Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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IGMP Audit Query
With IGMP audit query enabled, an audit query is sent out when the device detects the number of joined groups of a port increases. Normally, a port is a member of one multicast group at a time. The device sends out an audit query if a port requests to join another multicast group but the device has not received any leave message from the port. This feature helps maintain the actual relationship between ports and groups, especially when the packet loss rate is high in a network.