Abnormal termination of ipv6 multicast data, Symptom, Analysis – H3C Technologies H3C S7500E Series Switches User Manual
Page 320: Solution
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The reset command clears the information in the IPv6 multicast routing table or the
multicast forwarding table, and thus may cause transmission failure of IPv6 multicast
information.
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When a routing entry is deleted from the IPv6 multicast routing table, the corresponding
forwarding entry will also be deleted from the IPv6 multicast forwarding table.
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When a forwarding entry is deleted from the IPv6 multicast forwarding table, the
corresponding routing entry will also be deleted from the IPv6 multicast routing table.
Troubleshooting IPv6 Multicast Policy Configuration
Abnormal Termination of IPv6 Multicast Data
Symptom
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A host sends an MLD report announcing its joining an IPv6 multicast group (G). However,
there is no member information about the IPv6 multicast group (G) on the immediate router.
The intermediate router can receive IPv6 multicast packets successfully, but the packets
cannot reach the stub network.
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The interface of the intermediate router receives the IPv6 multicast packets, but there is no
corresponding (S, G) entry in the IPv6 PIM routing table.
Analysis
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The multicast ipv6 boundary command is used to filter IPv6 multicast packets received
on an interface. If an IPv6 multicast packet fails to match the IPv6 ACL rule of this
command, IPv6 PIM will create no routing entry.
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In addition, the source-policy command in IPv6 PIM is used to filter received IPv6
multicast packets. If an IPv6 multicast packet fails to match the IPv6 ACL rule of this
command, IPv6 PIM will not create a routing entry, either.
Solution
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Use the display current-configuration command to display the IPv6 ACL rule configured
on the multicast forwarding boundary. Change the IPv6 ACL rule used in the multicast
ipv6 boundary command so that the source address of the IPv6 multicast packets and the
IPv6 multicast group address can both match the IPv6 ACL rule.
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Check the configuration of the multicast filter. Use the display current-configuration
command to view the configuration of the IPv6 multicast filter, and change the IPv6 ACL
rule used in the source-policy command so that the source address of the IPv6 multicast
packets and the IPv6 multicast group address can both match the IPv6 ACL rule.