Ipv6 Multicast Data Abnormally Terminated On An Intermediate Router; Rps Cannot Join Spt In Ipv6 Pim-Sm - H3C S5500-EI Configuration Manual
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IPv6 multicast data abnormally terminated on an intermediate
router
Symptom
An intermediate router can receive IPv6 multicast data successfully, but the data cannot reach the last
hop router. An interface on the intermediate router receives data, but no corresponding (S, G) entry is
created in the IPv6 PIM routing table.
Analysis
If an IPv6 multicast forwarding boundary has been configured through the multicast ipv6 boundary
•
command, any IPv6 multicast packet will be kept from crossing the boundary, and no routing entry
can be created in the IPv6 PIM routing table.
•
In addition, the source-policy command filters received IPv6 multicast packets. If the IPv6 multicast
data fails to pass the IPV6 ACL rule defined in this command, IPv6 PIM cannot create the route entry
either.
Solution
Use the display current-configuration command to verify the IPv6 multicast forwarding boundary
1.
settings. Use the multicast ipv6 boundary command to change the IPv6 multicast forwarding
boundary settings.
Use the display current-configuration command to verify the IPv6 multicast filter configuration.
2.
Change the IPv6 ACL rule defined in the source-policy command so that the source/group address
of the IPv6 multicast data can pass ACL filtering.
RPS cannot join SPT in IPv6 PIM-SM
Symptom
An RPT cannot be established correctly, or the RPs cannot join the SPT to the IPv6 multicast source.
Analysis
As the core of an IPv6 PIM-SM domain, the RPs provide services for specific IPv6 multicast groups.
•
Multiple RPs can coexist in a network. Make sure that the RP information on all routers is exactly the
same and that a specific group is mapped to the same RP. Otherwise, IPv6 multicast will fail.
In the case of the static RP mechanism, the same RP address must be configured on all the routers
•
in the entire network, including static RPs, by means of the static RP command. Otherwise, IPv6
multicast will fail.
Solution
Use the display ipv6 routing-table command to verify that a route is available on each router to the
1.
RP.
448
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Troubleshooting
