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H3C Technologies H3C S7500E Series Switches User Manual

Page 391

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13-40

Use the display pim ipv6 neighbor command to view the IPv6 PIM neighboring relationships

among the switches. For example:

# View the IPv6 PIM neighboring relationships on Switch D.

[SwitchD] display pim ipv6 neighbor

Total Number of Neighbors = 3

Neighbor Interface Uptime Expires Dr-Priority

1002::1 Vlan103 00:04:00 00:01:29 1

2002::1 Vlan101 00:04:16 00:01:29 3

3001::1 Vlan102 00:03:54 00:01:17 5

Assume that Host A needs to receive the information addressed to IPv6 multicast group G

(FF0E::101). After IPv6 multicast source S (4001::100/64) sends IPv6 multicast packets to the

IPv6 multicast group G, an SPT is established through traffic flooding. Switches on the SPT

path (Switch A and Switch D) have their (S, G) entries. Host A sends an MLD report to Switch A

to join IPv6 multicast group G, and a (*, G) entry is generated on Switch A. You can use the

display pim IPv6 routing-table command to view the IPv6 PIM routing table information on

each switch. For example:

# View the IPv6 PIM multicast routing table information on Switch A.

[SwitchA] display pim ipv6 routing-table

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

(*, FF0E::101)

Protocol: pim-dm, Flag: WC

UpTime: 00:01:24

Upstream interface: NULL

Upstream neighbor: NULL

RPF prime neighbor: NULL

Downstream interface(s) information:

Total number of downstreams: 1

1: Vlan-interface100

Protocol: mld, UpTime: 00:01:20, Expires: never

(4001::100, FF0E::101)

Protocol: pim-dm, Flag: ACT

UpTime: 00:01:20

Upstream interface: Vlan-interface103

Upstream neighbor: 1002::2

RPF prime neighbor: 1002::2

Downstream interface(s) information:

Total number of downstreams: 1

1: Vlan-interface100

Protocol: pim-dm, UpTime: 00:01:20, Expires: never

The information on Switch B and Switch C is similar to that on Switch A.

# View the IPv6 PIM multicast routing table information on Switch D.

[SwitchD] display pim ipv6 routing-table

Total 0 (*, G) entry; 1 (S, G) entry

(4001::100, FF0E::101)