AS5800-EC Series CLI Reference Guide R02

Chapter 22 | Data Center Bridging Commands
Priority-based Flow Control Commands
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pfc priority Use this command to enable PFC for specified priorities. Use the no form to disable
PFC for specified priorities.
Syntax
[no] pfc priority enable priority-list
priority-list – Priority identifier, specified as a single number, a range of
consecutive numbers separated by a hyphen, or multiple numbers
separated by commas. (Range: 0-7)
Default Setting
Enabled for CoS value 3
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ If a priority list has already been created by this command, then any priorities
specified by subsequent commands are added the existing list.
◆ When PFC is enabled, the interface will not pause any CoS priority frames
unless there is at least one pause priority set by this command.
◆ Each priority is configured as drop (PFC disabled) or no-drop (PFC enabled). If a
priority designated as no-drop is congested, that priority is paused. The same
no-drop priorities must be configured across the network in order to ensure
end-to-end lossless behavior. VLAN tagging also needs to be turned on in order
to carry the PFC priority settings through the network.
Example
The following example configures port 5 to enable PFC for priorities 3 and 5:
Console(config)#interface ethernet 1/5
Console(config-if)#pfc priority enable 3,5
Console(config-if)#
clear pfc statistics Use this command to clear PFC statistics.
Syntax
clear pfc statistics [interface interface]
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-54)
port-channel channel-id (Range: 1-27)