H3C Technologies H3C S3100V2 Series Switches - Manual (Page 103)

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Analysis
• The IPv6 ACL rule is incorrectly configured.
• The IPv6 multicast group policy is not correctly applied.
• The function of dropping unknown IPv6 multicast data is not enabled, so unknown IPv6 multicast
data is flooded.
Solution
1. Use the display acl ipv6 command to check the configured IPv6 ACL rule. Make sure that the IPv6
ACL rule conforms to the IPv6 multicast group policy to be implemented.
2. Use the display this command in MLD snooping view or the corresponding interface view to check
whether the correct IPv6 multicast group policy has been applied. If not, use the group-policy or
mld-snooping group-policy command to apply the correct IPv6 multicast group policy.
3. Use the display current-configuration command to check whether the function of dropping
unknown IPv6 multicast data is enabled. If not, use the drop-unknown command to enable the
function of dropping unknown IPv6 multicast data.