Administrator Guide

Version Description
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.
pfc-nodrop-priority l2-dlf drop
Configure to drop the unknown unicast packets flooding on lossless priorities.
Syntax
pfc-nodrop-priority l2-dlf drop
To disable the feature, use the no pfc-nodrop-priority l2-dlf drop command.
Parameters
l2-dlf Enter the keywords l2-dlf to drop flooding traffic on lossless priorities.
drop Enter the keyword drop to enable the drop action.
Command Modes CONFIGURATION
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(0.0) Introduced on the C9010, S6000, S6000–ON, Z9100–ON and S6100–ON.
Related
Commands
show hardware pfc-nodrop-priority — displays the packets drop count corresponding to the priority.
448 Data Center Bridging (DCB)