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3.3.4 Broadcast Storm Control
A broadcast storm means that the network is overwhelmedwith constant broadcast or
multicast traffic. Broadcaststorms can eventually lead to a complete loss of network
connectivity as the packets proliferate.This page can set the broadcast and the multicast
storm control parameter,you can limit the broadcast and multicast per second through this
port,the default value is 255.Tick the Enabled blank to adjust those parameter.
3.3.5 IGMP
The Internet Group Management Protocol (IGMP) is a
manage the membership of
and adjacent
multicast
H
IGMP
Snooping is the process of listening to IGMP
H
H
to "listen in" on the IGMP conversation between
3
packets
IGMP packets sent in a
H
H
H
When IGMP snooping is enabled in a switch it analyses all the IGMP packets between
hosts connected to the switch and multicast routers in the network. When a switch hears an
IGMP report from a host for a given multicast group, the switch adds the host's port number
to the multicast table list for that group. And, when the switch hears an IGMP leave, it
removes the host's port from the multicast table list.
IGMP snooping can very effectively reduce multicast traffic from streaming and other
bandwidth intensive IP applications. While a switch that does not understand multicast will
Internet Protocol
H
routers
to establish multicast group memberships.
H
H
H
multicast
H
communications protocol
H
multicast
groups. IGMP is used by
H
H
H
traffic
, its feature that allows the
H
H
hosts
and
routers
H
H
H
network
.
H
H
H
48
used to
H
IP
hosts
H
H
H
switch
H
by processing the
layer
H
H
H
H
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