Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 425

Figure 24-8. Marking Flows in the Same Queue with Different DSCP Values FTOS#show run class-map ! class-map match-any example-flowbased-dscp match ip access-group test set-ip-dscp 2 match ip access-group test1 set-ip-dscp 4 match ip precedence 7 set-ip-dscp 1 FTOS#show run qos-policy-input ! qos-policy-input flowbased set ip-dscp 3 Display Configured Class Maps and Match Criteria To display all class-maps or a specific class map, use the show qos class-map command from EXEC Privilege mode. FTOS Behavior: An explicit deny any rule in a Layer 3 ACL used in a (match any or match all) class-map creates a default to Queue 0 entry in the CAM, which causes unintended traffic classification. Create a QoS Policy There are two types of QoS policies: input and output. Input QoS policies regulate Layer 3 and Layer 2 ingress traffic. The regulation mechanisms for input QoS policies are rate policing and setting priority values. There are two types of input QoS policies: Layer 3 and Layer 2. • Layer 3 QoS input policies allow you to rate police and set a DSCP. • Layer 2 QoS input policies allow you to rate police and set a dot1p value. Output QoS policies regulate Layer 3 egress traffic. The regulation mechanisms for output QoS policies are rate shaping and weighted random early detection (WRED). Note: When changing a service-queue configuration in a QoS policy map, all QoS rules are deleted and re-added automatically to ensure that the order of the rules is maintained. As a result, the Matched Packets value shown in the show qos statistics command is reset. Create an Input QoS Policy To create an input QoS policy, follow these steps: Quality of Service (QoS) | 423