Interface and Hardware Component Configuration Guide for Cisco
NCS 5500 Series Routers, IOS XR Release 6.1.x
First Published: 2016-08-12
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Information About Configuring Management Ethernet Interfaces 16
Configuring Ethernet Interfaces 17
Configuring Gigabit Ethernet Interfaces 17
Information About Configuring Ethernet 21
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Contents
Default Configuration Values for 100-Gigabit Ethernet 21
Ethernet MTU 21
CHAPTER 5
Configuring Ethernet OAM 23
Configuring Ethernet OAM 23
Information About Configuring Ethernet OAM 24
Ethernet Link OAM 24
Neighbor Discovery 24
Link Monitoring 25
MIB Retrieval 25
Miswiring Detection (Cisco-Proprietary) 25
SNMP Traps 25
Ethernet CFM 25
Maintenance Domains 26
Services 28
Maintenance Points 28
MIP Creation 28
MEP and CFM Processing Overview 29
CFM Protocol Messages 31
Continuity Check (IEEE 802.1ag and ITU-T Y.1731) 31
Loopback (IEEE 802.1ag and ITU-T Y.1731) 34
Linktrace (IEEE 802.1ag and ITU-T Y.1731) 34
Configurable Logging 36
Flexible VLAN Tagging for CFM 36
How to Configure Ethernet OAM 37
Configuring Ethernet Link OAM 37
Configuring an Ethernet OAM Profile 38
Attaching an Ethernet OAM Profile to an Interface 43
Configuring Ethernet OAM at an Interface and Overriding the Profile
Configuration 45
Verifying the Ethernet OAM Configuration 46
Configuring Ethernet CFM 47
Configuring a CFM Maintenance Domain 47
Configuring Services for a CFM Maintenance Domain 48
Enabling and Configuring Continuity Check for a CFM Service 50
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Configuring Automatic MIP Creation for a CFM Service 52
Configuring Cross-Check on a MEP for a CFM Service 53
Configuring Other Options for a CFM Service 55
Configuring CFM MEPs 58
Configuring Y.1731 AIS 60
Configuring AIS in a CFM Domain Service 60
Configuring AIS on a CFM Interface 62
Configuring Flexible VLAN Tagging for CFM 63
Verifying the CFM Configuration 64
Troubleshooting Tips 65
Configuration Examples for Ethernet OAM 66
Configuration Examples for EOAM Interfaces 66
Configuring an Ethernet OAM Profile Globally: Example 66
Configuring Ethernet OAM Features on an Individual Interface: Example 67
Configuring Ethernet OAM Features to Override the Profile on an Individual Interface:
Example 67
Clearing Ethernet OAM Statistics on an Interface: Example 68
Enabling SNMP Server Traps on a Router: Example 68
Configuration Examples for Ethernet CFM 68
Ethernet CFM Domain Configuration: Example 68
Ethernet CFM Service Configuration: Example 68
Flexible Tagging for an Ethernet CFM Service Configuration: Example 69
Continuity Check for an Ethernet CFM Service Configuration: Example 69
MIP Creation for an Ethernet CFM Service Configuration: Example 69
Cross-check for an Ethernet CFM Service Configuration: Example 69
Other Ethernet CFM Service Parameter Configuration: Example 69
MEP Configuration: Example 69
Ethernet CFM Show Command: Examples 70
AIS for CFM Configuration: Examples 72
CHAPTER 6
AIS for CFM Show Commands: Examples 73
show ethernet cfm interfaces ais Command: Example 73
show ethernet cfm local meps Command: Examples 74
show ethernet cfm local meps detail Command: Example 75
Integrated Routing and Bridging 77
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Bridge-Group Virtual Interface 78
Supported Features on a BVI 78
BVI Interface and Line Protocol States 78
Prerequisites for Configuring IRB 79
Restrictions for Configuring IRB 79
How to Configure IRB 80
Configuring the Bridge Group Virtual Interface 80
Configuration Guidelines 80
Configuring the Layer 2 AC Interfaces 82
Configuring a Bridge Group and Assigning Interfaces to a Bridge Domain 83
Associating the BVI as the Routed Interface on a Bridge Domain 85
Displaying Information About a BVI 86
Additional Information on IRB 87
CHAPTER 7
Packet Flows Using IRB 87
Packet Flows When Host A Sends to Host B on the Bridge Domain 88
Packet Flows When Host A Sends to Host C From the Bridge Domain to a Routed
Interface 88
Packet Flows When Host C Sends to Host B From a Routed Interface to the Bridge
Domain 88
Configuration Examples for IRB 89
Basic IRB Configuration: Example 89
IPv4 Addressing on a BVI Supporting Multiple IP Networks: Example 89
IRB With BVI and VRRP Configuration: Example 89
Configuring Link Bundling 91
Features and Compatible Characteristics of Ethernet Link Bundles 92
Configuring Ethernet Link Bundles 93
Configuring LACP Fallback 97
Configuring EFP Load Balancing on an Ethernet Link Bundle 98
VLANs on an Ethernet Link Bundle 100
Configuring VLAN over Bundles 101
102
LACP Short Period Time Intervals 105
Configuring the Default LACP Short Period Time Interval 106
Configuring Custom LACP Short Period Time Intervals 108
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Configuring VPWS Cross-Connects in MC-LAG 114
Configuring VPLS in MC-LAG 116
Information About Configuring Link Bundling 119
IEEE 802.3ad Standard 119
Link Bundle Configuration Overview 120
Link Switchover 120
LACP Fallback 120
Failure Cases 121
CHAPTER 8
Configuring Traffic Mirroring 123
Introduction to Traffic Mirroring 123
Traffic Mirroring Types 124
Restrictions 124
How to Configure Traffic Mirroring 125
Configuring Remote Traffic Mirroring 125
Attaching the Configurable Source Interface 127
Configuring UDF-Based ACL for Traffic Mirroring 129
Additional Information on Traffic Mirroring 131
Traffic Mirroring Terminology 131
Characteristics of the Source Port 131
Characteristics of the Monitor Session 132
Characteristics of the Destination Port 133
Traffic Mirroring Configuration Examples 133
Traffic Mirroring with Physical Interfaces (Local): Example 133
Viewing Monitor Session Status: Example 134
CHAPTER 9
Troubleshooting Traffic Mirroring 135
Verifying UDF-based ACL 137
Configuring Virtual Loopback and Null Interfaces 139
Information About Configuring Virtual Interfaces 139
Virtual Loopback Interface Overview 139
Prerequisites for Configuring Virtual Interfaces 140
Configuring Virtual Loopback Interfaces 140
Null Interface Overview 142
Configuring Null Interfaces 142
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Configuring Virtual IPv4 Interfaces 144
CHAPTER 10
CHAPTER 11
Configuring 802.1Q VLAN Interfaces 147
How to Configure 802.1Q VLAN Interfaces 147
Configuring 802.1Q VLAN Subinterfaces 148
Verification 150
Configuring an Attachment Circuit on a VLAN 150
Removing an 802.1Q VLAN Subinterface 152
Information About Configuring 802.1Q VLAN Interfaces 153
Subinterfaces 153
Subinterface MTU 154
EFPs 154
Layer 2 VPN on VLANs 154
Configuring GRE Tunnels 155
Configuring GRE Tunnels 155
IP-in-IP De-capsulation 156
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Interface and Hardware Component Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release
6.1.x
Preface
The Interface and Hardware Component Configuration Guide for Cisco NCS 5500 Series Routers provides
information and procedures related to router interface and hardware configuration.
The preface contains the following sections:
Changes to This Document, page ix
•
Obtaining Documentation and Submitting a Service Request, page ix
•
Changes to This Document
This table lists the technical changes made to this document since it was first released.
Table 1: Changes to This Document
SummaryDate
Added ERSPAN and LACP Fallback features.May 2017
February 2017
Added IP-in-IP De-capsulation feature for Release
6.1.3
Initial release of this document.November 2016
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information,
see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco
technical documentation, at: http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html
Subscribe to What's New in Cisco Product Documentation, which lists all new and revised Cisco technical
documentation, as an RSS feed and deliver content directly to your desktop using a reader application. The
RSS feeds are a free service.
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Obtaining Documentation and Submitting a Service Request
Preface
Interface and Hardware Component Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release
6.1.x
x
New and Changed Feature Information
This table summarizes the new and changed feature information for the Interface and Hardware Component
Configuration Guide for Cisco NCS 5500 Series Routers , and tells you where they are documented.
New and Changed Information, page 1
•
New and Changed Information
Table 2: New and Changed Features
CHAPTER 1
Where DocumentedChanged in ReleaseDescriptionFeature
Release 6.1.3This feature was introduced.Integrated Routing and Bridging
Release 6.1.31This feature was introduced.ERSPAN
Release 6.1.31This feature was introduced.LACP Fallback
Configuring Integrated and
Bridging chapter
Configuring Traffic Monitoring
chapter
Configuring Link Bundling
chapter
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New and Changed Information
New and Changed Feature Information
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CHAPTER 2
Preconfiguring Physical Interfaces
This module describes the preconfiguration of physical interfaces.
Preconfiguration is supported for these types of interfaces and controllers:
100-Gigabit Ethernet
•
Management Ethernet
•
Preconfiguration allows you to configure line cards before they are inserted into the router. When the cards
are inserted, they are instantly configured. The preconfiguration information is created in a different system
database tree (known as the preconfiguration directory on the route processor), rather than with the regularly
configured interfaces.
There may be some preconfiguration data that cannot be verified unless the line card is present, because the
verifiers themselves run only on the line card. Such preconfiguration data is verified when the line card is
inserted and the verifiers are initiated. A configuration is rejected if errors are found when the configuration
is copied from the preconfiguration area to the active area.
One Gigabit Ethernet interface is not supported. Only physical interfaces can be preconfigured.Note
Prerequisites for Preconfiguring Physical Interfaces, page 4
•
Benefits of Interface Preconfiguration, page 4
•
How to Preconfigure Physical Interfaces, page 4
•
Information About Preconfiguring Physical Interfaces, page 6
•
Physical Interface Preconfiguration Overview
Preconfiguration is the process of configuring interfaces before they are present in the system. Preconfigured
interfaces are not verified or applied until the actual interface with the matching location (rack/slot/module)
is inserted into the router. When the anticipated line card is inserted and the interfaces are created, the precreated
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Prerequisites for Preconfiguring Physical Interfaces
configuration information is verified and, if successful, immediately applied to the running configuration of
the router.
Preconfiguring Physical Interfaces
Note
Note
When you plug the anticipated line card in, make sure to verify any preconfiguration with the appropriate
show commands.
Use the show run command to see interfaces that are in the preconfigured state.
We recommend filling out preconfiguration information in your site planning guide, so that you can
compare that anticipated configuration with the actual preconfigured interfaces when that card is installed
and the interfaces are up.
Tip Use the commit best-effort command to save the preconfiguration to the running configuration file.
Tip
The commit best-effort command merges the target configuration with the running configuration and
commits only valid configuration (best effort). Some configuration might fail due to semantic errors, but
the valid configuration still comes up.
Prerequisites for Preconfiguring Physical Interfaces
Before preconfiguring physical interfaces, ensure that this condition is met:
Preconfiguration drivers and files are installed. Although it may be possible to preconfigure physical
•
interfaces without a preconfiguration driver installed, the preconfiguration files are required to set the
interface definition file on the router that supplies the strings for valid interface names.
Benefits of Interface Preconfiguration
Preconfigurations reduce downtime when you add new cards to the system. With preconfiguration, the new
line card can be instantly configured and actively running during line card bootup.
Another advantage of performing a preconfiguration is that during a card replacement, when the line card is
removed, you can still see the previous configuration and make modifications.
How to Preconfigure Physical Interfaces
This task describes only the most basic preconfiguration of an interface.
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Preconfiguring Physical Interfaces
SUMMARY STEPS
DETAILED STEPS
How to Preconfigure Physical Interfaces
configure
1.
interface preconfigure type interface-path-id
2.
Use one of the following commands:
3.
ipv4 address ip-address subnet-mask
•
ipv4 address ip-address/prefix
•
Configure additional interface parameters, as described in this manual in the configuration chapter that
4.
applies to the type of interface that you are configuring.
Enters interface preconfiguration mode for an interface, where type specifies the supported interface type that you want
to configure and interface-path-id specifies the location where the interface will be located in rack/slot/module/port
notation.
Configure additional interface parameters, as described in this manual in the configuration chapter that applies to the
type of interface that you are configuring.
end or commit best-effort
Example:
RP/0/RP0/CPU0:router(config-if-pre)# end
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Information About Preconfiguring Physical Interfaces
or
RP/0/RP0/CPU0:router(config-if-pre)# commit
Saves configuration changes.
• When you issue the end command, the system prompts you to commit changes: Uncommitted changes found,
commit them before exiting (yes/no/cancel)?
Entering yes saves configuration changes to the running configuration file, exits the configuration session, and
•
returns the router to EXEC mode.
Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration
•
changes.
Entering cancel leaves the router in the current configuration session without exiting or committing the configuration
•
changes.
Use the commit best-effort command to save the configuration changes to the running configuration file and
•
remain within the configuration session. The commit best-effort command merges the target configuration with
the running configuration and commits only valid changes (best effort). Some configuration changes might fail
due to semantic errors.
Preconfiguring Physical Interfaces
Step 6
show running-config
Example:
RP/0/RP0/CPU0:router# show running-config
(Optional) Displays the configuration information currently running on the router.
This example shows how to preconfigure a basic Ethernet interface:
Information About Preconfiguring Physical Interfaces
To preconfigure interfaces, you must understand these concepts:
Use of the Interface Preconfigure Command
Interfaces that are not yet present in the system can be preconfigured with the interface preconfigure command
in global configuration mode.
The interface preconfigure command places the router in interface configuration mode. Users should be able
to add any possible interface commands. The verifiers registered for the preconfigured interfaces verify the
configuration. The preconfiguration is complete when the user enters the end command, or any matching exit
or global configuration mode command.
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Preconfiguring Physical Interfaces
Use of the Interface Preconfigure Command
Note
Note
It is possible that some configurations cannot be verified until the line card is inserted.
Do not enter the no shutdown command for new preconfigured interfaces, because the no form of this
command removes the existing configuration, and there is no existing configuration.
Users are expected to provide names during preconfiguration that will match the name of the interface that
will be created. If the interface names do not match, the preconfiguration cannot be applied when the interface
is created. The interface names must begin with the interface type that is supported by the router and for which
drivers have been installed. However, the slot, port, subinterface number, and channel interface number
information cannot be validated.
Specifying an interface name that already exists and is configured (or an abbreviated name like Hu0/3/0/0)
is not permitted.
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Use of the Interface Preconfigure Command
Preconfiguring Physical Interfaces
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CHAPTER 3
Advanced Configuration and Modification of the
Management Ethernet Interface
This module describes the configuration of Management Ethernet interfaces.
Before you can use Telnet to access the router through the LAN IP address, you must set up a Management
Ethernet interface and enable Telnet servers.
Note
Although the Management Ethernet interfaces on the system are present by default, the user must configure
these interfaces to use them for accessing the router, using protocols and applications such as Simple
Network Management Protocol (SNMP), HTTP, extensible markup language (XML), TFTP, Telnet, and
command-line interface (CLI).
Prerequisites for Configuring Management Ethernet Interfaces, page 9
Information About Configuring Management Ethernet Interfaces, page 16
•
Prerequisites for Configuring Management Ethernet Interfaces
Before performing the Management Ethernet interface configuration procedures that are described in this
chapter, be sure that the following tasks and conditions are met:
You have performed the initial configuration of the Management Ethernet interface.
•
You know how to apply the generalized interface name specification rack/slot/module/port.
•
Note
For transparent switchover, both active and standby Management Ethernet interfaces are expected to be
physically connected to the same LAN or switch.
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Advanced Configuration and Modification of the Management Ethernet Interface
Perform this task to configure a Management Ethernet interface. This procedure provides the minimal
configuration required for the Management Ethernet interface.
RP/0/RP0/CPU0:router(config-if)# no shutdown
RP/0/RP0/CPU0:router(config-if)# commit
RP/0/RP0/CPU0:router:Mar 26 01:09:28.685 :ifmgr[190]:%LINK-3-UPDOWN :Interface
MgmtEth0/RP0/CPU0/0, changed state to Up
RP/0/RP0/CPU0:router(config-if)# end
RP/0/RP0/CPU0:router# show interfaces MgmtEth 0/RP0/CPU0/0
MgmtEth0/RP0/CPU0/0 is up, line protocol is up
Interface state transitions: 3
Hardware is Management Ethernet, address is 1005.cad8.4354 (bia 1005.cad8.4354)
Internet address is 1.76.18.150/16
MTU 1488 bytes, BW 1000000 Kbit (Max: 1000000 Kbit)
reliability 255/255, txload 0/255, rxload 0/255
Encapsulation ARPA,
Full-duplex, 1000Mb/s, 1000BASE-T, link type is autonegotiation
loopback not set,
Last link flapped 00:00:59
ARP type ARPA, ARP timeout 04:00:00
Last input 00:00:00, output 00:00:02
Last clearing of "show interface" counters never
5 minute input rate 4000 bits/sec, 3 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
21826 packets input, 4987886 bytes, 0 total input drops
0 drops for unrecognized upper-level protocol
Received 12450 broadcast packets, 8800 multicast packets
Fri Nov 4 16:48:14.372 IST
GigabitEthernet0/2/0/0 is Up, ipv6 protocol is Up, Vrfid is default (0x60000000)
IPv6 is enabled, link-local address is fe80::d1:1eff:fe2b:baf
Global unicast address(es):
5::d1:1eff:fe2b:baf [AUTO CONFIGURED], subnet is 5::/64 <<<<<< auto configured address
Joined group address(es): ff02::1:ff2b:baf ff02::2 ff02::1
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Advanced Configuration and Modification of the Management Ethernet Interface
Modifying the MAC Address for a Management Ethernet Interface
MTU is 1514 (1500 is available to IPv6)
ICMP redirects are disabled
ICMP unreachables are enabled
ND DAD is enabled, number of DAD attempts 1
ND reachable time is 0 milliseconds
ND cache entry limit is 1000000000
ND advertised retransmit interval is 0 milliseconds
Hosts use stateless autoconfig for addresses.
Outgoing access list is not set
Inbound common access list is not set, access list is not set
Table Id is 0xe0800000
Complete protocol adjacency: 0
Complete glean adjacency: 0
Incomplete protocol adjacency: 0
Incomplete glean adjacency: 0
Dropped protocol request: 0
Dropped glean request: 0
Modifying the MAC Address for a Management Ethernet Interface
Perform this task to configure the MAC layer address of the Management Ethernet interfaces for the RPs.
Perform this task to verify configuration modifications on the Management Ethernet interfaces.
SUMMARY STEPS
show interfaces MgmtEth interface-path-id
1.
show running-config interface MgmtEth interface-path-id
2.
DETAILED STEPS
Step 1
show interfaces MgmtEth interface-path-id
Step 2
Example:
RP/0/RP0/CPU0:router# show interfaces MgmtEth 0/RP0/CPU0/0
Displays the Management Ethernet interface configuration.
show running-config interface MgmtEth interface-path-id
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Advanced Configuration and Modification of the Management Ethernet Interface
Information About Configuring Management Ethernet Interfaces
Example:
RP/0/RP0/CPU0:router# show running-config interface MgmtEth 0/RP0/CPU0/0
Displays the running configuration.
Information About Configuring Management Ethernet Interfaces
To configure Management Ethernet interfaces, you must understand the following concept:
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CHAPTER 4
Configuring Ethernet Interfaces
This module describes the configuration of Ethernet interfaces.
The distributed 10-Gigabit, 40-Gigabit, 100-Gigabit Ethernet architecture delivers network scalability and
performance, while enabling service providers to offer high-density, high-bandwidth networking solutions.
These solutions are designed to interconnect the router with other systems in POPs, including core and edge
routers and Layer 2 and Layer 3 switches.
Configuring Gigabit Ethernet Interfaces, page 17
•
Information About Configuring Ethernet, page 21
•
Configuring Gigabit Ethernet Interfaces
Use this procedure to create a basic Ethernet interface configuration.
SUMMARY STEPS
DETAILED STEPS
Step 1
show version
show version
1.
show interfaces [HundredGigE | ] interface-path-id
Enters interface configuration mode and specifies the Ethernet interface name and notation rack/slot/module/port. Possible
interface types for this procedure are:
HundredGigE
•
TenGigE
•
Note
The example indicates a 100-Gigabit Ethernet interface in the line card
RP/0/RP0/CPU0:router(config-if)# mtu 1448
RP/0/RP0/CPU0:router(config-if)# mac-address 0001.2468.ABCD
RP/0/RP0/CPU0:router(config-if)# no shutdown
RP/0/RP0/CPU0:router(config-if)# end
Uncommitted changes found, commit them? [yes]: yes
Configuring Ethernet Interfaces
RP/0/RP0/CPU0:router# show interfaces HundredGigE 0/5/0/24
HundredGigE0/5/0/24 is up, line protocol is up
Interface state transitions: 1
Hardware is HundredGigE, address is 6219.8864.e330 (bia 6219.8864.e330)
Internet address is 3.24.1.1/24
MTU 9216 bytes, BW 100000000 Kbit (Max: 100000000 Kbit)
reliability 255/255, txload 3/255, rxload 3/255
Encapsulation ARPA,
Full-duplex, 100000Mb/s, link type is force-up
output flow control is off, input flow control is off
Carrier delay (up) is 10 msec
loopback not set,
Last link flapped 10:05:07
ARP type ARPA, ARP timeout 04:00:00
Last input 00:08:56, output 00:00:00
Last clearing of "show interface" counters never
5 minute input rate 1258567000 bits/sec, 1484160 packets/sec
5 minute output rate 1258584000 bits/sec, 1484160 packets/sec
228290765840 packets input, 27293508436038 bytes, 0 total input drops
0 drops for unrecognized upper-level protocol
Received 15 broadcast packets, 45 multicast packets