Outgoing Interface List
Serial0/2/2/0/1:1.16 Flags: F NS, Up: 04:08:30
(*,225.0.32.4) RPF nbr: 102.0.0.102 Flags: C
Up: 04:08:30
Incoming Interface List
LmdtA1/MIPMSI Flags: A LMI, Up: 04:08:30
Outgoing Interface List
Serial0/2/2/0/1:1.16 Flags: F NS, Up: 04:08:30
•
To check the MPLS forwarding status, use show mpls forwarding command:
Router# show mpls forwarding
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
16000 16255 MLDP LSM ID: 0x1 Gi0/2/0/3 11.113.1.2 348727240
16001 16254 MLDP LSM ID: 0x3 Gi0/2/0/3 11.113.1.2 348727234
16002 16253 MLDP LSM ID: 0x5 Gi0/2/0/3 11.113.1.2 348727234
16003 16252 MLDP LSM ID: 0x7 Gi0/2/0/3 11.113.1.2 348727234
16004 16251 MLDP LSM ID: 0x9 Gi0/2/0/3 11.113.1.2 421876882
16005 16250 MLDP LSM ID: 0xb Gi0/2/0/3 11.113.1.2 348726916
Configuring Multitopology Routing
This set of procedures configures multitopology routing, which is used by PIM for reverse-path forwarding
(RPF) path selection.
• “Configuring a Global Topology and Associating It with an Interface” (required)
For information, see Cisco IOS XR Routing Configuration Guide for the Cisco CRS Router.
• “Enabling an IS-IS Topology” (required)
For information, see Cisco IOS XR Routing Configuration Guide for the Cisco CRS Router.
• “Placing an Interface in a Topology in IS-IS” (required)
For information, see Cisco IOS XR Routing Configuration Guide for the Cisco CRS Router.
• “Configuring a Routing Policy” (required)
For information, see Cisco IOS XR Routing Configuration Guide for the Cisco CRS Router.
For an example of multitopology routing, see Configuring Multitopology Routing: Example, on page 159.
Restrictions for Configuring Multitopology Routing
•
Only the default VRF is currently supported in a multitopology solution.
•
Only protocol-independent multicast (PIM) and intermediate system-intermediate system (IS-IS) routing
protocols are currently supported.
•
Topology selection is restricted solely to (S, G) route sources for both SM and SSM. Static and IS-IS
are the only interior gateway protocols (IGPs) that support multitopology deployment.
For non-(S, G) route sources like a rendezvous point or bootstrap router (BSR), or when a route policy
is not configured, the current policy default remains in effect. In other words, either a unicast-default or
multicast-default table is selected for all sources based on any of the following configurations:
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
116
Implementing Multicast Routing on Cisco IOS XR Software
Configuring Multitopology Routing
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