The Snooping Switch can be configured to send IGMP/MLD General
queries on all non router ports when spanning tree topology change
occurs in a network. If the spanning tree mode is RSTP, IGMP/MLD
general queries will be sent on all the non router ports present
in the switch.If the spanning tree mode is MSTP, IGMP/MLD general
queries will be sent on all the non router ports of the VLAN mapped
for the MSTP instance.When this object is set to 'enabled' ,the
switch will generate general query messages