3com S7906E Manuel De Montage

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You can use the display msdp brief command to view the brief information of MSDP peering

relationships between the switches.

# View the brief MSDP peer information on Switch B.

[SwitchB] display msdp brief

MSDP Peer Brief Information

Configured Up Listen Connect Shutdown Down

1 1 0 0 0 0

Peer's Address State Up/Down time AS SA Count Reset Count

2.2.2.2 Up 00:10:17 ? 0 0

# View the brief MSDP peer information on Switch D.

[SwitchD] display msdp brief

MSDP Peer Brief Information

Configured Up Listen Connect Shutdown Down

1 1 0 0 0 0

Peer's Address State Up/Down time AS SA Count Reset Count

1.1.1.1 Up 00:10:18 ? 0 0

To view the PIM routing information on the switches, use the display pim routing-table command.

When Source 1 (10.110.5.100/24) sends multicast data to multicast group G (225.1.1.1), Host A joins

multicast group G. By comparing the PIM routing information displayed on Switch B with that displayed

on Switch D, you can see that Switch B acts now as the RP for Source 1 and Host A.

# View the PIM routing information on Switch B.

[SwitchB] display pim routing-table

Total 1 (*, G) entry; 1 (S, G) entry

(*, 225.1.1.1)

RP: 10.1.1.1 (local)

Protocol: pim-sm, Flag: WC

UpTime: 00:15:04

Upstream interface: Register

Upstream neighbor: NULL

RPF prime neighbor: NULL

Downstream interface(s) information:

Total number of downstreams: 1

1: Vlan-interface100

Protocol: igmp, UpTime: 00:15:04, Expires: -

(10.110.5.100, 225.1.1.1)

RP: 10.1.1.1 (local)

Protocol: pim-sm, Flag: SPT 2MSDP ACT

UpTime: 00:46:28

Upstream interface: Vlan-interface103

Upstream neighbor: 10.110.2.2

RPF prime neighbor: 10.110.2.2