Reference Guide

460 | Data Center Bridging

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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).

PFC and link-level flow control cannot be enabled at the same time on an interface.

Commands

pfc no-drop queues

Configure the port queues that will 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

Defaults

No lossless queues are configured.

Command Modes

INTERFACE

Command

History

Usage

Information

The maximum number of lossless queues globally supported on the switch is two.

Table 13-1 lists the dot1p priority-queue assignments.

dcb-input Create a DCB input policy.

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

Range: 0 to 3.

Version 8.3.12.0 Introduced on the S4810.

Version 8.3.16.0 Introduced on MXL 10/40GbE Switch IO Module

Table 13-1. dot1p Priority-Queue Assignments

dot1p Value in the Incoming Frame Egress Queue Assignment