Administrator Guide

Security Commands 1046
Example
The following example configures any port to shut down if the received
multicast traffic rate exceeds 20% of link bandwidth:
console(config)#interface range gi1/0/1-24
console(config-if)#storm-control multicast level 20
console(config-if)#storm-control multicast action shutdown
console(config-if)#exit
storm-control unicast
Use the storm-control unicast command in Interface Configuration mode to
enable storm control for an interface. Unicast storm control limits the
number of unicast destination lookup failures (DLFs). Use the no form of the
command to disable unicast storm control or to return the configuration to
the default.
Syntax
storm-control unicast [level level |rate rate ]
no storm-control unicast [level | rate]
• level— The configured rate as a percentage of link bandwidth (Range: 0-
100)
•
rate —The configured rate in packets per second. (Range: 0-14880000)
Default Configuration
By default, unicast storm control is not enabled on any interfaces.
If unicast storm-control is enabled, the rate of L2 unicast destination lookup
failures received on an interface increases beyond the configured threshold,
traffic will be dropped.
The default threshold for unicast traffic is 5% of link bandwidth.
Command Mode
Interface Configuration (Ethernet) mode, Interface Range mode
2CSNXXX_SWUM204.book Page 1046 Monday, January 25, 2016 1:25 PM