Enable Query Transmission on Topology Change

The function that transmits MLD queries only when the topology changes is disabled by default.

1. Specify that MLD general queries should be transmitted when any change occurs in the network topology.

   SEFOS(config)# configure terminal
   SEFOS(config)# ipv6 mld snooping send-query enable
   SEFOS(config)# end

2. Ensure that general queries will be transmitted when a change occurs in the network topology.

   SEFOS# show ipv6 mld snooping globals
    
   Snooping Configuration
     -----------------------------
     MLD Snooping globally enabled
     MLD Snooping is operationally enabled
     Transmit Query on Topology Change globally enabled
     Multicast forwarding mode is MAC based
     Proxy reporting globally enabled
     Router port purge interval is 125 seconds
     Port purge interval is 260 seconds
     Report forward interval is 5 seconds
     Group specific query interval is 2 seconds
     Reports are forwarded on router ports
     Group specific query retry count is 2