Understanding Quality of Service on the Catalyst 6500 Switch

By Cisco Systems

Posted August 2009



This document explains the Quality of Service (QoS) capabilities available in the Catalyst 6500 Switch as it applies to PFC QoS for IPv4 data. This document does not cover QoS features on the WAN linecards like the FlexWAN, OSM and SIP modules, nor does it cover QoS for MPLS. This document covers QoS configuration capabilities and provides some examples of QoS implementation. It focuses on shipping hardware as of the date of this publication.


This paper is not meant to be a configuration guide. Configuration examples are used throughout this paper to assist in the explanation of QoS features of the Catalyst 6500 hardware and software. This paper uses Cisco IOS configuration examples when required.



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