Reference Guide

Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
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
If you configure PFC on a 40GbE port, count the 40GbE port as four PFC-enabled ports in the
pfc-port number you enter in the command syntax.
To achieve lossless PFC operation, the PFC port count and queue number used for the reserved
buffer size that is created must be greater than or equal to the buffer size required for PFC-
enabled ports and lossless queues on the switch.
You must reload the stack or a specified stack unit (use the reload command in EXEC
Privilege mode) for the PFC buffer configuration to take effect.
Related
Commands
dcb stack-unit pfc-buffering pfc-port pfc-queues — configures the PFC buffer for all switches
in the stack.
description
Enter a text description of the DCB policy (PFC input or ETS output).
S4820T
Syntax
description text
To remove the text description, use the no description command.
Parameters
text Enter the description of the output policy. The maximum is 32
characters.
Defaults none
Command Modes
• DCB INPUT POLICY
• DCB OUTPUT POLICY
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
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.
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