3Com S7906E - Switch, Configuration Manual

Page: 1316 / 2621

1-37
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)
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: 3