Users 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
Congure the CoS trac to be stopped for the specied delay.
Syntax
pfc priority priority-range
To delete the pfc priority conguration, 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 trac is mapped are
lossless by default. Trac may be interrupted due to an interface ap (going down and coming up) when you
recongure 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 congured priority trac (as DCBX detects) to apply PFC.
Data Center Bridging (DCB)
107