Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 728

www.dell.com | support.dell.com Figure 35-9. Constructing Policy-based QoS Configurations Interface Input Service Policy 0 Input Policy Map 7 Input Policy Map Output Service Policy 0 Output Policy Map 7 Output Policy Map Class Map DSCP Input QoS Policy L3 ACL L3 Fields Rate Policing Outgoing Marking Output QoS Policy Rate Limiting WRED B/W % Classify Traffic Class maps differentiate traffic so that you can apply separate quality of service policies to each class. For both class maps, Layer 2 and Layer 3, FTOS matches packets against match criteria in the order that you configure them. Create a Layer 3 class map A Layer 3 class map differentiates ingress packets based on DSCP value or IP precedence, and characteristics defined in an IP ACL. You may specify more than one DSCP and IP precedence value, but only one value must match to trigger a positive match for the class map. 1. Create a match-any class map using the command class-map match-any or a match-all class map using the command class-map match-all from CONFIGURATION mode, as shown in Figure 35-10. 2. Once you create a class-map, FTOS places you in CLASS MAP mode. From this mode, specify your match criteria using the command match ip, as shown in Figure 35-10. Match-any class maps allow up to five ACLs, and match-all class-maps allow only one ACL. 3. After you specify your match criteria, link the class-map to a queue using the command service-queue from POLICY MAP mode, as shown in Figure 35-10. 728 | Quality of Service (QoS)