Storm Control - Planet FGSW-4840S User Manual

3.5.5 Storm Control

A BroadcastStorm is a result of an excessive amount of broadcast messages simultaneously transmitted across a network
by a single port. Forwarded message responses are heaped onto the network, straining network resources or causing the
network to time out.
The system measures the incoming Broadcast and Multicast frame rate separately on each port, and discard frames when
the rate exceeds a user-defined rate.
The Storm Control page provides fields for enabling and configuring Storm Control. The screen in Figure 3-14 appears.
Object Description
Port
The Switch port number.
Trunk
If the port is a Trunk member, it indicates which Trunk it belongs to. In the parameters field it list the
parameters of the Trunk which it belongs to and can\'t be modified here, you can configure the
parameters of the Trunk in the Port Trunking page.
Broadcast Control Enable or disable the broadcast control.
Multicast Control
Enable or disable the multicast control, enabling multicast control will also enable broadcast
control.
UL Control
Enable or disable the UL control, enabling UL control will also enable broadcast control and
multicast control.
Limit Rate
Indicates the maximum rate(kilobytes per second)at which the controlled packets configured above
are forwarded. For the 1000M port，if set the value of 64K，the actual value is about 70Kbps.
All port
By operating on this field expediently, you can set the values of all ports in the corresponding field.
Figure 3-14 Storm control screen
User's Manual of FGSW-4840S
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