Addendum

PFC on all DCB egress ports or configure the dot1p priority-queue assignment of
PFC priorities to lossless queues (refer to pfc no-drop queues).
To disable PFC operation on an interface, enter the no pfc mode on command in
DCB Input Policy Configuration mode. PFC is enabled and disabled as global DCB
operation is enabled (
dcb-enable) or disabled (no dcb-enable).
You cannot enable PFC and link-level flow control at the same time on an
interface.
Related
Commands
dcb-input — creates a DCB input policy.
pfc no-drop queues
Configure the port queues that still function as no-drop queues for lossless traffic.
Syntax
pfc no-drop queues queue-range
To remove the no-drop port queues, use the no pfc no-drop queues
command.
Parameters
queue-range Enter the queue range. Separate the queue values with a
comma; specify a priority range with a dash; for example,
pfc no-drop queues 1,3 or pfc no-drop queues
2-3
. The range is from 0 to 3.
Defaults No lossless queues are configured.
Command
Modes
INTERFACE
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
The maximum number of lossless queues globally supported on the switch is two.
• The following lists the dot1p priority-queue assignments.
dot1p Value in the
Incoming Frame
Description heading
0 0
1 0
2 0
3 1
4 2
5 3
Data Center Bridging (DCB)
293