| Nortel Networks Optivity Switch Manager for LAN Switch Networks Release 1.0.0.0 |
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IGMP Snooping uses IGMP messages to prune group membership per port within a VLAN. The switch listens to group reports for each port and builds a database of multicast group members per port. Only those ports that are specified in the database receive multicast traffic, instead of all the ports in the VLAN.
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