H3C S5500-EI - Troubleshooting Ipv6 Multicast Policy Configuration; Abnormal Termination of Ipv6 Multicast Data

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For more information about designated forwarder (DF), see "Configuring IPv6 PIM (available only on the
S5500-EI)."
Troubleshooting IPv6 multicast policy configuration
Abnormal termination of IPv6 multicast data
Symptom
• A host sends an MLD report announcing its joining an IPv6 multicast group (G). However, no
member information about the IPv6 multicast group (G) exists on the intermediate router. The
intermediate router can receive IPv6 multicast packets successfully, but the packets cannot reach the
stub network.
• The interface of the intermediate router receives the IPv6 multicast packets, but no corresponding (S,
G) entry exists in the IPv6 PIM routing table.
Analysis
• The multicast ipv6 boundary command filters 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.
• In addition, the source-policy command in IPv6 PIM filters 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
1. 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 IP address of the IPv6 multicast packets and the IPv6 multicast group
address can both match the IPv6 ACL rule.
2. View the configuration of the multicast filter. Use the display current-configuration command to
display the configuration of the IPv6 multicast filter. Change the IPv6 ACL rule used in the
source-policy command so that the source IP address of the IPv6 multicast packets and the IPv6
multicast group address can both match the IPv6 ACL rule.