Brocade Communications Systems IPMC5000PEF Manual Do Utilizador

mesh group. An RP can forward an SA message to any MSDP router as long as that peer is farther
away from the originating RP than the current MSDP router.

The following figure shows an example of an MSDP mesh group. In a PIM-SM mesh group the RPs
are configured to be peers of each other. They can also be peers of RPs in other domains.

FIGURE 7 Example of MSDP mesh group

contains a mesh group with four RPs. When the first RP, for

example, RP 206.251.21.31 originates or receives an SA message from a peer in another domain, it
sends the SA message to its peers within the mesh group. However, the peers do not send the
message back to the originator RP or to each other. The RPs then send the SA message farther away
to their peers in other domains.The process continues until all RPs within the network receive the SA
message.

Configuring MSDP mesh group

To configure an MSDP mesh group, enter commands such as the following on each device that will be
included in the mesh group.

device(config)# router msdp

device(config-msdp-router)# msdp-peer 206.251.18.31 connect-source loopback 2

device(config-msdp-router)# msdp-peer 206.251.19.31 connect-source loopback 2

device(config-msdp-router)# msdp-peer 206.251.20.31 connect-source loopback 2

device(config-msdp-router)# mesh-group GroupA 206.251.18.31

device(config-msdp-router)# mesh-group GroupA 206.251.19.31

device(config-msdp-router)# mesh-group GroupA 206.251.20.31

device(config-msdp-router)# exit

Configuring MSDP mesh group