Configuration On A Abr/Asbr; Multitopology Routing - Cisco ASR 9000 Series Configuration Manual

Implementing Layer-3 Multicast Routing on Cisco IOS XR Software

Configuration on a ABR/ASBR

SUMMARY STEPS
1. configure
2. multicast-routing
3. address-family ipv4
4. mdt segment-border route-policy route-policy-name
5. commit
DETAILED STEPS
Command or Action
Step 1
configure
Step 2 multicast-routing
Example:
RP/0/RSP0/CPU0:router(config)# multicast-routing
Step 3
address-family ipv4
Example:
RP/0/RSP0/CPU0:router(config-mcast)# address-family
ipv4
Step 4 mdt segment-border route-policy route-policy-name
Example:
RP/0/RSP0/CPU0:router(config-mcast-default-ipv4)# mdt
segment-border route-policy blue
Step 5
commit

Multitopology Routing

Multitopology routing allows you to manipulate network traffic flow when desirable (for example, to broadcast
duplicate video streams) to flow over non-overlapping paths.
At the core of multitopology routing technology is router space infrastructure (RSI). RSI manages the global
configuration of routing tables. These tables are hierarchically organized into VRF tables under logical routers.
By default, RSI creates tables for unicast and multicast for both IPv4 and IPv6 under the default VRF. Using
multitopology routing, you can configure named topologies for the default VRF.
PIM uses a routing policy that supports matching on source or group address to select the topology in which
to look up the reverse-path forwarding (RPF) path to the source. If you do not configure a policy, the existing
behavior (to select a default table) remains in force.
Currently, IS-IS and PIM routing protocols alone support multitopology-enabled network.
Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide, Release 6.0.x
Multitopology Routing
Purpose
Enters the multicast configuration mode.
Enters the address-family submode.
Enables segmented multicast on the border
router for the specified route policy.
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