Configuring Traffic Storm Control; Understanding Traffic Storm Control - Cisco 7604 Configuration Manual

Configuring Traffic Storm Control

This chapter describes how to configure the traffic storm control feature on the Cisco 7600 series routers.
For complete syntax and usage information for the commands used in this chapter, refer to the Cisco IOS
Note
Master Command List, Release 12.2SX at this URL:
http://www.cisco.com/en/US/docs/ios/mcl/122sxmcl/12_2sx_mcl_book.html
This chapter consists of these sections:
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For additional information (including configuration examples and troubleshooting information), see the
Tip
documents listed on this page:
http://www.cisco.com/en/US/products/hw/routers/ps368/tsd_products_support_series_home.html

Understanding Traffic Storm Control

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).
Traffic storm control monitors the level of each traffic type for which you enable traffic storm control in
1-second traffic storm control intervals. Within an interval, when the ingress traffic for which traffic
storm control is enabled reaches the traffic storm control level that is configured on the port, traffic storm
control drops the traffic until the traffic storm control interval ends.
OL-4266-08
Understanding Traffic Storm Control, page 39-1
Default Traffic Storm Control Configuration, page 39-3
Traffic Storm Control Guidelines and Restrictions, page 39-3
Enabling Traffic Storm Control, page 39-4
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
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