• RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 Headers• RFC 2475, An Architecture for Differentiated Services• RFC 2597, Assured Forwarding PHB Group• RFC 2598, An Expedited Forwarding PHBYou cannot configure port-based and policy-based QoS on the same interface.Port-Based QoS ConfigurationsYou can configure the following QoS features on an interface.• Setting dot1p Priorities for Incoming Traffic• Configuring Port-Based Rate Policing• Configuring Port-Based Rate ShapingSetting dot1p Priorities for Incoming TrafficDell Networking OS places traffic marked with a priority in a queue based on the following table.If you set a dot1p priority for a port-channel, all port-channel members are configured with the same value. You cannot assign adot1p value to an individual interface in a port-channel.Table 40. dot1p-priority Values and Queue Numbersdot1p Queue Number0 11 02 03 14 25 26 37 3• Change the priority of incoming traffic on the interface.dot1p-priorityExample of Configuring a dot1p Priority on an InterfaceDell#configure terminalDell(conf)#interface tengigabitethernet 1/1Dell(conf-if-te-1/1)#switchportDell(conf-if-te-1/1)#dot1p-priority 1Dell(conf-if-te-1/1)#endHonoring dot1p Priorities on Ingress TrafficBy default, Dell Networking OS does not honor dot1p priorities on ingress traffic.You can configure this feature on physical interfaces and port-channels, but you cannot configure it on individual interfaces in a portchannel.You can configure service-class dynamic dot1p from CONFIGURATION mode, which applies the configuration to all interfaces. ACONFIGURATION mode service-class dynamic dot1p entry supersedes any INTERFACE entries. For more information, refer toMapping dot1p Values to Service Queues.Quality of Service (QoS) 579
