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Configuring Multicast Source Discovery Protocol (MSDP) 3
Filtering incoming and outgoing Source-Active messages
The following example configures filters for incoming Source-Active messages from three MSDP
neighbors:
• For peer 2.2.2.99, all source-group pairs in Source-Active messages from the neighbor are
filtered (dropped).
• For peer 2.2.2.97, all source-group pairs except those with source address matching 10.x.x.x
and group address of 235.10.10.1 are permitted.
• For peer 2.2.2.96, all source-group pairs except those associated with RP 2.2.42.3 are
permitted.
To configure filters for incoming Source-Active messages, enter commands at the MSDP VRF
configuration level.
To configure filters for outbound Source-Active messages, enter the optional out keyword.
Example
The following commands configure extended ACLs. The ACLs will be used in route maps, which will
be used by the Source-Active filters.
Brocade(config)# access-list 123 permit ip 10.0.0.0 0.255.255.255 host
235.10.10.1
Brocade(config)# access-list 124 permit ip host 2.2.42.3 any
Brocade(config)# access-list 125 permit ip any any
The following commands configure the route maps.
Brocade(config)# route-map msdp_map deny 1
Brocade(config-routemap msdp_map)# match ip address 123
Brocade(config-routemap msdp_map)# exit
Brocade(config)# route-map msdp_map permit 2
Brocade(config-routemap msdp_map)# match ip address 125
Brocade(config-routemap msdp_map)# exit
Brocade(config)# route-map msdp2_map permit 1
Brocade(config-routemap msdp2_map)# match ip address 125
Brocade(config-routemap msdp2_map)# exit
Brocade(config)# route-map msdp2_rp_map deny 1
Brocade(config-routemap msdp2_rp_map)# match ip route-source 124
Brocade(config-routemap msdp2_rp_map)# exit
Brocade(config)# route-map msdp2_rp_map permit 2
Brocade(config-routemap msdp2_rp_map)# match ip route-source 125
Brocade(config-routemap msdp2_rp_map)# exit
The following commands configure the Source-Active filters.
To specify VRF information, enter the following commands at the MSDP VRF configuration level.
Brocade(config)# router msdp vrf blue
Brocade(config-msdp-router-vrf blue)# sa-filter in 2.2.2.99
Brocade(config-msdp-router-vrf blue)# sa-filter in 2.2.2.97 route-map msdp_map
Brocade(config-msdp-router-vrf blue)# sa-filter in 2.2.2.96 route-map msdp2_map
rp-route-map msdp2_rp_map
The sa-filter commands configure the following filters:
• sa-filter in 2.2.2.99 – This command drops all source-group pairs received from neighbor
2.2.2.99.
FastIron Ethernet Switch IP Multicast Configuration Guide 115
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