3Com Switch 8800 Family Configuration Guide

MSDP Configuration 477
The command to add description is optional.
If the local router is also in BGP Peer relation with a MSDP peer, the MSDP peer
and the BGP peer should use the same IP address.
Not any two routers between which MSDP peer relationship has been established
must run BGP or MBGP, so long as they have a BGP or MBGP route between them.
If no BGP of MBGP route exists between them, then you must configure static RPF
peers.
Configuring Static RPF
Peers
Please perform the following configurations in MSDP view.
By default, no static RPF peer is configured.
n
■ The peer command must be configured before the configuration of
static-rpf-peer command.
■ If only one MSDP peer is configured via the peer command, the MSDP peer will
be regarded as the static RPF peer.
To configure multiple static RPF peers at the same time, take any of the two
methods:
■ Using rp-policy parameters universally: Multiple static RPF peers take effect at
the same time and SA messages are filtered by the RP addresses contained
according to the configured prefix list. If multiple static RPF peers using the
same rp-policy parameter are configured, any peer that receives an SA
message will forward it to the other peers.
■ Not using the rp-policy parameter universally: According to the configuration
sequence, only the first static RPF peer whose connection state is UP is
activated. All SA messages from the peer will be received and those from other
static RPF peers will be discarded. Once the activated static RPF peer turns
invalid (possibly out of configuration removed or connection interrupted), the
following first static RPF peer with UP connection state according to the
configuration sequence will assume its role.
Tab le 466 Configure MSDP peers
Operation Command
Configure MSDP peers
peer peer-address connect-interface
interface-type interface-number
Remove MSDP peer configuration undo peer peer-address
Add description to a MSDP peer peer peer-address description text
Remove the description undo peer peer-address description text
Tab le 467 Configure static RPF peers
Operation Command
Configure static RPF peers
static-rpf-peer peer-address [ rp-policy
ip-prefix-name]
Remove static RPF peer configuration undo static-rpf-peer peer-address