Cisco Systems EA6500 Manual De Usuario

This chapter describes how to configure the traffic storm control feature on the Catalyst 6500 series 
switches. Release 12.1(12c)E1 and later releases support traffic storm control. For earlier releases, refer 
to 

For complete syntax and usage information for the commands used in this chapter, refer to the 
Catalyst 6500 Series Switch Cisco IOS Command Reference publication. 

The WS-X6548-GE-TX, WS-X6548V-GE-TX, WS-X6148-GE-TX, and WS-X6148V-GE-TX 
switching modules do not support traffic storm control.

This chapter consists of these sections:

A traffic storm occurs when packets flood the LAN, creating excessive traffic and degrading network 
performance. The traffic storm control feature prevents LAN ports from being disrupted by a broadcast, 
multicast, or unicast traffic storm on physical interfaces. 

Traffic storm control (also called traffic suppression) monitors incoming traffic levels over a 1-second 
traffic storm control interval and, during the interval, compares the traffic level with the traffic storm 
control level that you configure. The traffic storm control level is a percentage of the total available 
bandwidth of the port. Each port has a single traffic storm control level that is used for all types of traffic 
(broadcast, multicast, and unicast). 

The switch supports multicast and unicast traffic storm control only on Gigabit Ethernet LAN ports.

The switch supports broadcast traffic storm control on all LAN ports.

Traffic storm control does not suppress spanning tree packets. Except for spanning tree packets, 
traffic storm control does not differentiate between control traffic and data traffic.