3Com S7906E Configuration Manual page 1320

HoldTime: 130
Advertisement Interval: 60
Next advertisement scheduled at: 00:00:48
# View the BSR information and the locally configured C-RP information in effect on Switch E.
[SwitchE] display pim ipv6 bsr-info
Elected BSR Address: 1003::2
Priority: 20
Hash mask length: 128
State: Elected
Uptime: 00:01:10
Next BSR message scheduled at: 00:01:48
Candidate BSR Address: 1003::2
Priority: 20
Hash mask length: 128
State: Elected
Candidate RP: 1003::2(Vlan-interface102)
Priority: 0
HoldTime: 130
Advertisement Interval: 60
Next advertisement scheduled at: 00:00:48
To view the RP information discovered on a switch, use the display pim ipv6 rp-info command. For
example:
# View the RP information on Switch A.
[SwitchA] display pim ipv6 rp-info
PIM-SM BSR RP information:
prefix/prefix length: FF0E::101/64
RP: 4002::1
Priority: 0
HoldTime: 130
Uptime: 00:05:19
Expires: 00:02:11
RP: 1003::2
Priority: 0
HoldTime: 130
Uptime: 00:05:19
Expires: 00:02:11
Assume that Host A needs to receive information addressed to the IPv6 multicast group G (FF0E::100).
The RP corresponding to the multicast group G is Switch E as a result of hash calculation, so an RPT
will be built between Switch A and Switch E. When the IPv6 multicast source S (4001::100/64) registers
with the RP, an SPT will be built between Switch D and Switch E. Upon receiving IPv6 multicast data,
Switch A immediately switches from the RPT to the SPT. Switches on the RPT path (Switch A and
Switch E) have a (*, G) entry, while switches on the SPT path (Switch A and Switch D) have an (S, G)
entry. You can use the display pim ipv6 routing-table command to view the PIM routing table
information on the switches. For example:
# View the IPv6 PIM multicast routing table information on Switch A.
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