Dell Force10 S4810P - Port-Based Qos Configurations; Implementation Information

Quality of Service (QoS) | 819
Figure 39-1. Dell Force10 QoS Architecture
Implementation Information
The Dell Force10 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, and SONET line cards
support only port-based QoS.
Port-based QoS Configurations
You can configure the following QoS features on an interface:
Note: Egress rate shaping and ingress rate policing cannot be simultaneously used on the same VLAN.
Packet
Classification
(ACL)
Ingress
Packet
Processing
Marking
(DiffServ,
802.1p, Exp)
Rate Policing
Buffers 
Class-based
Queues
Congestion
Avoidance
(WRED)
Egress
Packet
Processing
Traffic
Shaping
Egress
Congestion Management
(WFQ Scheduling)
Rate Limiting
Buffers 
Class-based
Queues
Switching