Administrator Guide

pfc mode on
Enable the PFC configuration on the port so that the priorities are included in DCBX negotiation with peer PFC devices.
Syntax
pfc mode on
To disable the PFC configuration, use the no pfc mode on command.
Defaults PFC mode is on.
Command Modes DCB MAP
Supported Modes Programmable-Mux (PMUX)
Command
History
Version Description
9.4(0.0) Introduced on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
Usage
Information
By applying a DCB input policy with PFC enabled, you enable PFC operation on ingress port traffic. To
achieve complete lossless handling of traffic, also enable 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.
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
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
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
Data Center Bridging (DCB) 97