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Download EPUBIGMP snooping
This provides a method
for intelligently forwarding multicast packets within a Layer 2 broadcast domain. By
“snooping” the IGMP (Internet Group Management Protocol) registration information, the device forms
a distribution list that determines which endstations receive packets with a specific
multicast address. Layer 2 switches listen for IGMP messages and build mapping tables and
associated forwarding filters. IGMP snooping also reduces IGMP protocol traffic.