Implementing Multicast Routing on Cisco IOS XR Software Cisco ASR 9000 Series Routers
Configuration Examples for Implementing Multicast Routing on Cisco IOS XR Software
MCC-68
Multicast Configuration Guide
OL-
Inheritance in MSDP on Cisco IOS XR Software: Example
The following MSDP commands can be inherited by all MSDP peers when configured under router
MSDP configuration mode. In addition, commands can be configured under the peer configuration mode
for specific peers to override the inheritance feature.
• connect-source
• sa-filter
• ttl-threshold
If a command is configured in both the router msdp and peer configuration modes, the peer configuration
takes precedence.
In the following example, MSDP on Router A filters Source-Active (SA) announcements on all peer
groups in the address range 226/8 (except IP address 172.16.0.2); and filters SAs sourced by the
originator RP 172.16.0.3 to 172.16.0.2.
MSDP peers (172.16.0.1, 172.16.0.2, and 172.17.0.1) use the loopback 0 address of Router A to set up
peering. However, peer 192.168.12.2 uses the IPv4 address configured on the Packet-over-SONET/SDH
(POS) interface to peer with Router A.
Router A
!
ipv4 access-list 111
10 deny ip host 172.16.0.3 any
20 permit any any
!
ipv4 access-list 112
10 deny any 226.0.0.0 0.255.255.255
30 permit any any
!
router msdp
connect-source loopback 0
sa-filter in rp-list 111
sa-filter out rp-list 111
peer 172.16.0.1
!
peer 172.16.0.2
sa-filter out list 112
!
peer 172.17.0.1
!
peer 192.168.12.2
connect-source pos 0/2/0/0
!
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