1-36Configured Multicast Group Policy Fails to Take EffectSymptomAlthough a multicast group policy has been configured to allow hosts to join specific multicast groups,the hosts can still receive multicast data addressed to other multicast groups.Analysisz The ACL rule is incorrectly configured.z The multicast group policy is not correctly applied.z The function of dropping unknown multicast data is not enabled, so unknown multicast data isflooded.Solution1) Use the display acl command to check the configured ACL rule. Make sure that the ACL ruleconforms to the multicast group policy to be implemented.2) Use the display this command in IGMP snooping view or in the corresponding interface view tocheck whether the correct multicast group policy has been applied. If not, use the group-policy origmp-snooping group-policy command to apply the correct multicast group policy.3) Use the display current-configuration command to check whether the function of droppingunknown multicast data is enabled. If not, use the drop-unknown or igmp-snoopingdrop-unknown command to enable the function of dropping unknown multicast data.
