Service Manual

pfc priority
Congure the CoS trac to be stopped for the specied delay.
Syntax
pfc priority priority-range
To delete the pfc priority conguration, use the no pfc priority command.
Parameters
priority-range Enter the 802.1p values of the frames to be paused. Separate the priority values
with a comma; specify a priority range with a dash; for example, pfc priority 1,3,5-7.
The range is from 0 to 7.
Defaults none
Command Modes DCB INPUT POLICY
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 9.0.2.0 Introduced on the S6000.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.12.0 Introduced on the S4810.
Version 8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
NOTE: Please note that Dell Networking does not recommended to use this command as it has
been deprecated in the current 9.4.(0.0) release. A warning message appears when you try to run
this command indicating that you have to use the dcb-map commands in the future.
You can enable any number of 802.1p priorities for PFC. Queues to which PFC priority trac is mapped are
lossless by default. Trac may be interrupted due to an interface ap (going down and coming up) when you
recongure the lossless queues for no-drop priorities in a PFC input policy and reapply the policy to an
interface.
The maximum number of lossless queues supported on the switch is two.
A PFC peer must support the congured priority trac (as DCBX detects) to apply PFC.
show dcb
Displays the data center bridging status, the number of PFC-enabled ports, and the number of PFC-enabled queues.
Syntax
show dcb [stack-unit unit-number] [port-set port-set-number]
Parameters
unit-number Enter the DCB unit number.
port-set-number Enter the port-set number.
Command Modes EXEC Privilege
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
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Data Center Bridging (DCB)