Netgear GS728TP User Manual Page 412

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Managing Device Security
412
ProSafe M5300 Switch
Storm Control
A broadcast storm is the result of an excessive number of broadcast messages
simultaneously transmitted across a network by a single port. Forwarded message
responses can overload network resources and/or cause the network to time out.
The switch measures the incoming broadcast/multicast/unknown unicast packet rate per port
and discards packets when the rate exceeds the defined value. Storm control is enabled per
interface, by defining the packet type and the rate at which the packets are transmitted.
The Storm Control folder contains links to the following features:
Storm Control Global Configuration on page 412
Storm Control Interface Configuration on page 413
Storm Control Global Configuration
To display the Storm Control Global Configuration page, click Security Traffic Control>
Storm Control
Storm Control Global Configuration.
The following four control radio buttons provide an easy way to enable or disable each type of
packets be rate-limited on every port in a global fashion. The effective storm control state of
each port can be viewed by going to the port configuration page.
Global Flow Control (IEEE 802.3x) Mode - Enable or disable this option by selecting the
corresponding line on the radio button. The factory default is disabled.
Broadcast Storm Control All - Enable or disable the Broadcast Storm Recovery mode on
all ports by clicking the corresponding radio button. When you specify Enable for
Broadcast Storm Recovery and the broadcast traffic on any Ethernet port exceeds the
configured threshold, the switch blocks (discards) the broadcast traffic. The factory
default is enabled.
Multicast Storm Control All - Enable or disable the Multicast Storm Recovery mode on all
ports by clicking the corresponding radio button. When you specify Enable for Multicast
Storm Recovery and the multicast traffic on any Ethernet port exceeds the configured
threshold, the switch blocks (discards) the multicast traffic. The factory default is disabled.
Unknown Unicast Storm Control All - Enable or disable the Unicast Storm Recovery
mode on all ports by clicking the corresponding radio button. When you specify Enable for
Unicast Storm Recovery and the Unicast traffic on any Ethernet port exceeds the
configured threshold, the switch blocks (discards) the unicast traffic. The factory default is
disabled.
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