449
2.
Use the display pim ipv6 rp-info command to verify that the RP information is consistent on all
routers. In the case of inconsistent RP information, configure consistent RP address on all the
routers.
3. Use the display pim ipv6 rp-info command to verify that 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. Use the display ipv6 routing-table command to verify that 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. IPv6 PIM-SM needs the support of the RP and BSR. Use the display pim ipv6 bsr-info command to
verify that 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. Use the display pim ipv6 neighbor command to verify that normal neighboring relationships have
been established among the routers.
To Next Page
Loading...
