HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 38
Multicast group filter does not work, Symptom, Analysis, Solution
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2. If IGMP snooping is not enabled, use the igmp-snooping command in system view to enable IGMP snooping globally, and then use the igmp-snooping enable command in VLAN view to enable IGMP snooping for the VLAN. 3. If IGMP snooping is enabled globally but not enabled for the VLAN, use the igmp-snooping enable command in VLAN view to enable IGMP snooping for the VLAN. Multicast group filter does not work Symptom Hosts can receive multicast data from multicast groups that are not permitted by the multicast group filter. Analysis • The ACL is incorrectly configured. • The multicast group filter is not correctly applied. • The function of dropping unknown multicast data is not enabled, so unknown multicast data is flooded. Solution 1. Use the display acl command to verify that the configured ACL satisfies the multicast group filter requirements. 2. Use the display this command in IGMP-snooping view or in a corresponding interface view to verify that the correct multicast group filter has been applied. If not, use the group-policy or igmp-snooping group-policy command to apply the correct multicast group filter. 3. Use the display igmp-snooping command to verify that the function of dropping unknown multicast data is enabled. If not, use the igmp-snooping drop-unknown command to enable the function of dropping unknown multicast data. 31