Chapter 54 Configuring Storm Control - Cisco Catalyst 4500 Series Configuration Manual

Chapter 54 Configuring Storm Control
Enabling Broadcast Storm Control
To enable storm control, perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# interface interface-id
Step 3
Switch(config-if)# storm-control
broadcast level [high level]
Step 4
Switch(config-if)# storm-control action
{shutdown | trap}
Step 5
Switch(config-if)# exit
Step 6
Switch(config)# end
Step 7
Switch# show storm-control [interface]
broadcast
Step 8
Switch# copy running-config
startup-config
The following example shows how to enable storm control on interface:
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# interface fa3/1
Switch(config-if)# storm-control broadcast level 50
Switch(config-if)# end
Switch# show storm-control
Interface
---------
Fi3/1
Switch# show int fa2/1 capabilities
FastEthernet2/1
Model:
Type:
Speed:
OL-25340-01
Purpose
Enters global configuration mode.
Enters interface configuration mode and enter the port to configure.
Configures broadcast storm control.
Specifies the upper threshold levels for broadcast traffic. The storm
control action occurs when traffic utilization reaches this level.
(Optional) Specifies the falling threshold level. The normal
transmission restarts (if the action is filtering) when traffic drops
below this level for interfaces that support software-based
suppression.
Note
Note
Specifies the action to be taken when a storm is detected.
The default is to filter out the broadcast traffic and not to send out
traps.
The shutdown keyword sets the port to error-disable state during a
storm. If the recover interval is not set, the port remains in shutdown
state.
Returns to configuration mode.
Returns to privileged EXEC mode.
Displays the number of packets suppressed.
(Optional) Saves your entries in the configuration file.
Filter State Broadcast Multicast Level
------------- --------- --------- -----
Forwarding Enabled
WS-X4148-RJ45V-RJ-45
10/100BaseTX
10,100,auto
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
For ports that perform hardware-based suppression, the
lower threshold is ignored.
For the Catalyst 4500-X Series Switch, on ports operating at
1Gigabit, thresholds less than 0.02% are not supported.
End with CNTL/Z.
Disabled 50.00%
Enabling Broadcast Storm Control
54-3