Cisco Catalyst 4500 Series Administration Guide

57-3
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 57 Configuring Storm Control
Enabling Broadcast Storm Control
Enabling Broadcast Storm Control
To enable storm control, perform this task:
The following example shows how to enable storm control on interface:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface fa3/1
Switch(config-if)# storm-control broadcast level 50
Switch(config-if)# end
Switch# show storm-control
Interface Filter State Broadcast Multicast Level
--------- ------------- --------- --------- -----
Fi3/1 Forwarding Enabled Disabled 50.00%
Switch# show int fa2/1 capabilities
FastEthernet2/1
Model: WS-X4148-RJ45V-RJ-45
Type: 10/100BaseTX
Speed: 10,100,auto
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# interface interface-id
Enters interface configuration mode and enter the port to configure.
Step 3
Switch(config-if)# storm-control
broadcast level [high level]
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 For ports that perform hardware-based suppression, the
lower threshold is ignored.
Note For the Catalyst 4500-X Series Switch, on ports operating at
1Gigabit, thresholds less than 0.02% are not supported.
Step 4
Switch(config-if)# storm-control action
{shutdown | trap}
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.
Step 5
Switch(config-if)# exit
Returns to configuration mode.
Step 6
Switch(config)# end
Returns to privileged EXEC mode.
Step 7
Switch# show storm-control [interface]
broadcast
Displays the number of packets suppressed.
Step 8
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E