Administrator Guide
clear pfc counters
Clear the PFC TLV counters and PFC statistics on an interface or stack unit.
Syntax
clear pfc counters [interface-type | stack-unit {unit number | all } all stack-
ports all}]
Parameters
interface
interface-type
Enter the keywords port-type then the interface information. Enter the subport
number if a port is fanned-out into 10G ports.
stack-unit 
unit
number
Enter the keywords stack-unit then the stack-unit number to be cleared.
statistics Enter the keyboard statistics to clear the hardware PFC counters.
stack-ports all Enter the keywords stack-ports all to clear the counters on all stack ports.
Defaults none
Command Modes EXEC Privilege
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 If you do not use the statistics parameter, both hardware and DCBx counters clear.
pfc-asymmetric
Enables honoring of PFC frames on all queues (lossy and lossless).
Syntax
pfc-asymmetric
Defaults Enabled
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell EMC
Networking OS Command Line Reference Guide.
The following is a list of the Dell EMC Networking OS version history for this command.
Version Description
9.14(0.0) Introduced on the S5048F-ON, S6000, S6100–ON, and Z9100–ON.
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.
458 Data Center Bridging (DCB)










