Configuration Examples For Cisco Mpls-Te; Configure Fast Reroute And Sonet Aps: Example; Build Mpls-Te Topology And Tunnels: Example - Cisco CRS Configuration Manual

Configuration Examples for Cisco MPLS-TE

Command or Action
Step 7
onehop
Example:
RP/0/RP0/CPU0:router(config-te-mesh-group)#onehop
Step 8 Use the commit or end command.
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
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
342
mpls traffic-eng
interface pos 0/6/0/0
router id loopback 0
router ospf 1
Implementing MPLS Traffic Engineering
Purpose
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.
commit—Saves the configuration changes and remains
within the configuration session.
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.