Cisco CRS Configuration Guide

SUMMARY STEPS
1.
configure
2.
ipv4 unnumbered mpls traffic-eng Loopback N
3.
mpls traffic-eng
4.
auto-tunnel mesh
5.
tunne-id min value max value
6.
group group-id
7.
onehop
8.
Use the commit or end command.
DETAILED STEPS
PurposeCommand or Action
Enters global configuration mode.configure
Example:
RP/0/RP0/CPU0:router# configure
Step 1
Configures the globally configured IPv4 address that can
be used by the Auto-tunnel backup tunnels.
ipv4 unnumbered mpls traffic-eng Loopback N
Example:
RP/0/RP0/CPU0:router(config)#ipv4 unnumbered mpls
traffic-eng loopback 0
Step 2
Enters the MPLS-TE submode.mpls traffic-eng
Example:
RP/0/RP0/CPU0:router(config)#mpls traffic-eng
Step 3
Enters the auto-tunnel mesh configuration submode.auto-tunnel mesh
Example:
RP/0/RP0/CPU0:router(config-mpls-te)#auto-tunnel
mesh
Step 4
Specifies the minimum and maximum number of
auto-tunnel mesh tunnels that can be created on this router.
The range of tunnel ID is from 0 to 65535.
tunne-id min value max value
Example:
RP/0/0/CPU0:ios(config-te-auto-mesh)# tunnel-id
min 4000 max 6000
Step 5
Enters the auto-tunnel mesh group configuration submode
and creates a group ID.
group group-id
Example:
RP/0/RP0/CPU0:router(config-te-auto-mesh)#group
50
Step 6
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
341
Implementing MPLS Traffic Engineering
Enabling Auto-onehop Tunnels to Next-hop Neighbors

Cisco CRS Specifications

General

Operating System	Cisco IOS XR
Product Type	Core Router
Form Factor	Modular Chassis
Dimensions	Varies by chassis type
Weight	Varies by chassis type
Architecture	Distributed
Switch Fabric	Multi-stage
Interface Support	Ethernet, SONET/SDH, OTN
Interfaces/Ports	Varies by line card
Port Density	Varies by line card
Routing Protocol	BGP, IS-IS, OSPF, MPLS
Management	CLI, SNMP
Power Supply	Redundant, hot-swappable
Cooling	Redundant, Hot-swappable Fan Trays
Supported Protocols	IPv4, IPv6, MPLS
Management Interfaces	Ethernet, console
Security Features	ACLs