Deployment Guide

INTERFACE mode

dcb-map name

3 Disable PFC.

DCB MAP mode

no pfc mode on

4 Return to interface conguration mode.

DCB MAP mode

exit

5 Apply the DCB map, created to disable the PFC operation, on the interface.

INTERFACE mode

dcb-map {name | default}

6 Congure the port queues that still function as no-drop queues for lossless trac. Range: 0-3. Separate queue values with a comma;

specify a priority range with a dash; for example: pfc no-drop queues 1,3 or pfc no-drop queues 2-3 Default: No lossless queues are

congured.

INTERFACE mode

pfc no-drop queuesqueue-range

The maximum number of lossless queues globally supported on a port is 2.

You cannot congure PFC no-drop queues on an interface on which a DCB map with PFC enabled has been applied, or which is

already congured for PFC using the pfc priority command.

Data Center Bridging: Default Conguration

Before you congure PFC and ETS on a switch see the priority group setting taken into account the following default settings:

DCB is enabled.

PFC and ETS are globally enabled by default.

The default dot1p priority-queue assignments are applied as follows:

Dell(conf)#do show qos dot1p-queue-mapping

Dot1p Priority : 0 1 2 3 4 5 6 7

Queue : 0 0 0 1 2 3 3 3

Dell(conf)#

NOTE

: In Dell Networking OS we support 4 data queues.

PFC is not applied on specic dot1p priorities.

ETS: Equal bandwidth is assigned to each port queue and each dot1p priority in a priority group.

Data Center Bridging (DCB)