Cisco Systems UBR10012 User Manual

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

October 2004

Corporate 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: 408 526-4100

Text Part Number: OL-1237-01

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, EXPRESSED 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 IMPLIED, INCLUDING, WITHOUT 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.

CCVP, the Cisco Logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networking Academy, Network Registrar, Pac ke t, PIX, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StackWise, The Fastest Way to Increase Your Internet Quotient, and TransPath 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. (0704R)

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide OL-1237-01

Press,

Preface vii

Purpose vii

Audience vii

Document Organization viii

Preface

This guide documents processes and procedures for user level hardware troubleshooting on the Cisco uBR10012 universal broadband router. For complete configuration instructions, please refer to the Cisco uBR10012 Universal Broadband Router Software Configuration Guide and the documents listed in the “Related Documentation” section on page viii.

• Purpose, page vii

• Audience, page vii

• Document Organization, page viii

• Related Documentation, page viii

• Obtaining Documentation, page ix

Purpose

Audience

• Documentation Feedback, page ix

• Obtaining Technical Assistance, page x

• Obtaining Additional Publications and Information, page xi

The Cisco uBR10012 router provides data and Voice over IP (VoIP) services to cable modems (CMs) and customer premises equipment (CPE) devices over a cable TV (CATV) network, supplying high-speed Internet and voice connectivity over the coaxial cable that provides TV and other signals. Many of the Cisco uBR10012 modules are available in redundant configurations, so that the failure of one module does not affect systems operations. This guide provides troubleshooting steps for a failed component that you can take before system failure occurs and before intervention from higher level support agencies becomes necessary.

To benefit from this guide, you must be experienced using Cisco IOS and have some responsibility for installing, configuring, or operating the Cisco uBR10012 router. Knowledge of basic cable data network operations and of the Data-Over-Cable Service Interface Specifications (DOCSIS), which define the transmission of data and other services over a coaxial cable TV network.

OL-1237-01

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

vii

Preface

Document Organization

The sections of this guide are as follows:

Chapter Description

Chapter 1, “Basic Troubleshooting Tasks and Startup Issues”

Chapter 2, “PEM Faults and Fan Assembly Failures”

Chapter 3, “Troubleshooting PRE-1 Modules” How to troubleshoot Performance Routing Engine (PRE-1) modules. It

Chapter 4, “Troubleshooting Line Cards” Troubleshooting faults for all following Cisco uBR10012 line cards.

Chapter 5, “Replacing or Recovering Passwords”

Appendix A, “Unsupported Commands” A list of the commands that are not supported in Cisco IOS Release

Appendix B, “Recommended Tools and Test Equipment”

Basic procedures that users should perform before undertaking a detailed troubleshooting analysis of the Cisco uBR10012 router or logging a case with the Cisco Technical Assistance Center (TAC).

Methods for troubleshooting faults involving the Cisco uBR10012 Power Entry Modules (PEMs) and blower modules.

provides information on troubleshooting PRE-1 fault states, the management Ethernet port, and the serial port.

How to recover a lost enable or console login password, and how to replace a lost enable secret password on the Cisco uBR10012 router.

12.2(15)BC1 for the Cisco uBR10012 router.

A list of basic tools and test equipment necessary to perform maintenance and troubleshooting tasks on the Cisco uBR10012 router.

Obtaining Documentation

Cisco documention and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Obtaining Documentation

Cisco.com

You can access the most current Cisco documentation on the World Wide Web at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

International Cisco websites can be accessed from this URL:

http://www.cisco.com/public/countries_languages.shtml

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

• Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from

the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/index.shtml

• Nonregistered Cisco.com users can order documentation through a local account representative by

calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

You can submit e-mail comments about technical documentation to bug-doc@cisco.com.

OL-1237-01

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

Obtaining Technical Assistance

You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:

Cisco Systems Attn: Customer Document Ordering 170 West Tasman Drive San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, the Cisco Technical Assistance Center (TAC) provides 24-hour-a-day, award-winning technical support services, online and over the phone. Cisco.com features the Cisco TAC website as an online starting point for technical assistance. If you do not hold a valid Cisco service contract, please contact your reseller.

Cisco TAC Website

Preface

The Cisco TAC website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The Cisco TAC website is available 24 hours a day, 365 days a year. The Cisco TAC website is located at this URL:

http://www.cisco.com/tac

Accessing all the tools on the Cisco TAC website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a login ID or password, register at this URL:

http://tools.cisco.com/RPF/register/register.do

Opening a TAC Case

Using the online TAC Case Open Tool is the fastest way to open P3 and P4 cases. (P3 and P4 cases are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Case Open Tool automatically recommends resources for an immediate solution. If your issue is not resolved using the recommended resources, your case will be assigned to a Cisco TAC engineer. The online TAC Case Open Tool is located at this URL:

http://www.cisco.com/tac/caseopen

For P1 or P2 cases (P1 and P2 cases are those in which your production network is down or severely degraded) or if you do not have Internet access, contact Cisco TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2 cases to help keep your business operations running smoothly.

To open a case by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227) EMEA: +32 2 704 55 55 USA: 1 800 553-2447

For a complete listing of Cisco TAC contacts, go to this URL:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Preface

Obtaining Additional Publications and Information

TAC Case Priority Definitions

To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.

Priority 1 (P1)—Your network is “down” or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Priority 2 (P2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Priority 3 (P3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Priority 4 (P4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

• Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Go

to this URL to visit the company store:

http://www.cisco.com/go/marketplace/

• The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as

ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

• Cisco Press publishes a wide range of general networking, training and certification titles. Both new

and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press online at this URL:

http://www.ciscopress.com

• Packet magazine is the Cisco quarterly publication that provides the latest networking trends,

technology breakthroughs, and Cisco products and solutions to help industry professionals get the most from their networking investment. Included are networking deployment and troubleshooting tips, configuration examples, customer case studies, tutorials and training, certification information, and links to numerous in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/packet

• iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet

business strategies for executives. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

OL-1237-01

• Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering

professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

Obtaining Additional Publications and Information

• Training—Cisco offers world-class networking training. Current offerings in network training are

listed at this URL:

http://www.cisco.com/en/US/learning/index.html

Preface

xii

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

CHAPTER

Basic Troubleshooting Tasks and Startup Issues

This section describes the basic procedures that users should perform before undertaking a detailed troubleshooting analysis of the Cisco uBR10012 router or logging a case with the Cisco Technical Assistance Center (TAC).

These basic troubleshooting checks are organized as follows:

• Basic Troubleshooting Checklist, page 1-1

• Confirming the Hardware Installation, page 1-2

• Displaying the Cisco IOS Software Version, page 1-3

• Displaying System Environment Information, page 1-4

• Hardware Troubleshooting Flowchart, page 1-4

• Cisco uBR10012 System Startup Sequence, page 1-5

Basic Troubleshooting Checklist

If you encounter a problem after you install the Cisco uBR10012 router, go through the following troubleshooting checklist to check for the most common error conditions before you contact the Cisco Technical Assistance Center (TAC) or before you perform a detailed troubleshooting analysis:

1. Is the power on?

2. Is each Power Entry Module (PEM) securely inserted into the router? Is each PEM connected to a

power source that is supplying voltage in the proper AC or DC range? Are all power leads and cables firmly connected at both ends?

3. Is the fan assembly module installed in the chassis and operating? Can you hear the fans operating,

and when you put your hand in front of the fan blowers, can you feel the air flow? Are all empty slots covered with blank front panels, to ensure the correct air flow through the chassis for cooling?

4. Is each PRE-1 module firmly seated and securely inserted in the chassis?

5. Is at least one Timing, Communication and Control Plus (TCC+) card installed in the router?

6. Are the other line cards firmly seated and securely screwed to the chassis?

7. Are all data cables firmly connected at both ends?

8. Are the ports properly configured? Refer to the Cisco uBR10012 Universal Broadband Router

Software Configuration Guide for configuration examples.

After going through this checklist, go through the remaining sections in this chapter to verify the installation and to perform basic troubleshooting.

OL-1237-01

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

1-1

Confirming the Hardware Installation

Start troubleshooting the installation by issuing the show hardware command. The show hardware command displays all hardware components that are recognized by the system. These components can include the following:

• Performance Routing Engine (PRE-1) modules (minimum of one, maximum of two)

• FastEthernet Interface (onboard the active PRE-1 module)

• Cable Interface line cards (minimum of one, maximum of eight):

–

Cisco uBR10-MC5X20S-D

–

Cisco uBR-LCP2-MC16C

–

Cisco uBR-LCP2-MC16E

–

Cisco uBR-LCP2-MC16S

–

Cisco uBR-LCP2-MC28C

• WAN interface uplink line cards (minimum of one, maximum of four):

–

Cisco uBR10-1GE Gigabit Ethernet (GigE)

–

Cisco uBR10-1OC12/P-SMI Packet Over SONET (POS)

Chapter 1 Basic Troubleshooting Tasks and Startup Issues

–

Cisco uBR10-SRP-OC12SML Dynamic Packet Transport (DPT) Spatial Reuse Protocol (SRP)

–

Cisco uBR10-OC-48 DPT/POS

• Timing, Communication and Control Plus (TCC+) card (minimum of one, maximum of two)

If an installed item does not appear in the command output, make sure the item is properly installed. For example, make sure the line cards are fully inserted into the slot and the captive screws are tightened. If the problem persists, consult the Cisco uBR10012 release notes to confirm that this is not an existing problem. Finally, you should consider replacing the component.

The following example shows typical output from the show hardware command:

UBR10K-ROUTER1#show hardware

Cisco Internetwork Operating System Software IOS (tm) 10000 Software (UBR10K-P6-M), Released Version 12.2(8)BC2 Copyright (c) 1986-2002 by cisco Systems, Inc. Compiled Mon 12-Aug-02 17:53 slacmar Image text-base: 0x60008940, data-base: 0x61730000

ROM: System Bootstrap, Version 12.0(9r)SL2, RELEASE SOFTWARE (fc1) BOOTLDR: 10000 Software (C10K-EBOOT-M), Version 12.0(17)ST, RELEASE SOFTWARE)

UBR10K-ROUTER1 uptime is 3 weeks, 21 hours, 43 minutes System returned to ROM by power-on System restarted at 13:00:51 PDT Mon Dec 13 2003 System image file is “disk0:/ubr10k-k9p6-mz”

cisco uBR10000 (PRE1-RP) processor with 425983K/98304K bytes of memory. Processor board ID DEFGHIJKLMN R7000 CPU at 262Mhz, Implementation 39, Rev 2.1, 256KB L2, 2048KB L3 Cache Backplane version 1.0, 8 slot

1-2

Last reset from power-on PXF processor tmc0 is running. PXF processor tmc1 is running. 2 TCCplus card(s) 1 FastEthernet/IEEE 802.3 interface(s)

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Chapter 1 Basic Troubleshooting Tasks and Startup Issues

2 Gigabit Ethernet/IEEE 802.3 interface(s) 4 Cable Modem network interface(s) 509K bytes of non-volatile configuration memory.

125440K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes). 32768K bytes of Flash internal SIMM (Sector size 256KB). Configuration register is 0x2102

UBR10K-ROUTER1#

Displaying the Cisco IOS Software Version

Use the show version command to confirm that the router is running the proper version of Cisco IOS software and has a sufficient amount of system memory. The command also reports the system uptime and the method by which the system was powered up.

In the following sample of output from the show version command, some of the information that may be useful for troubleshooting appears in bold type:

UBR10K-ROUTER1# show version

Displaying the Cisco IOS Software Version

Cisco Internetwork Operating System Software

IOS (tm) 10000 Software (UBR10K-P6-M), Released Version 12.2(8)BC2

ROM: System Bootstrap, Version 12.0(9r)SL1, RELEASE SOFTWARE (fc1) BOOTFLASH: 10000 Software (C10K-EBOOT-M), Released Version 12.2(1)

UBR10K-ROUTER1 uptime is 3 weeks, 21 hours, 43 minutes System returned to ROM by power-on

System restarted at 13:00:51 PDT Mon Dec 13 2003

cisco uBR10000 (PRE-1-RP) processor with 393215K/131072K bytes of memory. Processor board ID DEFGHIJKLMN R7000 CPU at 262Mhz, Implementation 39, Rev 2.1, 256KB L2, 2048KB L3 Cache Backplane version 1.0, 8 slot

Last reset from power-on

PXF processor tmc0 is running. PXF processor tmc1 is running. 2 TCCplus card(s) 1 FastEthernet/IEEE 802.3 interface(s) 2 Gigabit Ethernet/IEEE 802.3 interface(s) 4 Cable Modem network interface(s) 509K bytes of non-volatile configuration memory.

125440K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes). 32768K bytes of Flash internal SIMM (Sector size 256KB). Configuration register is 0x2102

OL-1237-01

UBR10K-ROUTER1#

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

1-3

Chapter 1 Basic Troubleshooting Tasks and Startup Issues

Displaying System Environment Information

Use the show environment command to display the basic system environment status, to verify the following:

• Make sure the system operating temperature is equal to or less than 41° F at the inlet and 104° F

degrees at the core (5° C and 40° C).

• That the fan assembly module is installed in the chassis and operating properly.

• Report the operational status of the PEMs and blower

If the operating temperature is not between 41° F and 104° F, refer to the “Fan Assembly Module Faults”

section on page 2-7.

The following example is sample output from the show environment command for a system with two DC PEMs installed:

UBR10K-ROUTER1# show environment

Temperature normal:chassis inlet measured at 29C/84F Temperature normal:chassis core measured at 39C/98F Fan: OK Power Entry Module 0 type DC status: OK Power Entry Module 0 Power: 555w Power Entry Module 0 Voltage: 62v Power Entry Module 1 type DC status: OK Power Entry Module 1 Power: 558w Power Entry Module 1 Voltage: 62v

UBR10K-ROUTER1#

Hardware Troubleshooting Flowchart

Use Figure 1-1 to determine which component of your Cisco uBR10012 router is malfunctioning.

Figure 1-1 describes a series of hardware dependent startup events that must take place for a

Cisco uBR10012 router to allow the passage of IP traffic. At each main point of the flowchart, there are pointers to the chapters in this guide that describe how to troubleshoot individual pieces of hardware.

Note This flowchart does not address software configuration problems.

1-4

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Chapter 1 Basic Troubleshooting Tasks and Startup Issues

Figure 1-1 Hardware Troubleshooting Flowchart

Turn

PEM

Cisco uBR10012 System Startup Sequence

*Miswire

LED

off

Yes

PEM

Power OK

LED on

Yes

PRE

Status

LEDs OK

Yes

ICC+

Status

LEDs OK

Yes

Line card

LEDs on

Yes

System

startup

successful

Correct

input

wiring

Troubleshoot

PEM

Reseat

PRE

and restart

Reseat

TCC+

Reseat

line card

and restart

PEM

Power OK

LED on

Yes

PRE

status LEDs

OK?

Yes

ICC+

status LEDs

OK?

Yes

Line

card LEDs

Yes

See section

See appropriate

"PEM Faults"

See section

"PRE Module

Faults"

See section

"Troubleshooting

TCC+"

line card fault

section

Obtain

technical

assistance

103381

Cisco uBR10012 System Startup Sequence

Table 1-1 describes the visible sequence of events that occur during a typical Cisco uBR10012 power up.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

1-5

Chapter 1 Basic Troubleshooting Tasks and Startup Issues

Cisco uBR10012 System Startup Sequence

Table 1-1 Cisco\ uBR10000 Series System Startup Sequence

Startup Event Event Description

PEM is powered off The Fault LED on each PEM is lit yellow to indicate that power is being supplied to the PEM

but that the router is not turned on.

Power on the Cisco uBR10012 router

Cisco IOS software loads

1. The Power LED on each PEM is lit green.

2. The yellow Critical, Major, and Minor alarm and Fail LEDs illuminate for about 2 seconds.

3. The alphanumeric display on the active PRE-1 module counts up through a range of

numbers from 1111 to 9999 (1111, 2222, and so on).

4. The alpha numeric display counts up through a sequence of letters from AAA to CCC

(AAA, BBB, and CCC).

5. The message ROM DONE appears on the alphanumeric display.

Note If the system is not configured to auto boot, it stops at the ROM DONE message. The

console displays a

6. The Power LED on each TCC+ card turns green. The Status LED on each TCC+ lights

rommon> prompt.

yellow. After a few seconds, the Status LED on the primary TCC+ card lights green, and the Status LED on the backup TCC+ card begins blinking green.

1. If the system is set to boot from the slot0: file system, the green slot LED lights.

2. The message BOOT IMGE appears on the alphanumeric display on the active PRE-1

module.

3. The console displays a series of pound signs (#) as the IOS software image is decompressed.

4. The following messages appear on the alphanumeric display on the active PRE-1 module.

• IOS STRT

• IOS EXC

• IOS FPGA

• IOS FPOK

• IOS FILE

• IOS STBY

• IOS DRVR

• IOS LIB

• IOS MGMT

• IOS CONF

5. The console displays the bootup screen, followed by the prompt:

Press RETURN to get started!

6. The message IOS RUN appears in the alphanumeric display on the active PRE-1 module. In

a redundant configuration, the message IOS STBY appears on the alphanumeric display of the standby PRE-1 module.

If the boot process fails, no console access is available. If you cannot boot the Cisco uBR10012 router, call Cisco TAC.

1-6

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

PEM Faults and Fan Assembly Failures

The following sections provide methods for troubleshooting faults involving the Cisco uBR10012 DC Power Entry Modules (PEMs), the optional 2400W AC-input power shelf, and fan assembly module. This chapter contains the following major sections:

• AC PEM Faults, page 2-1

• DC PEM Faults, page 2-3

• 2400W AC-Input Power Shelf, page 2-5

• Other Electrical Problems, page 2-6

• Fan Assembly Module Faults, page 2-7

AC PEM Faults

CHAPTER

On the Cisco uBR10012 router, two AC PEMs are installed in a redundant configuration, which allows one AC PEM to fail without affecting system operations. A single PEM can power the router for sufficient time to request and install a new PEM to replace the one that failed.

Tip To quickly check the functional status of your PEMs, use the show environment command.

AC PEM faults can occur for the following reasons:

• PEM failure

• Invalid AC-input power being supplied by the power source

• Backplane interface failures or damage

Figure 2-1 illustrates the AC PEM and its indicators. Table 2-1 describes the indicators.

OL-1237-01

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

2-1

AC PEM Faults

Figure 2-1 AC PEM Front Panel

POWER

FAULT

AC power cord clips

AC power plug

Chapter 2 PEM Faults and Fan Assembly Failures

AC power switch

62520

Table 2-1 AC PEM LEDs

LED Color Description

Power Green The PEM is on, is receiving power from the AC power source, and is providing

power to the Cisco uBR10012 chassis (normal operations).

Fault Yellow Indicates that AC-input power is being received by the PEM, but that the PEM is

not supplying power to the chassis, typically because the PEM’s power switch is turned to the standby position.

If the Fault LED is lit when the power switch is in the ON position, the PEM is not operating correctly.

Table 2-2 lists the AC PEM fault symptoms and corrective actions.

Table 2-2 AC PEM Fault Symptoms and Corrective Action

Fault Symptom Corrective Action

Green LED on PEM fails to light

1. Make sure the power switch on the PEM is turned to the ON position.

2. Make sure the PEM is properly seated and that its captive screws have been

tightened.

2-2

3. Make sure that the AC-input power cord is securely plugged into the power

plug on the front panel of the PEM. Secure the cord in the clips to ensure the plug is not accidentally pulled out.

4. Check the external power source and verify that the AC-input power cord is

correctly connected to the power outlet.

5. Move the PEM to the other PEM slot. If the PEM still fails, replace it.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Chapter 2 PEM Faults and Fan Assembly Failures

Table 2-2 AC PEM Fault Symptoms and Corrective Action (continued)

DC PEM Faults

PEM experiences problems in one slot but operates normally in a different slot

Fault LED is lit yellow

1. Ensure that the input power to both slots is correct.

2. Verify that no connections have been made to the DC-power connectors

underneath each PEM.

3. If the problem persists, contact Cisco TAC.

1. Verify that no connections have been made to the DC-power connectors

underneath each PEM.

2. Verify that the PEM is fully inserted into the power bay and that its captive

screws have been tightened.

3. Check to see if the power switch is set to the standby position. If so, set the

switch to the ON position.

4. If the problem persists, flip the power switch on the PEM to the standby

position, wait several seconds, and then back to the ON position.

5. Replace PEM with a known good replacement.

6. Contact Cisco TAC.

Tip Securely tighten the captive screws on your PEMs to prevent heightened levels of electromagnetic

interference.

DC PEM Faults

On the Cisco uBR10012 router, two DC PEMs are in a redundant configuration, which allows one DC PEM to fail without affecting system operations. A single PEM can usually power the router for sufficient time to request and install a new PEM to replace the one that failed.

Tip To quickly check the functional status of your PEMs, use the show environment command.

DC PEM faults can occur for the following reasons:

• PEM failure

• Reversed power cables

• Backplane interface failures or damage

Two models of the DC PEM exist.

• Figure 2-2 shows the front panel of the original DC PEM (UBR10-PWR-DC) that was initially

produced for the Cisco uBR10012 router.

• Figure 2-3 shows the front panel of the DC PEM that is currently being produced for the

Cisco uBR10012 router. The new model of the DC PEM (UBR10-PWR-DC-M) is identical in form and function to the first version, except that it includes a connector on the front panel for connecting to the alarm status connectors on the optional 2400-watt AC-input power shelf.

Table 2-3 describes the indicators on the front panel of both models of DC PEM.

OL-1237-01

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

2-3

DC PEM Faults

Chapter 2 PEM Faults and Fan Assembly Failures

Figure 2-2 DC PEM Front Panel (original model, UBR10-PWR-DC)

POWER MISWIRE FAU LT

56480

Figure 2-3 DC PEM Front Panel (current model with alarm connector, UBR10-PWR-DC-M)

POW

IRE

ISW

M FAULT

2-4

62518

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Chapter 2 PEM Faults and Fan Assembly Failures

Table 2-3 DC PEM LEDs

LED Description

Power (green) PEM is powered on and is operational.

Fault (yellow) PEM is not operating correctly or the circuit breaker is in the OFF position.

Miswire (yellow) Input DC power cables are wired incorrectly and should be reversed.

Table 2-4 lists the DC PEM fault symptoms and corrective actions.

Table 2-4 DC PEM Fault Symptoms and Corrective Action

Fault Symptom Corrective Action

Green LED on PEM fails to light

2400W AC-Input Power Shelf

1. Make sure the circuit breaker on the PEM is turned on.

2. Make sure the PEM is properly seated and screwed in place.

3. Make sure power leads are properly connected to power connectors on the

backplane. If connections are loose or their polarity is reversed, the chassis does not receive power.

4. Check the external power source.

5. Move the PEM to the other PEM slot. If the PEM still fails, replace it.

PEM experiences problems in one slot but operates

1. Ensure that the input power to both slots is correct.

2. If the problem persists, contact Cisco TAC.

normally in a different slot

Fault LED is lit yellow

Miswire LED is lit yellow

1. Check to see if the circuit breaker (on/off switch) has tripped. If it has,

return the switch to the ON position.

2. Replace PEM with a known good replacement.

3. Contact Cisco TAC.

If the MISWIRE LED is on, the power cables are reversed. Power off the PEM and the external power source and reconnect the wires correctly. See the Cisco uBR10012 Universal Broadband Router Hardware Installation Guide.

Tip Securely tighten the captive screws on your PEMs to prevent heightened levels of electromagnetic

interference.

2400W AC-Input Power Shelf

OL-1237-01

The 2400W AC-input power shelf converts AC-output power from an external AC power source into DC power that is suitable for powering the Cisco uBR10012 router. The power shelf supplies –54 VDC output power to the two DC PEMs in the Cisco uBR10012 chassis.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

2-5

Fan Assembly Module Faults

The fan assembly module is critical to the operation of the Cisco uBR10012 router because it allows the router to maintain proper operating temperatures. Severe overheating can result in system failure, so a fan assembly module must always be present in the chassis while the router is operating.

Figure 2-5 shows the fan assembly module front panel and its LED indicators.

Fan Assembly Module Faults

Figure 2-5 Fan Assembly Module

FANS OK

SINGLE FAN FAILURE

MULTIPLE FAN FAILURE

Fan assembly

CISCO 10000

A UX

TIVIT

THE

TIVITY

LINK

ETH

ERN

LIN

56479

The Cisco uBR10012 fan assembly module contains four fans in a redundant configuration. One fan can fail without affecting system operations. If more than one fan fails, however, the fan assembly module must be replaced immediately to avoid overheating the system.

The fan assembly module draws air in from the bottom front of the Cisco uBR10012 router, through the air filter at the bottom of the front bezel. The air is drawn up through the line cards, and then exits through the vents at the top rear of the router.

OL-1237-01

Figure 2-6 shows the air circulation pattern of the Cisco uBR10012 router when two DC PEMs are

installed. The air flow when two AC PEMs are installed is similar. The front bezel is not shown for clarity.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

2-7

Fan Assembly Module Faults

Figure 2-6 Fan Assembly Air Circulation Pattern

Chapter 2 PEM Faults and Fan Assembly Failures

C O

S O

L E

A U

A C

I V

E R

SLOT 0

SLOT 1

SLOT 0

SLOT 1

C O

R I T

L A J

O R

PERFORMANCE ROUTING ENGINE

I N O

T A T

A I L

R N

L E

E T

PERFORMANCE ROUTING ENGINE

ISW

IRE

ULT

ISW

FAU

N S

U X

C T

I V

T H

I N

A C

R IT

I C

L A J

O R

T A

T U

A I

56430

The LEDs on the front panel indicate the current status of the fans. Tab le 2-6 lists the fan assembly module fault indications and recommended actions.

2-8

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

+ 60 hidden pages

Cisco Systems UBR10012 User Manual

CONTENTS

Preface

Purpose

Audience

Document Organization

Related Documentation

Obtaining Documentation

Cisco.com

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco TAC Website

Opening a TAC Case

Obtaining Additional Publications and Information

TAC Case Priority Definitions

Basic Troubleshooting Tasks and Startup Issues

Basic Troubleshooting Checklist

Confirming the Hardware Installation

Displaying System Environment Information

Hardware Troubleshooting Flowchart

Cisco uBR10012 System Startup Sequence

PEM Faults and Fan Assembly Failures

AC PEM Faults

DC PEM Faults

2400W AC-Input Power Shelf

Other Electrical Problems

Fan Assembly Module Faults