PurposeCommand or Action
Enables automatic creation of one-hop tunnels to all next
hop neighbors. The onehop keyword can be applied to as
many mesh groups as desired.
onehop
Example:
RP/0/RP0/CPU0:router(config-te-mesh-group)#onehop
Step 7
commit—Saves the configuration changes and remains
within the configuration session.
Use the commit or end command.
Step 8
end—Prompts user to take one of these actions:
• Yes— Saves configuration changes and exits the
configuration session.
• No—Exits the configuration session without
committing the configuration changes.
• Cancel—Remains in the configuration session,
without committing the configuration changes.
Configuration Examples for Cisco MPLS-TE
These configuration examples are used for MPLS-TE:
Configure Fast Reroute and SONET APS: Example
When SONET Automatic Protection Switching (APS) is configured on a router, it does not offer protection
for tunnels; because of this limitation, fast reroute (FRR) still remains the protection mechanism for MPLS-TE.
When APS is configured in a SONET core network, an alarm might be generated toward a router downstream.
If this router is configured with FRR, the hold-off timer must be configured at the SONET level to prevent
FRR from being triggered while the core network is performing a restoration. Enter the following commands
to configure the delay:
RP/0/RP0/CPU0:router(config)# controller sonet 0/6/0/0 delay trigger line 250
RP/0/RP0/CPU0:router(config)# controller sonet 0/6/0/0 path delay trigger 300
Build MPLS-TE Topology and Tunnels: Example
The following examples show how to build an OSPF and IS-IS topology:
(OSPF)
...
configure
mpls traffic-eng
interface pos 0/6/0/0
router id loopback 0
router ospf 1
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
342
Implementing MPLS Traffic Engineering
Configuration Examples for Cisco MPLS-TE
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