Administrator Guide

Related
Commands
show hardware pfc-nodrop-priority — displays the packets drop count corresponding to the priority.
pfc no-drop queues
Configure the port queues that still function as no-drop queues for lossless traffic.
Syntax
pfc no-drop queues queue-range
To remove the no-drop port queues, use the no pfc no-drop queues command.
Parameters
queue-range Enter the queue range. Separate the 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 7 or pfc no-drop queues 0,7. The range is from 0 to 3.
Defaults No lossless queues are configured.
Command Modes INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6100–ON.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
● When you configure lossless queues on an interface, PFC priority configuration is not allowed on the
dcb-map profile applied on the interface.
● The maximum number of lossless queues globally supported on the switch is two.
The following lists the dot1p priority-queue assignments.
dot1p Value in
the Incoming
Frame
Description heading
0 1
1 0
2 2
3 3
4 4
5 5
6 6
7 7
● Before configuring the port queues to function as no-drop queues, you must first apply the dcb-map
map with pfc mode off. To apply the dcb-map with pfc mode off, use the following commands:
dcb-map pfcoff and no pfc mode on.
478
Data Center Bridging (DCB)