Enabling An Autotunnel Backup - Cisco CRS Configuration Manual

Implementing MPLS Traffic Engineering

Enabling an AutoTunnel Backup

Perform this task to configure the AutoTunnel Backup feature. By default, this feature is disabled. You can
configure the AutoTunnel Backup feature for each interface. It has to be explicitly enabled for each interface
or link.
SUMMARY STEPS
1. configure
2. ipv4 unnumbered mpls traffic-eng Loopback 0
3. mpls traffic-eng
4. auto-tunnel backup timers removal unused frequency
5. auto-tunnel backup tunnel-id min minmax max
6. Use the commit or end command.
7. show mpls traffic-eng auto-tunnel backup summary
DETAILED STEPS
Command or Action
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Step 2 ipv4 unnumbered mpls traffic-eng Loopback 0
Example:
RP/0/RP0/CPU0:router(config)#ipv4
unnumbered mpls traffic-eng Loopback 0
Step 3 mpls traffic-eng
Example:
RP/0/RP0/CPU0:router(config)# mpls
traffic-eng
Step 4 auto-tunnel backup timers removal unused
frequency
Example:
RP/0/RP0/CPU0:router(config-mpls-te)#
auto-tunnel backup timers removal unused
20
Purpose
Enters global configuration mode.
Configures the globally configured IPv4 address that can be used
by the AutoTunnel Backup Tunnels.
Loopback 0 is the router ID. The AutoTunnel Backup
Note
tunnels will not come up until a global IPv4 address is
configured.
Enters MPLS-TE configuration mode.
Configures how frequently a timer scans the backup automatic
tunnels and removes tunnels that are not in use.
• Use the frequency argument to scan the backup automatic
tunnel. Range is 0 to 10080.
Note You can also configure the auto-tunnel backup command
at mpls traffic-eng interface mode.
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
Enabling an AutoTunnel Backup
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