Administrator Guide

Usage
Information
Used to enable honoring of PFC frames on all queues (lossy and lossless) and to initiate PFC storm
control on all queues, when PFC storm control is configured with PFC asymmetric on an interface.
1. Enable pfc asymmetric on interface.
2. Configure pfc storm control to disable the queue if the pfc storm is detected.
3. Clear the queue disable state when the queue is disabled during the pfc storm detection.
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.
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.
476 Data Center Bridging (DCB)