Administrator Guide

dot1p Value in
the Incoming
Frame
Description heading
1 0
2 0
3 1
4 2
5 3
6 3
7 3
pfc priority
Configure the CoS traffic to be stopped for the specified delay.
Syntax
pfc priority priority-range
To delete the pfc priority configuration, 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 Interface
Supported Modes Programmable-Mux (PMUX)
Command
History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
You can enable any number of 802.1p priorities for PFC. Queues to which PFC priority traffic is mapped
are lossless by default. Traffic may be interrupted due to an interface flap (going down and coming up)
when you reconfigure 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 I/O Aggregator switch is four.
A PFC peer must support the configured priority traffic (as DCBX detects) to apply PFC.
priority-group
To use with an ETS output policy, create an ETS priority group.
Syntax
priority-group group-name
To remove the priority group, use the no priority-group command.
Parameters
group-name Enter the name of the ETS priority group. The maximum is 32 characters.
Defaults none
98 Data Center Bridging (DCB)