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Enabling Storm Control
A Broadcast Storm is a result of an excessive amount of broadcast messages simultaneously transmitted across a network by a single port. Forwarded
message responses are loaded onto the network, straining network resources or causing the network to time out.
Storm Control is enabled for all fast Ethernet ports or for Giga ports by defining the packet type and the rate the packets are transmitted. Ports can also be
grouped to provide Storm protection for the entire group.
The system measures the incoming Broadcast, Multicast, and Unknown frame rate separately on each port, and discards frames when the rate exceeds a
user-defined rate.
The Storm Control page allows network managers to enable and configure Storm Control. To open the Storm Control page :
Click Switch > Ports > Storm Control in the Tree View to open the Storm Control page.
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Storm Control Page
The Storm Control page contains the following fields:
Interface—Indicates the interface on which storm control is being configured.
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All Fast Ethernet Ports—Indicates that storm control is enabled for all FE ports. Storm control can be applied individually to GE ports.
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Gigabit Ethernet Port—Indicates that storm control is enabled for the selected Gigabit Ethernet port. Storm control is either enabled or disabled
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for ALL FE ports.
Unknown Unicast Control—Enables moderating unknown Unicast packets on the device. The possible field values are:
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Enable—Enables moderating unknown Unicast packets on the device.
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Disable—Disables moderating unknown Unicast packets on the device.
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Unknown Multicast Control—Enables moderating unknown Multicast packet on the device. The possible field values are:
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