Cisco Cisco IOS Software Release 12.2(14)S

This document describes the Cisco Resource Reservation Protocol (RSVP) scalability enhancements. It 
identifies the supported platforms, provides configuration examples, and lists related Cisco IOS 
command line interface (CLI) commands.

This document includes the following major sections:

RSVP typically performs admission control, classification, policing, and scheduling of data packets on 
a per-flow basis and keeps a database of information for each flow. RSVP scalability enhancements let 
you select a resource provider (formerly called a quality of service (QoS) provider) and disable data 
packet classification so that RSVP performs admission control only. This facilitates integration with 
service provider (differentiated services (DiffServ)) networks and enables scalability across enterprise 
networks.

Class-based weighted fair queueing (CBWFQ) provides the classification, policing, and scheduling 
functions. CBWFQ puts packets into classes based on the differentiated services code point (DSCP) 
value in the packet’s IP header, thereby eliminating the need for per-flow state and per-flow processing.

12.2(2)T

This feature was introduced.

12.2(14)S

This feature was integrated into Cisco IOS Release 12.2(14)S.