H3C Technologies H3C S12500 Series Switches User Manual

Page 423

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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:
# Display 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

# Display 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)

Protocol: pim-dm, Flag: LOC ACT

UpTime: 00:02:19

Upstream interface: Vlan-interface300

Upstream neighbor: NULL

RPF prime neighbor: NULL

Downstream interface(s) information:

Total number of downstreams: 2

1: Vlan-interface103

Protocol: pim-dm, UpTime: 00:02:19, Expires: never

2: Vlan-interface102

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