Configuration Guide User guide
1564 FastIron Configuration Guide
53-1002494-02
Multicast Source Discovery Protocol (MSDP)
• sa-filter in – Filters source-group pairs received in Source-Active messages from an MSDP
neighbor
• sa-filter originate – Filters source-group pairs in Source-Active messages in advertisements to
an MSDP neighbor
Filtering incoming 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 out (dropped).
• For peer 2.2.2.97, all source-group pairs except those with 10.x.x.x as the source are
permitted.
• For peer 2.2.2.96, all source-group pairs except those associated with RP 2.2.42.3 are
permitted.
Example of configuring MSDP peers
The following commands configure an IP address on port 3/1. This is the port on which the MSDP
neighbors will be configured.
Brocade(config)# interface ethernet 3/1
Brocade(config-if-3/1)# ip address 2.2.2.98/24
Brocade(config-if-3/1)# exit
The following commands configure a loopback interface. The Layer 3 switch will use this interface
as the source address for communicating with the MSDP neighbors.
Brocade(config)# interface loopback 1
Brocade(config-lbif-1)# ip address 9.9.9.8/32
Brocade(config-lbif-1)# exit
The following commands configure extended ACLs. The ACLs will be used in route maps, which will
be used by the Source-Active filters.
The following commands configure the route maps.
Brocade(config)# access-list 123 permit 10.0.0.0 0.255.255.255 any
Brocade(config)# access-list 124 permit 2.2.42.3 0.0.0.0 any
Brocade(config)# access-list 125 permit any any
Brocade(config)# route-map msdp_map deny 1
Brocade(config-routemap msdp_map)# match ip address 123
Brocade(config-routemap msdp_map)# route-map msdp_map permit 10
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)# route-map msdp2_rp_map permit 10
Brocade(config-routemap msdp2_rp_map)# exit