dot1p Value in the
Incoming Frame
Description heading
0
0
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
DCB INPUT POLICY
Command
History
Version 9.2(0.0)
Introduced on the M I/O Aggregator. This command is
supported in Programmable-Mux (PMUX) mode only.
Version 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.
PMUX Mode of the MXL 10/40GbE Switch I/O Module
1437