Configuring Storm Control; Understanding Storm Control - Cisco Catalyst 2960 Software Configuration Manual

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Configuring Port-Based Traffic Control

This chapter describes how to configure the port-based traffic control features on the Catalyst 2960,

2960-S, or 2960-C switch. Unless otherwise noted, the term switch refers to a standalone switch and a

switch stack.

For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release.

This chapter consists of these sections:

Configuring Storm Control

Storm control prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm

on one of the physical interfaces. A LAN storm occurs when packets flood the LAN, creating excessive

traffic and degrading network performance. Errors in the protocol-stack implementation, mistakes in

network configurations, or users issuing a denial-of-service attack can cause a storm.

Configuring Storm Control, page 23-1

Configuring Protected Ports, page 23-6

Configuring Port Blocking, page 23-7

Configuring Port Security, page 23-8

Configuring Protocol Storm Protection, page 23-18

Displaying Port-Based Traffic Control Settings, page 23-19

Understanding Storm Control, page 23-1

Default Storm Control Configuration, page 23-3

Configuring Storm Control and Threshold Levels, page 23-3

Configuring Small-Frame Arrival Rate, page 23-5

Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE

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Catalyst 2960-s