Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 854

DSCP/CP bit range (in hexadecimal) 000xxx DSCP Definition BE (Best Effort) Traditional IP Precedence Best Effort Internal Queue ID DSCP/CP decimal range 0 0-7 • Enable the trust DSCP feature. POLICY-MAP-IN mode trust diffserv Honoring dot1p Values on Ingress Packets In an input QoS policy, you can configure the system to honor dot1p values on ingress packets using the Trust dot1p feature. The following table specifies the queue to which the classified traffic is sent based on the dot1p value. Table 74. Default dot1p to Queue Mapping Packet dot1p on Ingress Packet Queue ID 0 1 1 0 2 2 3 3 4 4 5 5 6 6 7 7 The dot1p value is also honored for frames on the default VLAN. For more information, refer to PriorityTagged Frames on the Default VLAN. • Enable the trust dot1p feature. POLICY-MAP-IN mode trust dot1p Mapping dot1p Values to Service Queues All traffic is by default mapped to the same queue, Queue 0. If you honor dot1p on ingress, you can create service classes based the queueing strategy in Honoring dot1p Values on Ingress Packets. You may apply this queuing strategy globally by entering the following command from CONFIGURATION mode. • All dot1p traffic is mapped to Queue 0 unless you enable service-class dynamic dot1p on an interface or globally. • Layer 2 or Layer 3 service policies supersede dot1p service classes. • Create service classes. INTERFACE mode service-class dynamic dot1p 854 Quality of Service (QoS)