Cisco ASR 9000 Series Software Manual page 88

Controlling Source Information on MSDP Peer Routers
Command or Action
Step 12
commit
Step 13 show msdp [ipv4] globals
Example:
RP/0/RSP0/CPU0:router# show msdp globals
Step 14 show msdp [ipv4] peer [peer-address]
Example:
RP/0/RSP0/CPU0:router# show msdp peer
172.31.1.2
Step 15 show msdp [ipv4] rpf rpf-address
Example:
RP/0/RSP0/CPU0:router# show msdp rpf
172.16.10.13
Controlling Source Information on MSDP Peer Routers
Your MSDP peer router can be customized to control source information that is originated, forwarded, received,
cached, and encapsulated.
When originating Source-Active (SA) messages, you can control to whom you will originate source information,
based on the source that is requesting information.
When forwarding SA messages you can do the following:
• Filter all source/group pairs
• Specify an extended access list to pass only certain source/group pairs
• Filter based on match criteria in a route map
When receiving SA messages you can do the following:
• Filter all incoming SA messages from an MSDP peer
• Specify an extended access list to pass certain source/group pairs
• Filter based on match criteria in a route map
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.
Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide, Release 5.1.x
88
Implementing Layer-3 Multicast Routing on Cisco IOS XR Software
Purpose
Displays the MSDP global variables.
Displays information about the MSDP peer.
Displays the RPF lookup.