H3C Technologies H3C S10500 Series Switches - Manual (Page 447)

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2. Check the dynamic RP information. Use the display pim ipv6 rp-info command to check whether
the RP information is consistent on all routers. In the case of inconsistent RP information, configure
consistent RP address on all the routers.
3. Check the static RP configuration. Carry out the display pim ipv6 rp-info command to check
whether the same RP address has been configured on all the routers throughout the network.
RPT establishment failure or source registration failure in IPv6
PIM-SM
Symptom
C-RPs cannot unicast advertise messages to the BSR. The BSR does not advertise bootstrap messages
containing C-RP information and has no unicast route to any C-RP. An RPT cannot be established correctly,
or the DR cannot perform source registration with the RP.
Analysis
• C-RPs periodically send advertisement messages to the BSR by unicast. If a C-RP does not have a
route to the BSR, the BSR cannot receive the advertisements from the C-RP, and the bootstrap
messages of the BSR will not contain the information about that C-RP.
• The RP is the core of an IPv6 PIM-SM domain. Make sure that the RP information on all routers is
exactly the same, a specific group is mapped to the same RP, and a unicast route is available to the
RP.
Solution
1. Check whether routes to C-RPs, the RP and the BSR are available. Carry out the display ipv6
routing-table command to check whether routes are available on each router to the RP and the BSR,
and whether a route is available between the RP and the BSR. Make sure that each C-RP has a
unicast route to the BSR, the BSR has a unicast route to each C-RP, and all the routers in the entire
network have a unicast route to the RP.
2. Check the RP and BSR information. IPv6 PIM-SM needs the support of the RP and BSR. Use the
display pim ipv6 bsr-info command to check whether the BSR information is available on each
router, and then use the display pim ipv6 rp-info command to check whether the RP information is
correct.
3. View the IPv6 PIM neighboring relationships. Use the display pim ipv6 neighbor command to
check whether the normal neighboring relationships have been established among the routers.