Cisco Cisco IOS Software Release 12.2(27)SBC

© 2006 Cisco Systems, Inc. All rights reserved.

The ICMP Unreachable Rate Limiting User Feedback feature enables you to clear and display packets 
that have been discarded because of an unreachable destination and to configure a threshold interval for 
triggering error messages. When message logging is generated, it displays on your console.

Configuration information is included in the “Configuring IP Services” module of the

Application Services Configuration Guide, Release 12.4T,

at the following URL:

The following sections provide information about this feature:

ICMP Overview

Denial of Service Attack

Configuring ICMP Unreachable Rate Limiting User Feedback

Disabling ICMP Services: Example

For a complete list of features included in the “Configuring IP Services” module, see the Feature 
Information Table located toward the end of the module.

Command reference information is included in the Cisco IOS IP Application Services Command 
Reference,

Release 12.2SB, at the following URL:

The following commands are new or modified for this feature: