Allied-telesis AT-S25 Instrukcja Użytkownika Strona 168

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Section II: Local and Telnet Mangement
168
Without IGMP snooping, a switch would have to flood multicast packets
out all of its ports, except the port on which it received the packet. Such
flooding of packets can negatively impact the switch and network
performance.
The AT-8316F or an AT-8324 switch supports both IGMP Version 1 and
Version 2. The switch maintains its 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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