A traffic storm occurs when packets flood the LAN creating excessive traffic, degrading network performance. The storm control feature can limit the rate of flooding and forwarding of various types of traffic:
- MAC Address Learn Frames
- Broadcast Forwarding
- Multicast Flooding
- Unicast Flooding
To Configure Storm Control
Choose Switch > Storm Control.
Configure settings using the information in the following table as a guide.
Storm Control Configuration Parameters
Item Description Number of Frames Per Second
Sets the FPS for the selected traffic type. The configurable frame rates are exponential and range from 0 to 32 megaframes per second. Possible configurations are, for example, 1, 2, 4, or 8 kiloframes per second, and so on.
Note: The storm controller is centralized, so the configured rate specifies the maximum total number of frames per second for the entire switch (and not per port).
Learn Frames Rate
Sets the MAC address learn frame rate. Switches learn MAC addresses only from the source MAC addresses of incoming frames:
• 1K to 512K
• No Limit
Broadcast Rate
Sets the broadcast forwarding frame rate. Broadcast packets are duplicated and copies sent on multiple links to devices within a broadcast domain.
• 1K to 512K
• No Limit
Multicast Rate
Multicast traffic is flooded to a switch port because a MAC address has timed out or has not been learned by the switch.
• 1K to 512K
• No Limit
Flooded Unicast Rate
Unicast traffic is flooded to a switch port because a MAC address has timed out or has not been learned by the switch.
• 1K to 512K
• No Limit
Choose a frame rate for the following traffic types:
MAC Address Learn Frames
Broadcast Forwarding
Multicast Flooding
Unicast Flooding
Click Submit.
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