Configuring MSDP mesh groups
Clearing the source active cache
To clear the source active cache, enter the following command at the Privileged EXEC level of the CLI.
device# clear ip msdp
Syntax: clear ip msdp sa-cache [ ip-addr ]
The command in this example clears all the cache entries. Use the
Clearing the source active cache for a VRF
To clear the MSDP VRF source active cache by entering the following command at the MSDP VRF configuration level.
device#clear ip msdp
Syntax: clear ip msdp [vrf
Clearing MSDP statistics
To clear MSDP statistics, enter the following command at the Privileged EXEC level of the CLI.
device# clear ip msdp statistics
Syntax: clear ip msdp statistics [ ip-addr ]
The command in this example clears statistics for all the peers. To clear statistics for only a specific peer, enter the IP address of the peer.
Clearing MSDP VRF statistics
To clear the MSDP VRF statistics by entering the following command.
device# clear ip msdp vrf blue statistics
Syntax: clear ip msdp [vrf vrf-name ] statistics [ip-addr ]
The command in this example clears statistics for all the peers. To clear statistics for only a specific peer, enter the IP address of the peer.
The command in this example clears all statistics for all the peers in the VRF "blue".
Configuring MSDP mesh groups
A PIM Sparse domain can have several RPs that are connected to each other to form an MSDP mesh group. To qualify as a mesh group, the RPs have to be fully meshed; that is, each RP must be connected to all peer RPs in a domain. (Refer to Figure 7 .)
A mesh group reduces the forwarding of SA messages within a domain. Instead of having every RP in a domain forward SA messages to all the RPs within that domain, only one RP forwards the SA message. Since an MSDP mesh group is fully meshed, peers do not forward SA messages received in a domain from one member to any member of the group. The RP that originated the SA or the first RP in a domain that receives the SA message is the only one that forwards the message to the members of a
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