Implementation Information - Dell S4820T Configuration Manual

Figure 105. Dell Networking QoS Architecture

Implementation Information

The Dell Networking QoS implementation complies with IEEE 802.1p User Priority Bits for QoS Indication.
It also implements these Internet Engineering Task Force (IETF) documents:
• 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 PHB
You cannot configure port-based and policy-based QoS on the same interface.
790
Quality of Service (QoS)