Cisco Cisco IOS Software Release 12.2(33)SRE

© 2007 Cisco Systems, Inc. All rights reserved.

The Per Interface Mroute State Limit feature provides the capability to limit the amount of multicast 
route (mroute) states on an interface for different access control list (ACL)-classified sets of multicast 
traffic. This feature can be used to prevent denial-of-service (DoS) attacks, or to provide a multicast Call 
Admission Control (CAC) mechanism in network environments where all the multicast flows roughly 
utilize the same amount of bandwidth.

The Bandwidth-Based CAC for IP Multicast feature enhances the Per Interface Mroute State Limit 
feature by implementing a way to count per interface mroute state limiters using cost multipliers. This 
feature can be used to provide bandwidth-based CAC on a per interface basis in network environments 
where the multicast flows utilize different amounts of bandwidth.

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 and Catalyst OS 
software image support. To access Cisco Feature Navigator, go to 

. An 

account on Cisco.com is not required.