Implementation Information; Port-Based Qos Configurations; Setting Dot1P Priorities For Incoming Traffic - Dell C9000 Series Networking Configuration Manual

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Table of Contents

Enabling Strict-Priority Queueing

Weighted Random Early Detection

Explicit Congestion Notification

Using A Configurable Weight for WRED and ECN

Pre-Calculating Available QoS CAM Space

SNMP Support for Buffer Statistics Tracking

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 and IPv6 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.

You can configure the following QoS features on an interface.

You cannot simultaneously use egress rate shaping and ingress rate policing on the same virtual

local area network (VLAN).

Honoring dot1p Priorities on Ingress Traffic

Configuring Port-Based Rate Policing

Configuring Port-Based Rate Shaping

Setting dot1p Priorities for Incoming Traffic

The system assigns 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 a dot1p value to an individual interface in a port-channel.

Table 71. dot1p-priority Ingress Values and Queue Numbers

Packet Dot1p on Ingress Packet

Queue Number on C9000 Series

Quality of Service (QoS)