Cisco 350 Series Administration Manual page 494

Security
Storm Control
STEP 4
STEP 1
STEP 2
STEP 3
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
• Shutdown on Storm—Select to shutdown a port when a storm occurs on the port. If
this is not selected extra traffic is discarded.
Broadcast Storm Control
• Storm Control State—Select to enable Storm Control for Broadcast packets.
• Rate Threshold—Enter the maximum rate at which unknown packets can be
forwarded. This value can be entered by Kbits/sec or By percentage of the total
available bandwidth.
• Trap on Storm—Select to send a trap when a storm occurs on a port. If this is not
selected, the trap is not sent.
• Shutdown on Storm—Select to shutdown a port when a storm occurs on the port. If
this is not selected extra traffic is discarded.
Click Apply. Storm control is modified, and the Running Configuration file is updated.
Storm Control Statistics
To view Storm Control statistics:
Click Security > Storm Control > Storm Control Statistics.
Select an interface.
Enter the Refresh Rate—Select the how often the statistics should be refreshed. The available
options are:
• No Refresh—Statistics are not refreshed.
• 15 Sec—Statistics are refreshed every 15 seconds.
• 30 Sec—Statistics are refreshed every 30 seconds.
• 60 Sec—Statistics are refreshed every 60 seconds.
The following statistics are displayed for Unknown Unicast, Multicast and Broadcast storm
control:
• Multicast Traffic Type—(Only for Multicast traffic) Registered or Unregistered.
• Bytes Passed—Number of bytes received.
• Bytes Dropped—Number of bytes dropped because of storm control.
• Last Drop Time—Time that the last byte was dropped.
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