3com S7906E 설치 설명서

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Configured IPv6 Multicast Group Policy Fails to Take Effect  
Symptom 
Although an IPv6 multicast group policy has been configured to allow hosts to join specific IPv6 
multicast groups, the hosts can still receive IPv6 multicast data addressed to other groups.  
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 or mld-snooping 
drop-unknown command to enable the function of dropping unknown IPv6 multicast data.