Cisco CRS Configuration Guide

Configure the MPLS-TE Auto-Tunnel Backup: Example
The following example shows the auto-tunnel backup configuration for core or edge routers.
RP/0/RP0/CPU0:router(config)#
mpls traffic-eng
auto-tunnel backup
tunnel-id min 60000 max 61000
interface pos 0/1/0/0
auto-tunnel backup
attribute-set ab
The following example shows the protection (NNHOP and SRLG) that was set on the auto-tunnel backup.
RP/0/RP0/CPU0:router# show mpls traffic-eng tunnels 1
Signalling Summary:
LSP Tunnels Process: running
RSVP Process: running
Forwarding: enabled
Periodic reoptimization: every 3600 seconds, next in 2524 seconds
Periodic FRR Promotion: every 300 seconds, next in 49 seconds
Auto-bw enabled tunnels: 1
Name: tunnel-te1 Destination: 200.0.0.3 (auto backup)
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 10, type explicit (autob_nnhop_srlg_tunnel1) (Basis for Setup, path weight
11)
path option 20, type explicit (autob_nnhop_tunnel1)
G-PID: 0x0800 (derived from egress interface properties)
Bandwidth Requested: 0 kbps CT0
Creation Time: Fri Jul 10 01:53:25.581 PST (1h 25m 17s ago)
Config Parameters:
Bandwidth: 0 kbps (CT0) Priority: 7 7 Affinity: 0x0/0xffff
Metric Type: TE (default)
AutoRoute: disabled LockDown: disabled Policy class: not set
Forwarding-Adjacency: disabled
Loadshare: 0 equal loadshares
Auto-bw: disabled
Fast Reroute: Disabled, Protection Desired: None
Path Protection: Not Enabled
Auto Backup:
Protected LSPs: 4
Protected S2L Sharing Families: 0
Protected S2Ls: 0
Protected i/f: Gi0/1/0/0 Protected node: 20.0.0.2
Protection: NNHOP+SRLG
Unused removal timeout: not running
History:
Tunnel has been up for: 00:00:08
Current LSP:
Uptime: 00:00:08
Prior LSP:
ID: path option 1 [545]
Removal Trigger: configuration changed
Path info (OSPF 0 area 0):
Hop0: 10.0.0.2
Hop1: 100.0.0.2
Hop2: 100.0.0.3
Hop3: 200.0.0.3
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
356
Implementing MPLS Traffic Engineering
Configure the MPLS-TE Auto-Tunnel Backup: Example

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