Configure SA Packet

Configuration Condition

Before configuring MSDP, first complete the following tasks:

• Configure the network layer address of the interface, making the neighboring node network layer reachable
• Configure any unicast route protocol, making the intra-domain route reachable
• Configure the PIM-SM protocol, realizing the intra-domain multicast
• Configure the MSDP peer

Configure SA Request Packet

After configuring the SA request packet on the device, the device immediately sends the SA request packet to MSDP peer when receiving the new multicast group adding packet, so as to reduce the adding delay of the multicast group.

Some RP does not hope to be known by the receivers of the un-recognized other multicast domain. You can configure the filter policy of the SA request packet on all peers of the multicast domain to which the RP belongs. Only answer the SA request packet of the peers permitted by the policy.

Table 8-6 Configure the SA request packet

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  ip msdp filter-sa-request only supports the standard ACL.

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Configure SA Packet Filter Policy

Usually, the MSDP peer accepts the SA packets from all peers that pass the RPF check and forward to all the peers out of the mesh group. The user can configure the filter policy of the SA packet on the peer as desired, controlling the SA packets from or sent to the specified peer. When receiving or forwarding the SA packet, the device filters the multicast source group and RP of the SA packet.

Table 8-7 Configure the filter policy of the SA packet

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  The list parameter of ip msdp sa-filter only supports the extended ACL.
• The rp-list parameter of ip msdp sa-filter only supports the standard ACL.

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