Cisco Cisco IOS Software Release 12.4(6)T

© 2006 Cisco Systems, Inc. All rights reserved.

The Management Plane Protection (MPP) feature in Cisco IOS software provides the capability to 
restrict the interfaces on which network management packets are allowed to enter a device. The MPP 
feature allows a network operator to designate one or more router interfaces as management interfaces. 
Device management traffic is permitted to enter a device only through these management interfaces. 
After MPP is enabled, no interfaces except designated management interfaces will accept network 
management traffic destined to the device.  

Restricting management packets to designated interfaces provides greater control over management of 
a device, providing more security for that device. Other benefits include improved performance for data 
packets on nonmanagement interfaces, support for network scalability, need for fewer access control 
lists (ACLs) to restrict access to a device, and management packet floods on switching and routing 
interfaces are prevented from reaching the CPU.

Your Cisco IOS software release may not support all of the features documented in this module. To reach 
links to specific feature documentation in this module and to see a list of the releases in which each feature is 
supported, use the 

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 

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