Cisco XR 12000 Series Configuration Manual page 67

Implementing Multicast Routing on Cisco IOS XR Software Cisco ASR 9000 Series Routers
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In addition, you can use time to live (TTL) to control what data is encapsulated in the first SA message
for every source. For example, you could limit internal traffic to a TTL of eight hops. If you want other
groups to go to external locations, you send those packets with a TTL greater than eight hops.
By default, MSDP automatically sends SA messages to peers when a new member joins a group and
wants to receive multicast traffic. You are no longer required to configure an SA request to a specified
MSDP peer.
SUMMARY STEPS
1.
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8.
DETAILED STEPS
Command or Action
Step 1
configure
Example:
RP/0/0/CPU0:router# configure
Step 2
router msdp
Example:
RP/0/0/CPU0:router(config)# router msdp
OL-
Specify an extended access list to pass certain source/group pairs
Filter based on match criteria in a route map
configure
router msdp
sa-filter {in | out} {ip-address | peer-name} [list access-list-name] [rp-list access-list-name]
cache-sa-state [list access-list-name] [rp-list access-list-name]
ttl-threshold ttl-value
exit
ipv4 access-list name [sequence-number] permit source [source-wildcard]
end
or
commit
Purpose
Enters global configuration mode.
Enters MSDP protocol configuration mode.
Multicast Configuration Guide
How to Implement Multicast Routing
MCC-59