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Modular QoS CLI Classification

The Quality of Service mechanisms that have been added to the Cisco IOS all had their own set of classification options. For example: n Committed Access Rate (CAR) can classify packets by using: – Access lists – QoS group – DSCP – Rate limit access list n Traffic Shaping (GTS) can classify packets by using access lists n Priority Queuing (PQ) and Custom Queuing (CQ) can classify packets by using: – Access lists – Packets size – Fragment – TCP or UDP port number The Modular Quality of Service Command Line Interface (MQC) was introduced to allow any supported classification to be used with any QoS mechanism | 8 Modular QoS CLI Classification Overview This chapter focuses on the classification element of the modular QoS commandline interface. It includes the following topics Introduction to Modular QoS CLI Classification Options Network Based Application Recognition NBAR Objectives Upon completion of this module you will be able to perform the following tasks Describe the classification element of the Modular QoS CLI Describe and configure all currently supported classification options within the MQC Understand Network-based Application Recognition NBAR Monitor and troubleshoot class maps Introduction to Modular QoS CLI Objectives Upon completion of this lesson you will be able to perform the following tasks Describe the MQC concepts and structure Configure class maps Monitor and troubleshoot class maps 8-2 IP QoS Modular QoS CLI Classification Copyright 2001 Cisco Systems Inc. Modular QoS CLI The Modular QoS CLI MQC provides a modular approach to configuration of QoS mechanisms Classification is configured separately from the QoS service policy MQC also provides modularity to implementation of QoS mechanisms in the Cisco IOS - New QoS mechanisms can reuse old classification options - New QoS classification options can also be used by older QoS mechanisms 2001 Cisco Systems Inc. ClSCOcCOHl ip Oog -Modular QoS CLI Classification-5 The Quality of Service mechanisms that have been added to the Cisco IOS all had their own set of classification options. For example Committed Access Rate CAR can classify packets by using - Access lists - QoS group - DSCP - Rate limit access list Traffic Shaping GTS can classify packets by using access lists Priority Queuing PQ and Custom Queuing CQ can classify packets by using - Access lists - Packets size - Fragment - TCP or UDP port number The Modular Quality of Service Command Line Interface MQC was introduced to allow any supported classification to be used with any QoS mechanism. The separation of classification from the QoS mechanism .