Cisco ASR 9000 Series Configuration Manual page 244

Controlling Source Information on MSDP Peer Routers
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. configure
2. router msdp
3. sa-filter {in | out} {ip-address | peer-name} [list access-list-name] [rp-list access-list-name]
4. cache-sa-state [list access-list-name] [rp-list access-list-name]
5. ttl-threshold ttl-value
6. exit
7. ipv4 access-list name [sequence-number] permit source [source-wildcard]
8. commit
DETAILED STEPS
Command or Action
Step 1 configure
Step 2 router msdp
Example:
RP/0/RSP0/CPU0:router(config)# router
msdp
Step 3
sa-filter {in | out} {ip-address | peer-name}
[list access-list-name] [rp-list
access-list-name]
Example:
RP/0/RSP0/CPU0:router(config-msdp)#
sa-filter out router.cisco.com list 100
Step 4 cache-sa-state [list access-list-name] [rp-list
access-list-name]
Example:
RP/0/RSP0/CPU0:router(config-msdp)#
cache-sa-state 100
Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide, Release 6.0.x
230
Implementing Layer-3 Multicast Routing on Cisco IOS XR Software
Purpose
Enters MSDP protocol configuration mode.
Configures an incoming or outgoing filter list for messages received
from the specified MSDP peer.
• If you specify both the list and rp-list keywords, all conditions
must be true to pass any source, group (S, G) pairs in outgoing
Source-Active (SA) messages.
• You must configure the ipv4 access-list command in
page 231.
• If all match criteria are true, a permit from the route map passes
routes through the filter. A deny filters routes.
• This example allows only (S, G) pairs that pass access list 100 to
be forwarded in an SA message to the peer named router.cisco.com.
Creates and caches source/group pairs from received Source-Active (SA)
messages and controls pairs through access lists.
Step 7, on