multilink interface, follow these steps, while in the interface configuration mode:

Step 1 Enable multilink PPP operation.

Router(config-if)# ppp multilink

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-17

Configuration Sequence

Step 2 Specify an identification number for the multilink interface.

Router(config-if)# ppp multilink group

Where group-number is the multilink group number.

For example, the following command restricts (identifies) the multilink interface, 5, that can be negotiated:

Router(config-if)# ppp multilink group 5

Step 3 Enable keepalive packets on the interface and specify the number of times the keepalive packets will be

sent without a response before bringing down the interface.

Router(config-if)# keepalive [

Where:

• period—(Optional) Integer value in seconds greater than 0. The default is 10.

• retries—(Optional) Specifies the number of times that the device will continue to send keepalive

For example, the following command restricts (identifies) the multilink interface, 5, that can be negotiated:

Router(config-if)# keepalive 1 5

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

group-n

period [retries

packets without response before bringing the interface down. Integer value greater than 1 and less than 255. If omitted, the value that was previously set is used; if no value was specified previously, the default of 5 is used.

umber

]]

Enable Real-Time Transport Protocol (RTP) Header-Compression

To enable RTP Header Compression, follow these steps, while in the interface configuration mode:

Step 1 Enable RTP header-compression.

Router(config-if)# ip rtp header-compression [passive | iphc-format | ietf-format] [periodic-refresh]

Where:

• passive—(Optional) Compresses outgoing RTP packets only if incoming RTP packets on the same

interface are compressed. If you do not specify the passive keyword, all RTP packets are compressed. This option is not applicable on PPP links.

• iphc-format—(Optional) Indicates that the IP Header Compression (IPHC) format of header

compression will be used.

• ietf-format—(Optional) Indicates that the Internet Engineering Task Force (IETF) format of header

compression will be used.

• periodic-refresh—(Optional) Indicates that the compressed IP header will be refreshed

periodically.

For example, the following command enables RTP header-compression in the Internet IETF format by suppressing the IP ID in the RTP/UDP header compression:

Router(config-if)# ip rtp header-compression ietf-format ignore-id

4-18

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuring the PPP Backhaul Interfaces

Use the following instructions to perform a basic backhaul interface configuration: enabling an interface, configuring PPP encapsulation, enabling multilink PPP operation, and specifying an ID number for the multilink interface. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To continue the configuration of the backhaul links for the E1 controllers, follow these steps, while in the global configuration mode:

Step 1 Configure the serial interface. Specify the E1 slot, subslot, port number, and channel-group.

Router(config)# interface serial

Where:

• slot—Slot number of the interface.

slot

/subslot/

port

:channel-group

Configuration Sequence

• subslot—Subslot number of the interface.

• port—Port number of the interface.

• channel-group—ID number to identify the channel group.

For example, the following command identifies the serial interface located in slot 0, subslot 0, port 0, channel-group 0:

Router(config)# interface serial0/0/0:0 Router(config-if)#

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Step 2 Do not assign an IP address and subnet mask to the interface.

Router(config-if)# no ip address

Step 3 To configure PPP encapsulation, enter the following command:

Router(config-if)# encapsulation ppp

Step 4 Enable multilink PPP operation.

Router(config-if)# ppp multilink

Step 5 Specify an identification number for the multilink interface.

Router(config-if)# ppp multilink group

ip_address subnet_mask

group-n

umber

OL-15667-03

Where group-number is the multilink group number.

For example, the following command restricts (identifies) the multilink interface, 5, that can be negotiated:

Router(config-if)# ppp multilink group 5

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-19

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

Step 6 Enable keepalive packets on the interface and specify the number of times the keepalive packets will be

sent without a response before bringing down the interface.

Router(config-if)# keepalive [

period

]

Where period is an optional integer value in seconds greater than 0. The default is 10.

For example, the following command indicates the number of times the keepalive packets will be sent as 1:

Router(config-if)# keepalive 1

Extended Availability Drop and Insert (EADI)

EADI capabilities must be disabled on the Cisco 3825 router (using the disable-eadi global configuration command) to avoid a double-termination situation upon router reboot when the Cisco

3825 router is being used in a redundant configuration.

To disable EADI, follow these steps, while in the global configuration mode:

Step 1 Disable EADI.

Router(config)# disable eadi

Configuring GSM-Abis Links

Note The following is an example of configuring an E1 on the Cisco 2-port T1/E1-RAN interface card in a

Cisco 3825 router.

Use the following instructions to perform a basic Global System for Mobile Communications (GSM)-Abis configuration on the Cisco router, by entering the following Cisco IOS commands at the router prompt (see the

Cisco 3825 Router Interface Numbering” section on page 3-1 for information about slot and port

numbering on the Cisco 3825 router). You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

2-port T1/E1-RAN interface card located in the Cisco 3825

“Understanding the

4-20

To configure the GSM-Abis attributes, follow these steps while in the global configuration mode:

Step 1 Set the card type for the Cisco 2-port T1/E1-RAN interface card.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Note This configuration assumes that the Cisco 2-port T1/E1-RAN interface card is installed in all

three Cisco and HWIC3) of the Cisco 3825 router.

2-port T1/E1-RAN interface card slots (physical slots HWIC0, HWIC1, HWIC2,

Configuration Sequence

Router(config)# card type {e1 | t1}

slot subslot

Where:

• e1—Card type E1.

• t1—Cart type T1.

• slot—Slot number of the interface.

• subslot—Specifies the Cisco 2-port T1/E1-RAN interface card (serial slot) port number.

For example, there is no Cisco 2-port T1/E1-RAN interface card located in the Cisco 3825 router serial slot 0 (physical slot HWIC0). So, the interface card is located in physical slot HWIC1. As a result, the following command configures the Cisco router serial slot 0 (physical slot HWIC1), first port of the Cisco

2-port T1/E1-RAN interface card located in the Cisco 3825

2-port T1/E1-RAN interface card as a

E1:

Router(config)# card type e1 0 1

Step 2 Specify the controller that you want to configure by entering the controller configuration mode.

Controller E1 0/0/0 maps to the first port of the Cisco Cisco

3825 router serial slot 0 (physical slot HWIC0). Controller E1 0/0/1 maps to the second port of

the Cisco

2-port T1/E1-RAN interface card located in the Cisco 3825 router serial slot 0 (physical slot

2-port T1/E1-RAN interface card located in the

HWIC0).

Note If you install a Cisco 2-port T1/E1-RAN interface card in the Cisco 3825 router in physical slot

HWIC1 (leaving physical slot HWIC0 empty), the logical interfaces in physical slot HWIC1 become Serial 0/0/0 and Serial 0/0/1. If you later add a Cisco

2-port T1/E1-RAN interface card to physical slot HWIC0, the interface numbering shifts. The configuration that you created for logical interfaces Serial 0/0/0 and Serial 0/0/1 will now be applied to the Cisco

2-port T1/E1-RAN interface card in physical slot HWIC0, and you will need to create a new configuration for the logical interfaces that you previously configured on HWIC1 (which will now be Serial 0/1/0 and Serial 0/1/1). For more information about interface numbering, see

Understanding the Cisco 3825 Router Interface Numbering, page 3-1.

Router(config)# controller e1

slot

/subslot/

port

Where:

• slot—Number of the serial slot the 2-port T1/E1-RAN card is located in the Cisco 3825 router.

• subslot—Number of the serial subslot the 2-port T1/E1-RAN card is located in the Cisco 3825

router.

• port—Number of the serial port the 2-Port T1/E1-RAN card is using.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-21

Configuration Sequence

With a Cisco 2-port T1/E1-RAN interface card located in the Cisco 3825 router slot 0 (physical slot HWIC0), for example, the following command specifies the E1 controller as the first port of the Cisco

Router(config)# controller e1 0/1/0 Router(config-controller)#

Step 3 Enter the clocking source (see Clocking Requirements for Cisco 3825 Router, page 4-2 for more

information).

Router(config-controller)# clock source {line [primary] | internal}

Where:

• line—Specifies the E1 line from which the clocking is taken.

• internal—Specifies internal clocking.

• primary—Primary clock source.

For example, the following command configures the clock source for the E1 controller:

Router(config-controller)# clock source internal

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

2-port T1/E1-RAN interface card located in the Cisco 3825 router slot 0 (physical slot HWIC0):

Note When you are using the clock source {line [primary] | internal} command to change the configuration

of an installed card, you must enter the no clock source {line [primary] |internal} command first. Then enter the clock source {line {primary] | internal} command for the new configuration information.

Step 4 Specify the channel-group and time slots to be mapped. Once you configure a channel-group, the serial

interface is automatically created.

Router(config-controller)# channel-group

channel-no

timeslots

timeslot-list

speed {64}

Where:

• channel-no—ID number to identify the channel group. The valid range is 0 to 30.

• timeslot-list—Timeslots (DS0s) to include in this channel group. The valid timeslots are 1 to 31.

• speed {64}—The speed of the DS0: 64 kbps.

For example, the following command configures the channel-group and time slots for the E1 controller:

Router(config-controller)# channel-group 0 timeslots 1-31 speed 64

Note When you are using the channel-group channel-no timeslots timeslot-list {64} command to change the

configuration of an installed card, you must enter the no channel-group channel-no timeslots

timeslot-list speed {64} command first. Then enter the channel-group channel-no timeslots timeslot-list {64} command for the new configuration information.

Step 5 Exit back to global configuration mode.

Router(config-controller)# exit

4-22

Step 6 To Configure the GSM-Abis interface, first specify the serial interface that you want to configure by

entering the interface configuration mode.

Router(config)# interface serial

slot

/subslot/

port:channel-group

Where:

• slot—Number of the slot being configured.

• subslot—Number of the subslot being configured.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

• port—Number of the port being configured.

• channel-group—Specifies the E1 channel group number defined with the channel-group controller

configuration command.

For example, the following command enables the serial interface on VWIC-2/HWIC-2, port 0:

Router(config)# interface serial 0/1/0:0 Router(config-if)#

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Step 7 Enter the following command to configure GSM-Abis interface encapsulation in the interface

configuration mode.

Router(config-if)# encapsulation gsm-abis

Where gsm-abis is the type of interface layer.

For example, the following command enables encapsulation on the GSM-ABIS interface layer:

Router(config-if)# encapsulation gsm-abis

Configuration Sequence

Step 8 To configure the local parameters required to establish an Internet Protocol/User Datagram Protocol

(IP/UDP) backhaul connection, enter the following command including the IP address and port you want to establish the IP/UDP backhaul connection from in the interface configuration mode.

Router(config-if)# gsm-abis local

ip-address port

Where:

• ip-address—The IP address for the entry you wish to establish.

• port—The port you want to use for the entry you wish to establish.

For example, the following command configures the gsm-abis local parameters to an IP address of

10.10.10.2 located on port 5502:

Router(config-if)# gsm-abis local 10.10.10.2 5502

Step 9 To configure the remote parameters required to establish an IP/UDP backhaul connection, enter the

following command including the IP address and port you want to establish the IP/UDP backhaul connection to in the interface configuration mode.

Router(config-if)# gsm-abis remote

ip-address port

Where:

• ip-address—The IP address for the entry you wish to establish.

• port—The port you want to use for the entry you wish to establish.

For example, the following command configures the gsm-abis remote parameters to an IP address of

10.10.10.1 located on port 5502:

Router(config-if)# gsm-abis remote 10.10.10.1 5502

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-23

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuration Sequence

Step 10 Return to Step 1 to configure the next port of the Cisco 2-port T1/E1-RAN interface card and any other

ports on additional Cisco

Step 11 Exit the interface configuration mode.

Router(config-if)# exit

Configuring UMTS Links

Note The following is an example of configuring an E1 on the Cisco 2-port T1/E1-RAN interface card in a

Cisco 3825 router.

Use the following instructions to perform a basic Universal Mobile Telecommunications System (UMTS)-Iub configurational on the Cisco router, enter the following Cisco IOS commands at the router prompt (see the

Cisco 3825 Router Interface Numbering” section on page 3-1 for information about slot and port

2-port T1/E1-RAN interface cards.

2-port T1/E1-RAN interface card located in the Cisco 3825

“Understanding the

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

To configure the UMTS-Iub attributes, follow these steps beginning in the global configuration mode:

Step 1 Set the card type for the Cisco 2-port T1/E1-RAN interface card.

Note This configuration assumes that the Cisco 2-port T1/E1-RAN interface card is installed in all

three Cisco

2-port T1/E1-RAN interface card slots (physical slots HWIC0, HWIC1, HWIC2,

and HWIC3) of the Cisco 3825 router.

• e1—Card type E1.

• t1—Cart type T1.

• slot—Slot number of the interface.

• subslot—Specifies the Cisco 2-port T1/E1-RAN interface card (serial slot) port number.

Router(config)# card type {e1 | t1}

slot subslot

2-port T1/E1-RAN interface card located in the Cisco 3825

2-port T1/E1-RAN interface card

as a E1:

Router(config)# card type e1 0 1

4-24

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Step 2 Specify the controller that you want to configure by entering the controller configuration mode.

Controller E1 0/0/0 maps to the first port of the Cisco Cisco

3825 router serial slot 0 (physical slot HWIC0). Controller E1 0/0/1 maps to the second port of

the Cisco

2-port T1/E1-RAN interface card located in the Cisco 3825 router serial slot 0 (physical slot

HWIC0).

Note If you install a Cisco 2-port T1/E1-RAN interface card in the Cisco 3825 router in physical slot

HWIC1 (leaving physical slot HWIC0 empty), the logical interfaces in physical slot HWIC1 become Serial 0/0/0 and Serial 0/0/1. If you later add a Cisco to physical slot HWIC0, the logical interface numbering shifts. The configuration that you created for interfaces Serial 0/0/0 and Serial 0/0/1 will now be applied to the Cisco

Understanding the Cisco 3825 Router Interface Numbering, page 3-1.

2-port T1/E1-RAN interface card located in the

Configuration Sequence

2-port T1/E1-RAN interface card

Router(config)# controller e1

slot

/subslot/

port

Where:

• slot—Number of serial slot the Cisco 2-port T1/E1-RAN interface card located in the Cisco 3825

router.

• subslot—Number of serial subslot the Cisco 2-port T1/E1-RAN interface card located in the

Cisco

3825 router.

• port—Number of the serial port the Cisco 2-Port T1/E1-RAN interface card is using.

2-port T1/E1-RAN interface card located in the Cisco 3825 router serial slot 0 (physical slot

HWIC0):

Router(config)# controller e1 0/2/0 Router(config-controller)#

Step 3 Configure the AIM for ATM card to be used for ATM traffic on the previously specified E1 controller.

Router(config-controller)# mode atm aim

aim-slot

Where aim-slot sets the mode of the E1 controller in the AIM slot.

For example, the following command sets the mode of the E1 controller in AIM slot 1:

Router(config-controller)# mode atm aim 1

Step 4 Enter the clocking source.

Router(config-controller)# clock source {line [primary] | internal}

OL-15667-03

Where:

• line—Specifies the E1 line from which the clocking is taken.

• internal—Specifies internal clocking.

• primary—Primary clock source.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-25

Configuration Sequence

For example, the following command configures the clock source for the E1 controller:

Router(config-controller)# clock source internal

Note When you are using the clock source {line [primary] | internal} command to change the configuration

Step 5 Exit the controller configuration mode.

Router(config-controller)# exit

Step 6 Configure the network clock support for the Cisco 2-port T1/E1-RAN interface card.

Router(config)# network-clock-participate wic

Where number is the slot number of the Cisco 2-port T1/E1-RAN interface card which is installed on the Cisco

For example, the following command enables the Cisco 2-port T1/E1-RAN interface card in logical slot

Router(config)# network-clock-participate wic 1

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

number

3825 router.

2 (physical slot HWIC1) of the Cisco 3825 router to use the network clock for its timing:

Step 7 Configure the network clock support for the AIM for ATM card interface.

Router(config)# network-clock-participate aim

number

Where number is the slot number of the AIM for ATM card interface installed in the Cisco 3825 router.

For example, the following command enables the AIM for ATM card interface in physical slot 1 of the Cisco

3825 router to use the network clock for its timing:

Router(config)# network-clock-participate aim 1

Step 8 To configure the UMTS-Iub interface, first specify the ATM interface by entering the interface

configuration mode.

Router(config)# interface ATM

slot/subslot/port

Where:

• slot—Specifies the slot number of the VWIC/HWIC previously assigned to the AIM for ATM card.

• subslot—Specifies the subslot number of the VWIC/HWIC previously assigned to the AIM for ATM

card.

• port—Specifies the port on the VWIC/HWIC previously assigned to the AIM for ATM card.

For example, the following command configures the VWIC/HWIC in logical slot 0 (physical slot 0), subslot 0, port 1 located on the motherboard of the Cisco

Router(config)# interface ATM0/2/0 Router(config-if)#

3825 router to be used for ATM traffic:

4-26

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

Help key while in the configuration mode.

Step 9 To create an ATM path on the UMTS Iub interface, enter the following command:

Router(config-if)# atm umts-iub

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Step 10 To configure the local parameters required to establish an IP/UDP backhaul connection, enter the

following command including the IP address and port you want to establish the IP/UDP backhaul connection from.

Router(config-if)# umts-iub local

Step 11 To configure the remote parameters required to establish an IP/UDP backhaul connection, enter the

following command including the IP address and port you want to establish the IP/UDP backhaul connection from.

Router(config-if)# umts-iub remote

Step 12 Create an ATM permanent virtual circuit (PVC):

Router(config-if)# pvc [

name] vpi/vci

Where:

• name—(Optional) specifies the name of the ATM PVC interface you create.

• vpi—Specifies the ATM network virtual path identifier (VPI) of this PVC.

• vci—Specifies the ATM network virtual channel identifier (VCI) of this PVC.

• qsaal—(Optional) specifies the Q.2931 signaling ATM adaptation layer (QSAAL) encapsulation

type.

ip-address port

[qsaal]

Configuration Sequence

Note Typically AAL5 PVCs are defined using qsaal encapsulation. However, if the traffic profile is

such that the AAL5 packets exceed normal signaling (272 bytes) payload size, it is recommended that the PVC be defined using AAL0.

This is commonly true for OAM PVCs and synchronization PVCs. NodeB Application Part (NBAP) and Access Link Control Application Part (ALCAP) PVCs can be defined using qsaal encapsulation.

For example, the following command specifies the ATM PVC interface with a VPI of 0 and a VCI of 100:

Router(config-if)# pvc 0/100

Note PVC definitions should match those on the NodeB and use the following definitions:

NBAP signaling–use qsaal ALCAP signaling–use qsaal AAL2 bearer–use encapsulation aal0 All other PVCs should use encapsulation aal0

Class of service should be defined to match the NodeB PVC class of service definitions. For instance, if the NodeB has defined a PVC with CBR, the PVC on the Cisco use the same CBR definitions.

3825 router should

OAM can be defined on the PVCs as well. If the NodeB has OAM enabled on its PVC, OAM should be defined on the PVCs of the Cisco 3825 router as well.

OL-15667-03

Step 13 Configure the ATM adaptation layer (AAL) and encapsulation type to AAL0 encapsulation.

Router(config-if)# encapsulation

aal-encap

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-27

Configuration Sequence

Where aal-encap specifies the ATM adaptation layer (AAL) and encapsulation type.

For example, the following command specifies the AAL as AAL0:

Router(config-if)# encapsulation aal0

Step 14 Create another ATM permanent virtual circuit (PVC):

Router(config-if)# pvc [

Where:

• name—(Optional) specifies the name of the ATM PVC interface you create.

• vpi—Specifies the ATM network virtual path identifier (VPI) of this PVC.

• vci—Specifies the ATM network virtual channel identifier (VCI) of this PVC.

• qsaal—(Optional) specifies theQ.2931 signaling ATM adaptation layer (QSAAL) encapsulation

For example, the following command specifies the ATM PVC interface with a VPI of 0, a VCI of 100, and a QSAAL:

Router(config-if)# pvc 0/200 qsaal

Step 15 Return to Step 1 to configure the second port of the Cisco 2-port T1/E1-RAN interface card and the ports

on additional Cisco

type.

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

name] vpi/vci

2-port T1/E1-RAN interface cards.

[qsaal]

Step 16 Exit the interface configuration mode.

Router(config-if)# exit

Configuring Redundancy

The Cisco 3825 router can be used either in a redundant configuration (preferable) or as a standalone device.

Note Before implementing redundancy, you must disable extended availability drop-and-insert (EADI)

capabilities on the router using the diable-eadi command in the global configuration mode.

Redundant Cisco 3825 Routers

Use the following instructions to configure the Cisco 3825 router for redundancy. For redundancy, the Cisco

3825 router makes use of the existing HSRP feature. However, additional controls are needed for the Cisco revertive loopback interfaces as well as the backhaul and shorthaul interfaces. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

3825 router. In a redundant configuration, the router must track the status of the health and

4-28

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

To configure a Cisco 3825 router for use in a redundant configuration, follow these steps while in the global configuration mode:

Step 1 First configure the shorthaul loopback interfaces (loopback 103).

Note The loopback interface is software-only, virtual interface that emulates an interface that is

always up. The interface number is the number of the loopback interface that you want to create or configure.

Configuration Sequence

Router(config)# interface loopback

interface

For example, the following command specifies the loopback interface for shorthaul as 103:

Router(config)# interface loopback Loopback103

Step 2 Enter the ip address and subnet mask for the shorthall loopback interface:

Router (config-if)# ip address

Step 3 Exit the interface configuration mode.

Router (config-if)# exit

Step 4 To go to the redundancy mode, enter the redundancy command:

Router(config)# redundancy

Step 5 In the redundancy mode, enter the y-cable mode:

Router(config-r)# mode y-cable

Step 6 To enable the GSM redundancy, enter the standby gsm-redundancy command:

Router(config-r)# standby gsm-redundancy

Step 7 Specify the interface to be used for backhauling.

Router(config-r-y)# standby use-interface

ip_address subnet_mask

interface

backhaul

OL-15667-03

Note The interface that you specify for the backhaul must be a Multi-Link Point-to-Point Protocol

(MLPPP) interface. If you want to use a serial interface as the backhaul, you must first configure that interface to be part of an MLPPP bundle. The interface that you specify for the backhaul interface should match one of those that you configured and tracked in the

Multilink Backhaul Interface” section on page 4-15.

For example, the following command specifies the multilink interface for backhaul:

Router(config-r-y)# standby use-interface Multilink5 backhaul

Step 8 Specify the interface to be used for shorthaul.

Router(config-r-y)# standby use-interface

Note The interface that you specify for the shorthaul interface should match the one that you

configured in the Step 1.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

interface

“Configuring

shorthaul

4-29

Configuration Sequence

For example, the following command specifies the loopback interface for shorthaul:

Router(config-r-y)# standby use-interface Loopback103 shorthaul

Step 9 Exit the y-cable configuration mode.

Router(config-r-y)# exit

Step 10 Exit the redundancy configuration mode.

Router(config-r)# exit

Step 11 Specify the Gigabit Ethernet interface to be configured (see “Configuring Gigabit Ethernet Interfaces”

section on page 4-8 for more details).

Router(config)# interface gigabitethernet

The slot represents the main fixed slot and is always 0 and the port is the number of the port (0 or 1).

For example, the following command specifies the Gigabit Ethernet interface in slot 0 on port l:

Router(config)# interface gigabitethernet 0/1 Router(config-if)#

Step 12 Enable HSRP, and assign an IP address to the virtual router. This address is the same for both the active

and standby routers.

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

slot/port

Note In redundant configurations, the Cisco 3825 router uses HSRP to control the active and standby routers.

To use HSRP, you must configure the standby priority attributes and the IP address of the virtual router. Priority is determined first by the configured priority value, and the IP address. In each case, a higher value has greater priority.

Router(config-if)# standby [

group-number] ip-address

[secondary]

Where:

• group-number—(Optional) Group number on the interface to which the timers apply. The default

• ip-address—(Optional) IP address of the Hot Standby router interface.

• secondary—(Optional) Indicates the IP address is a secondary Hot Standby router interface. Useful

on interfaces with primary and secondary addresses; you can configure primary and secondary HSRP addresses.

For example, the following command specifies the hot standby group 1 with the IP address as 55.0.0.10:

Router(config-if)# standby 1 ip 55.0.0.10

Step 13 To configure the time between “hello packets” and the time before other routers declare the active Hot

Standby or standby router to be down, use the standby timers command in interface configuration mode. To restore the timers to their default values, use the no form of this command. Indicate the hot standby group and timers to be configured.

Router(config-if)# standby [group-number] timers [msec]

hellotime

[msec]

holdtime

4-30

Where:

• group-number—(Optional) Group number on the interface to which the timers apply. The default is

• msec—(Optional) Interval in milliseconds. Millisecond timers allow for faster failover.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

• hellotime—Hello interval (in seconds). This is an integer from 1 to 254. The default is 3 seconds. If

the msec option is specified, hello interval is in milliseconds. This is an integer from 15 to 999.

• holdtime—Time (in seconds) before the active or standby router is declared to be down. This is an

integer from x to 255. The default is 10 seconds. If the msec option is specified, holdtime is in milliseconds. This is an integer from y to 3000.

Where:

–

x is the hellotime + 50 milliseconds, then rounded up to the nearest 1 second

–

y is greater than or equal to 3 times the hellotime and is not less than 50 milliseconds.

For example, the following command specifies the hot standby group 1 with the timers set between 1 and 3 seconds:

Router(config-if)# standby 1 timers 1 3

Step 14 To configure HSRP preemption and preemption delay, use the standby preempt command in interface

configuration mode. To restore the default values, use the no form of this command.

Note Without preemption, a standby router will transition to the active state only if HSPR “hello

packets” cease. In a RAN-O solution, you may sometimes want a switchover to occur in the absence of a router GE failure; therefore, you need to configure preemption.

Configuration Sequence

Router(config-if)# standby [group-number] preempt [delay{minimum

delay

}]

delay

|reload

delay

|sync

Where:

• group-number—(Optional) Group number on the interface to which the other arguments in this

command apply.

• delay—(Optional) Required if either the minimum, reload, or sync keywords are specified.

• minimum delay—(Optional) Specifies the minimum delay period in delay seconds. The delay

argument causes the local router to postpone taking over the active role for delay (minimum) seconds since that router was last restarted. The range is from 0 to 3600 seconds (1 hour). The default is 0 seconds (no delay).

• reload delay—(Optional) Specifies the preemption delay period after a reload only. This delay

period applies only to the first interface-up event after the router has reloaded.

• sync delay—(Optional) Specifies the maximum synchronization period for IP redundancy clients in

delay seconds.

For example, the following command specifies the hot standby group 1 with preempt:

Router(config-if)# standby 1 preempt

Note The default group number is 0. The default delay is 0 seconds; if the router wants to preempt, it will do

so immediately. By default, the router that comes up later becomes the standby.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-31

Configuration Sequence

Step 15 To configure the name of the standby group, use the standby name command in interface configuration

mode. To disable the name, use the no form of this command.

Router(config-if)# standby [

Where:

• group-number—Specifies the standby group number.

• group-name—Specifies the name of the standby group.

For example, the following command specifies the hot standby group name as one:

Router(config-if)# standby 1 name_one

Note Typically, only one GE is used in a RAN-O solution. So, the command must be standby 1

Caution If you omit the group-name or if you enter a group name that does not begin with one or two, the

configuration will fail and there will be a mismatch in the information displayed by the show redundancy and show standby commands.

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

group-number

name_one.

] name [

group-name

]

Step 16 To configure HSRP to track an object and change the Hot Standby priority based on the state of the

object, use the standby track command in interface configuration mode. To remove the tracking, use the no form of this command.

Note When you use the Cisco 3825 router in a RAN-O solution, you must configure the GE interface

to track the multilink interface and the loopback interface.

Router(config-if)# standby [group-number] track [

interface-priority

]

interface-type interface-number

Where:

• group-number—(Optional) Group number to which the tracking applies.

• interface-type—Interface type (combined with interface number) that will be tracked.

• interface-number—Interface number (combined with interface type) that will be tracked.

• interface-priority—(Optional) Amount by which the Hot Standby priority for the router is

decremented (or incremented) when the interface goes down (or comes back up). The default value is 10.

For example, the following command specifies the hot standby group 1 to track Loopback 103 interface:

Router(config-if)# standby 1 track Loopback103

4-32

Note In redundant configurations, you should issue standby track commands for both the health

interface (loopback101), the revertive interface (loopback102), the backhaul interface (multilink1), and shorthaul interface (loopback 103). The decrement values must be as follows: 10 for the multilink, GE, and health interfaces; 5 for the revertive interface.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Step 17 Continue to configure HSRP to track Multilink1 and Loopback103 if needed.

Step 18 Specify a priority of 100.

Router(config-if)# standby

Note If you are using the Cisco 3825 in a redundant configuration, you must also set the keepalives under the

GE interface to 1.

group

priority 100

Router(config-if)# keepalive 1

Standalone Cisco 3825 Router

The Cisco 3825 router has relays that work with a special y-cable for redundancy and that are controlled by HSRP. You can, however, use the Cisco Cisco

3825 in a redundant configuration, you should not configure HSRP and you must manually control

the relays of the Cisco

2-port T1/E1-RAN card.

3825 as a standalone device. If you choose not to use the

Configuration Sequence

To manually set the relays to open or closed, follow these steps, while in the global configuration mode:

Step 1 To go to the redundancy mode, enter redundancy mode:

Router(config)# redundancy

Step 2 In the redundancy mode, enter the y-cable mode:

Router(config-r)# mode y-cable

Step 3 Specify that the router is to be used as a standalone device. This command closes the relays.

Router(config-r-y)# standalone

Step 4 Exit y-cable configuration mode.

Router(config-r-y)# exit

To verify the status of the relays on an Cisco 3825 router, use the show controllers command.

Configuring for SNMP Support

Use the following instructions to configure for Simple Network Management Protocol (SNMP) support: setting up the community access, establishing a message queue for each trap host, enabling the router to send SNMP traps, enabling SNMP traps for alarms, and enabling SNMP traps for a specific environment. You might also need to enter other configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.

OL-15667-03

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,

you can exit the privileged level and return to the user level by entering disable at the Router# prompt.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-33

Configuration Sequence

To configure a Cisco 3825 for SNMP, follow these steps while in the global configuration mode:

Step 1 To set up the community access string to permit access to the SNMP, use the snmp-server community

command. The no form of this command removes the specified community string.

Router(config)# snmp-server community

Where:

• string—Community string that acts like a password and permits access to the SNMP protocol.

• view view-name—(Optional) Name of a previously defined view. The view defines the objects

• ro—(Optional) Specifies read-only access. Authorized management stations are only able to

• rw—(Optional) Specifies read-write access. Authorized management stations are able to both

• number—(Optional) Integer from 1 to 99 that specifies an access list of IP addresses that are allowed

For example, the following command sets up the community access string as xxxxx with read-only access:

Router(config)# snmp-server community xxxxx RO

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

string

[view

available to the community.

retrieve MIB objects.

retrieve and modify MIB objects.

to use the community string to gain access to the SNMP agent.

view-name

] [ro | rw] [

number

]

Step 2 To establish the message queue length for each trap host, use the snmp-server queue-length command.

Router(config)# snmp-server queue-length

length

Where length is the integer that specifies the number of trap events that can be held before the queue must be emptied.

For example, the following command establishes the number of trap events to 100:

Router(config)# snmp-server queue-length 100

Step 3 To enable the router to send SNMP traps or informs (SNMP notifications), use the snmp-server enable

traps command. Use the no form of this command to disable SNMP notifications.

Router(config)# snmp-server enable traps [

notification-type

] [

notification-option

]

Where:

• notification-type—snmp [authentication]—Enables RFC 1157 SNMP notifications. Note that use

of the authentication keyword produces the same effect as not using the authentication keyword. Both the snmp-server enable traps snmp and snmp-server enable traps snmp authentication forms of this command will globally enable (or, if using the no form, disable) the following SNMP traps:

–

authentication failure

–

linkup

–

linkdown

–

coldstart

4-34

–

warmstart

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

• notification-option—(Optional) atm pvc [interval seconds] [fail-interval seconds]—The optional

interval seconds keyword/argument combination specifies the minimum period between successive traps, in the range from 1 to 3600. Generation of PVC traps is dampened by the notification interval in order to prevent trap storms. No traps are sent until the interval lapses. The default interval is 30.

The optional fail-interval seconds keyword/argument combination specifies the minimum period for storing the failed time stamp, in the range from 0 to 3600. The default fail-interval is 0.

envmon [voltage | shutdown | supply | fan | temperature]—When the envmon keyword is used, you can enable a specific environmental notification type, or accept all notification types from the environmental monitor system. If no option is specified, all environmental notifications are enabled. The option can be one or more of the following keywords: voltage, shutdown, supply, fan, and

temperature.

isdn [call-information | isdn u-interface]—When the isdn keyword is used, you can specify the call-information keyword to enable an SNMP ISDN call information notification for the ISDN MIB

subsystem, or you can specify the isdnu-interface keyword to enable an SNMP ISDN U interface notification for the ISDN U interface MIB subsystem.

repeater [health | reset]—When the repeater keyword is used, you can specify the repeater option. If no option is specified, all repeater notifications are enabled. The option can be one or more of the following keywords:

Configuration Sequence

–

health—Enables IETF Repeater Hub MIB (RFC 1516) health notification.

–

reset—Enables IETF Repeater Hub MIB (RFC 1516) reset notification.

For example, the following command enables traps for SNMP link down, link up, coldstart and warmstart:

Router(config)# snmp-server enable traps snmp linkdown linkup coldstart warmstart

Step 4 To enable SNMP traps for all IP-RAN notifications, enter:

Router(config)# snmp-server enable traps ipran

Note Besides enabling SNMP traps for all IP-RAN notifications, you can also enable traps for

IP-RAN GSM alarms, UMTS alarms, and general information about the backhaul utilization (see

Appendix A, “Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference” for

descriptions on how to use these SNMP commands.

Step 5 To enable SNMP traps for a specific environment, enter:

Router(config)# snmp-server enable traps envmon

Step 6 To specify the recipient of an SNMP notification operation, use the snmp-server host command. To

remove the specified host, use the no form of this command.

Router(config)# snmp-server host noauth | priv]}]

community-string

host-addr

[udp-port port] [

[traps | informs] [version {1 | 2c | 3 [auth |

notification-type

]

OL-15667-03

Where:

• host-addr—Name or Internet address of the host (the targeted recipient).

• traps—(Optional) Send SNMP traps to this host. This is the default.

• informs—(Optional) Send SNMP informs to this host.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-35

Configuration Sequence

• version—(Optional) Version of the SNMP used to send the traps. Version 3 is the most secure

• community-string—Password-like community string sent with the notification operation. Though

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

model, as it allows packet encryption with the priv keyword. If you use the version keyword, one of the following must be specified:

–

1—SNMPv1. This option is not available with informs.

–

2c—SNMPv2C.

–

3—SNMPv3. The following three optional keywords can follow the version 3 keyword:

–auth (Optional). Enables Message Digest 5 (MD5) and Secure Hash Algorithm (SHA) packet authentication

–noauth (Default). The noAuthNoPriv security level. This is the default if the [auth | noauth | priv] keyword choice is not specified.

–priv (Optional). Enables Data Encryption Standard (DES) packet encryption (also called “privacy”).

you can set this string using the snmp-server host command by itself, we recommend you define this string using the snmp-server community command before using the snmp-server host command.

• udp-port port—UDP port of the host to use. The default is 162.

• notification-type—(Optional) Type of notification to be sent to the host. If no type is specified, all

notifications are sent. The notification type can be one or more of the following keywords:

–

aaa_server—Enable SNMP AAA Server traps.

–

atm—Enable SNMP atm Server traps.

–

ccme—Enable SNMP ccme traps.

–

cnpd—Enable NBAR Protocol Discovery traps.

–

config—Enable SNMP config traps.

–

config-copy—Enable SNMP config-copy traps.

–

cpu—Allow cpu related traps.

–

dial—Enable SNMP dial control traps.

–

dnis—Enable SNMP DNIS traps.

–

ds0-busyout—Enable ds0-busyout traps.

–

ds1—Enable SNMP DS1 traps.

–

ds1-loopback—Enable ds1-loopback traps.

–

ds3—Enable SNMP DS3 traps.

–

dsp—Enable SNMP dsp traps.

–

eigrp—Enable SNMP EIGRP traps.

–

entity—Enable SNMP entity traps.

4-36

–

envmon—Enable SNMP environmental monitor traps.

–

flash—Enable SNMP FLASH notifications.

–

frame-relay—Enable SNMP frame-relay traps.

–

hsrp—Enable SNMP HSRP traps.

–

icsudsu—Enable SNMP ICSUDSU traps.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

–

ipmulticast—Enable SNMP ipmulticast traps.

–

ipran—Enable IP-RAN Backhaul traps.

–

ipsla—Enable SNMP IP SLA traps.

–

isdn—Enable SNMP isdn traps.

–

12tun—Enable SNMP L2 tunnel protocol traps.

–

mpls—Enable SNMP MPLS traps.

–

msdp—Enable SNMP MSDP traps.

–

mvpn—Enable Multicast Virtual Private Networks traps.

–

ospf—Enable OSPF traps.

–

pim—Enable SNMP PIM traps.

–

pppoe—Enable SNMP pppoe traps.

–

pw—Enable SNMP PW traps.

–

rsvp—Enable RSVP flow change traps.

–

snmp—Enable SNMP traps.

Configuration Sequence

–

srst—Enable SNMP srst traps.

–

syslog—Enable SNMP syslog traps.

–

tty—Enable TCP connection traps.

–

voice—Enable SNMP voice traps.

–

vrrp—Enable SNMP vrrp traps.

–

vtp—Enable SNMP VTP traps.

–

xgcp—Enable XGCP protocol traps.

For example, the following command specifies a recipient of the SNMP operation with a host-address of 10.20.30.40 with a version SNMP of SNMPv2C:

Router(config)# snmp-server host 10.20.30.40 version 2c

Step 7 Exit the global configuration mode.

Router(config)# exit

Configuring Inverse Multiplexing over ATM (IMA)

A new feature, Inverse Multiplexing over ATM (IMA) interface as a shorthaul has been implemented in Cisco IOS Release 12.4(4)MR. With this feature, you can now configure existing UMTS commands on IMA interfaces. No new commands are added for this new feature. Only previously existing Cisco IOS commands have been added for this feature (see

RAN-O Command Reference” for detailed command information).

Appendix A, “Cisco 3825 Mobile Wireless Edge Router

OL-15667-03

Inverse multiplexing provides the capability to transmit and receive a single high-speed data stream over multiple slower-speed physical links. In inverse multiplexing over ATM (IMA), the originating stream of ATM cells is divided so that complete ATM cells are transmitted in round-robin order across the set of ATM links. IMA is supported on the Cisco 2-port T1/E1-RAN card on the Cisco

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

3825 router.

4-37

Configuration Sequence

Note With Cisco IOS Release 12.4(16)MR1 and later, the Cisco 3825 router supports the AIM-ATM-8 card.

The Cisco to 8 ATM ports for AIM with the AIM-ATM-8 card installed in slot 1.

The AIM for ATM card (AIM-ATM) supports up to four independent ATM links.

To determine which AIM for ATM card is installed in your router, use the show diagnostics command in privileged EXEC mode.

To configure a Cisco 3825 router for IMA, follow these steps while in the global configuration mode:

Step 1 Enter interface configuration mode and specify the location of the interface.

Router(config)# interface atm

Where:

• slot—Specifies the slot number of the VWIC/HWIC previously assigned to the AIM for ATM

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

3825 router supports up to 12 ATM ports with the AIM-ATM-8 card installed in slot 0 and up

slot

/subslot/

(

Step 2 of the “Configuring UMTS Links” procedure on page 4-24).

port

• subslot—Specifies the subslot number of the VWIC/HWIC previously assigned to the AIM for ATM

card (

Step 2 of the “Configuring UMTS Links” procedure on page 4-24).

• port—Specifies the port on the VWIC/HWIC previously assigned to the AIM for ATM card (Step 3

of the “Configuring UMTS Links” procedure on page 4-24).

For example, the following command configures the VWIC/HWIC in logical slot 0 (physical slot 0), subslot 0, port 1 located on the motherboard of the Cisco

Router(config)# interface ATM0/2/0 Router(config-if)#

Note To see a list of the configuration commands available to you, enter ? at the prompt or press the

3825 router to be used for ATM traffic:

Help key while in the configuration mode.

Step 2 Disable the IP address configuration for the physical layer interface. This and other protocol parameters

should be configured on the IMA interface.

Router(config-if)# no ip address

Step 3 Disable the Interim Local Management Interface (ILMI) keepalive parameters.

Router(config-if)# no atm ilmi-keepalive

Step 4 Specify the link that is included in an IMA group.

Router(config-if)# ima-group

group-number

4-38

Where group-number specifies the group number of the IMA group.

For example, the following command specifies the group number of the IMA group as 0:

Router(config-if)# ima-group 0

Step 5 Randomize the ATM cell payload frames.

Router(config-if)# scrambling-payload

Step 6 Perform Steps 1 to 5 to add another member link.

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Step 7 Specify the slot location and port of IMA interface group.

Router(config-if)# interface ATM

Where:

• slot—Specifies the slot location of the ATM IMA port adapter.

• group-number—Specifies the group number of the IMA group.

For example, the following command specifies the slot number as 0 and the group number as 0:

Router(config-if)# interface ATM0/IMA0

Note Should you desire, the optional ima group-id command can be used to explicitly configure the IMA

Group ID for the IMA interface. You cannot configure the same IMA Group ID on two different IMA interfaces; therefore, if you configure an IMA Group ID with the system-selected default ID already configured on an IMA interface, the system toggles the IMA interface to make the user-configured IMA Group ID the effective IMA Group ID. At the same, the system toggles the original IMA interface to select a different IMA Group ID.

Step 8 Disable the IP address configuration for the physical layer interface.

Router(config-if)# no ip address

slot

/IMA

<group-number>

Configuration Sequence

Step 9 Specify the ATM bandwith as dynamic.

Router(config-if)# atm bandwith dynamic

Step 10 Create an ATM path on the UMTS Iub interface, enter the following command:

Router(config-if)# atm umts-iub

Step 11 Disable the Interim Local Management Interface (ILMI) keepalive parameters.

Router(config-if)# no atm ilmi-keepalive

Step 12 Create an ATM PVC:

Router(config-if)# pvc [

name] vpi/vci

[qsaal]

Where:

• name—(Optional) specifies the name of the ATM PVC interface you create.

• vpi—Specifies the ATM network virtual path identifier (VPI) of this PVC.

• vci—Specifies the ATM network virtual channel identifier (VCI) of this PVC.

• qsaal—(Optional) specifies theQ.2931 signaling ATM adaptation layer (QSAAL) encapsulation

type.

Note Typically AAL5 PVCs are defined using qsaal encapsulation. However, if the traffic profile is

such that the AAL5 packets exceed normal signaling (272 bytes) payload size, it is recommended that the PVC be defined using AAL0.

This is commonly true for OAM PVCs and synchronization PVCs. NodeB Application Part (NBAP) and Access Link Control Application Part (ALCAP) PVCs can be defined using qsaal encapsulation.

OL-15667-03

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-39

Configuration Sequence

For example, the following command specifies the ATM PVC interface with a VPI of 2and a VCI of 1:

Router(config-if)# pvc 2/1

Note PVC definitions should match those on the NodeB and use the following definitions:

Step 13 Configure the AAL and encapsulation type to AAL0 encapsulation.

Router(config-if)# encapsulation

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

NBAP signaling–use qsaal ALCAP signaling–use qsaal AAL2 bearer–use encapsulation aal0 All other PVCs should use encapsulation aal0

Class of service should be defined to match the NodeB PVC class of service definitions. For instance, if the NodeB has defined a PVC with CBR, the PVC on the Cisco use the same CBR definitions.

OAM can be defined on the PVCs as well. If the NodeB has OAM enabled on its PVC, OAM should be defined on the PVCs of the Cisco 3825 router as well.

aal-encap

3825 router should

Where aal-encap specifies the AAL and encapsulation type.

For example, the following command specifies the AAL as AAL0:

Router(config-if)# encapsulation aal0

Step 14 Perform Steps 12 and 13 to add another ATM PVC.

Step 15 To configure the local parameters required to establish an IP/UDP backhaul connection, enter the

following command including the IP address and port you want to establish the IP/UDP backhaul connection from.

Router(config-if)# umts-iub local

ip-address port

For example, the following command configures the umts-iub local interface with an IP address and port of 20.20.20.21 6666:

Router(config-if)# umts-iub local 20.20.20.21 6666

Step 16 To configure the remote parameters required to establish an IP/UDP backhaul connection, enter the

following command including the IP address and port you want to establish the IP/UDP backhaul connection from.

Router(config-if)# umts-iub remote

ip-address port

For example, the following command configures the umts-iub remote interface with an IP address and port of 20.20.20.20 6666:

Router(config-if)# umts-iub remote 20.20.20.20 6666

4-40

Step 17 Exit the interface configuration mode.

Router(config-if)# exit

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

Configuring PVC Routing (HSDPA Offload)

A new feature, PVC Routing has been implemented in Cisco IOS Release 12.4(4)MR. With this feature, you can now off load PVC traffic from a physical ATM shorthaul to an alternate backhaul. For each alternate backhaul, you will need to create a logical shorthaul by creating an ATM sub-interface. Traffic from the PVCs configured under this logical shorthaul will go through the corresponding alternate backhaul. Three new commands are added using the Sub-interface Configuration mode for this new feature: atm umts, umts local, and umts remote (see

Router RAN-O Command Reference” for detailed command information).

To configure a Cisco 3825 router for PVC Routing, follow these steps while in the global configuration mode:

Step 1 First, add the Gigabit Ethernet interfaces by specifying the port adapter type and the location of the

interface to be configured.

Router(config)# interface gigabitethernet

The slot represents the main fixed slot and is always 0 and the port is the number of the port (0 or 1).

For example, the following command specifies the slot number as 0 and the port number as 0:

Router(config)# interface gigabitethernet 0/0

Appendix A, “Cisco 3825 Mobile Wireless Edge

slot/port

Configuration Sequence

Step 2 Assign an IP address and subnet mask to the interface.

Router(config-if)# ip address

ip_address subnet_mask

For example, the following command specifies the IP address 192.168.1.1 and subnet mask

255.255.255.0:

Router(config-if)# interface ip address 192.168.1.1 255.255.255.0

Step 3 Specify the duplex operation.

Router(config-if)# duplex [auto | half | full]

For example, the following command specifies the duplex operation as auto:

Router(config-if)# duplex auto

Step 4 Specify the speed.

Router(config-if)# speed [auto | 1000 | 100 | 10]

For example, the following command specifies the speed as auto:

Router(config-if)# speed auto

Step 5 Exit the interface configuration mode.

Router(config-if)# exit

Step 6 Enter interface configuration mode and specify the location of the interface.

Router(config)# interface atm

slot

/subslot/

port

OL-15667-03

Where:

• slot—Specifies the slot number of the VWIC/HWIC previously assigned to the AIM for ATM

(

Step 2 of the “Configuring UMTS Links” procedure on page 4-24).

• subslot—Specifies the subslot number of the VWIC/HWIC previously assigned to the AIM for ATM

card (

Step 2 of the “Configuring UMTS Links” procedure on page 4-24).

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

4-41

Configuration Sequence

• port—Specifies the port on the VWIC/HWIC previously assigned to the AIM for ATM card (Step 3

For example, the following command configures the VWIC/HWIC in logical slot 0 (physical slot 0) port 1 located on the motherboard of the Cisco

Router(config)# interface ATM0/2/0 Router(config-if)#

Step 7 Disable the IP address configuration for the physical layer interface. This and other protocol parameters

should be configured on the IMA interface.

Router(config-if)# no ip address

Step 8 Disable the Interim Local Management Interface (ILMI) keepalive parameters.

Router(config-if)# no atm ilmi-keepalive

Step 9 Specify the link that is included in an IMA group.

Router(config-if)# ima-group

Where group-number specifies the group number of the IMA group.

For example, the following command specifies the group number of the IMA group as 0:

Router(config-if)# ima-group 0

Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line

of the “Configuring UMTS Links” procedure on page 4-24).

3825 router to be used for ATM traffic:

group-number

Step 10 Randomize the ATM cell payload frames.

Router(config-if)# scrambling-payload

Step 11 Specify the slot location and port of IMA interface group.

Router(config-if)# interface ATM

slot

/IMA

<group-number>

Where:

• slot—Specifies the slot location of the ATM IMA port adapter.

• group-number—Specifies the group number of the IMA group.

For example, the following command specifies the slot number as 0 and the group number as 0:

Router(config-if)# interface ATM0/IMA0

Note Should you desire, the optional ima group-id command can be used to explicitly configure the IMA

Step 12 Create an ATM path on the UMTS Iub interface, enter the following command:

Router(config-if)# atm umts-iub

4-42

Step 13 Disable the ILMI keepalive parameters.

Router(config-if)# no atm ilmi-keepalive

Step 14 Create an ATM PVC:

Router(config-if)# pvc [

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

name] vpi/vci

[qsaal]

OL-15667-03

Cisco Systems 3825 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

CONTENTS

Preface

Overview of the Cisco 3825 Mobile Wireless Edge Router

Introduction

RAN-Optimization Implementation

Cisco Abis and Iub Optimization over IP Implementation

Cisco GSM Abis Optimization over IP

Cisco Pseudowire Emulation Edge-to-Edge (PWE3)

Cisco Iub Optimization over IP

Intelligent Cell Site IP Services

Cell Site Points-of-Presence (POPs)

Cisco IOS Software Features

Software features for the RAN-O Implementation

Software Features

Redundancy Support

HSRP

Configuration Statements for CISCO-IP-RAN-BACKHAUL-MIB

MIB Support

Limitations and Restrictions

RAN-O Implementation Limitations and Restrictions

Hardware not Supported on the Cisco 3825 Router

UMTS Iub and GSM Abis Implementation Limitations and Restrictions

Hardware not Supported for UMTS Iub

Hardware not Supported for GSM Abis

New Features in Cisco IOS Release 12.4(16)MR2

Keyword ignore-vpi-vci Added to xconnect Command

New Features in Cisco IOS Release 12.4(16)MR1

Emulation of TDM Circuit via MPLS/IP (PWE3/TDM)

Structure-agnostic TDM over Packet (SAToP)

Structure-aware TDM CESoPSN

Transportation of ATM Service via MPLS/IP (PWE3/ATM)

Transparent Cell Transport Service/ATM Port Mode

ATM N-to-One VCC Cell Mode

ATM AAL5 CPCS-SDU Mode

ATM One-to-One VCC Cell Mode

Cell Packing

PVC Mapping

Transportation of ATM Service via L2TPv3

ATM Port Cell Relay Service

ATM VCC Cell Relay Service

ATM AAL5-SDU Mode

Cell Packing

PVC Mapping

Asymmetric PWE3

Ethernet over MPLS

VLAN Mode

Port Mode

PWE3 over MLPPP

PWE3 Redundancy

TDM PWE3 Redundancy

ATM PWE3 Redundancy

Ethernet PWE3 Redundancy

Maximum Number of Supported ATM Ports

ATM Cell Switching

New Features in Cisco IOS Release 12.4(16)MR

UMTS Congestion Management Control

Inverse Multiplexing over ATM (IMA)

Permanent Virtual Circuit (PVC) Routing

Behavior Changes

UMTS QoS

Cisco IOS Software Basics

Getting Help

Understanding Command Modes

Undoing a Command or Feature

Saving Configuration Changes

Where to Go Next

First-Time Configuration

Understanding Boot Images

Understanding the Cisco 3825 Router Interface Numbering

Slot and Port Numbering

Setup Command Facility

Before Starting Your Router

Configuring Global Parameters

Using the Setup Command Facility

Completing the Configuration