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Configuring Multicast Source Discovery Protocol (MSDP) 3<br />
Filtering incoming and outgoing Source-Active messages<br />
The following example configures filters for incoming Source-Active messages from three MSDP<br />
neighbors:<br />
• For peer 2.2.2.99, all source-group pairs in Source-Active messages from the neighbor are<br />
filtered (dropped).<br />
• For peer 2.2.2.97, all source-group pairs except those with source address matching 10.x.x.x<br />
and group address of 235.10.10.1 are permitted.<br />
• For peer 2.2.2.96, all source-group pairs except those associated with RP 2.2.42.3 are<br />
permitted.<br />
To configure filters for incoming Source-Active messages, enter commands at the MSDP VRF<br />
configuration level.<br />
To configure filters for outbound Source-Active messages, enter the optional out keyword.<br />
Example<br />
The following commands configure extended ACLs. The ACLs will be used in route maps, which will<br />
be used by the Source-Active filters.<br />
<strong>Brocade</strong>(config)# access-list 123 permit ip 10.0.0.0 0.255.255.255 host<br />
235.10.10.1<br />
<strong>Brocade</strong>(config)# access-list 124 permit ip host 2.2.42.3 any<br />
<strong>Brocade</strong>(config)# access-list 125 permit ip any any<br />
The following commands configure the route maps.<br />
<strong>Brocade</strong>(config)# route-map msdp_map deny 1<br />
<strong>Brocade</strong>(config-routemap msdp_map)# match ip address 123<br />
<strong>Brocade</strong>(config-routemap msdp_map)# exit<br />
<strong>Brocade</strong>(config)# route-map msdp_map permit 2<br />
<strong>Brocade</strong>(config-routemap msdp_map)# match ip address 125<br />
<strong>Brocade</strong>(config-routemap msdp_map)# exit<br />
<strong>Brocade</strong>(config)# route-map msdp2_map permit 1<br />
<strong>Brocade</strong>(config-routemap msdp2_map)# match ip address 125<br />
<strong>Brocade</strong>(config-routemap msdp2_map)# exit<br />
<strong>Brocade</strong>(config)# route-map msdp2_rp_map deny 1<br />
<strong>Brocade</strong>(config-routemap msdp2_rp_map)# match ip route-source 124<br />
<strong>Brocade</strong>(config-routemap msdp2_rp_map)# exit<br />
<strong>Brocade</strong>(config)# route-map msdp2_rp_map permit 2<br />
<strong>Brocade</strong>(config-routemap msdp2_rp_map)# match ip route-source 125<br />
<strong>Brocade</strong>(config-routemap msdp2_rp_map)# exit<br />
The following commands configure the Source-Active filters.<br />
To specify VRF information, enter the following commands at the MSDP VRF configuration level.<br />
<strong>Brocade</strong>(config)# router msdp vrf blue<br />
<strong>Brocade</strong>(config-msdp-router-vrf blue)# sa-filter in 2.2.2.99<br />
<strong>Brocade</strong>(config-msdp-router-vrf blue)# sa-filter in 2.2.2.97 route-map msdp_map<br />
<strong>Brocade</strong>(config-msdp-router-vrf blue)# sa-filter in 2.2.2.96 route-map msdp2_map<br />
rp-route-map msdp2_rp_map<br />
The sa-filter commands configure the following filters:<br />
• sa-filter in 2.2.2.99 – This command drops all source-group pairs received from neighbor<br />
2.2.2.99.<br />
FastIron Ethernet Switch IP Multicast Configuration Guide 115<br />
53-1002638-02