Allied Telesis AT-GS950/16PS, AT-S112 manual 137

AT-GS950/16PS Switch Web Interface User’s Guide

Without IGMP snooping, a switch floods multicast packets from all of its ports, except the port on which it received the packet. Such flooding of packets can negatively impact network performance.

The AT-GS950/16PS switch maintains a list of multicast groups through an adjustable time out value, which controls how frequently it expects to see reports from end nodes that want to remain members of multicast groups, and by processing leave requests.

Note

By default, IGMP snooping is disabled on the switch.

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