priority-flow-control enable

Enables priority flow control (PFC) globally or on an individual port.
Syntax
priority-flow-control enable
no priority-flow-control enable
Command Default

PFC is disabled (globally and on all ports).

Modes

Global configuration mode

Interface configuration mode

Usage Guidelines

This command is supported only on RUCKUS ICX 7250 ICX 7750, andICX 7450 devices. This command is not supported on RUCKUS ICX 7150 or ICX 7650 devices.

To enable global PFC, symmetrical-flow-control (SFC) must be disabled.

You must enable PFC globally before you configure it for priority groups.

In global configuration mode, configuring the priority-flow-control enable command enables PFC globally; in interface configuration mode, configuring the command enables PFC on a port. You can configure the priority-flow-control enable command in interface configuration mode to enable both PFC transmit and receive, which means PFC is both honored and generated. PFC must be enabled on at least one priority group before you can configure the priority-flow-control enable command on an interface.

Priority flow control and 802.3x flow control are mutually exclusive; therefore, configuring the priority-flow-control enable command disables 802.3x in both transmit and receive directions.

The no form of the command restores the default flow-control settings in global configuration mode and disables PFC on the interface in interface configuration mode.

Examples

The following example enables PFC globally. 

Device(config)# priority-flow-control enable

The following example enables PFC on an interface. 

Device(config-if-e10000-1/1/1)# priority-flow-control enable
History
Release version Command history
08.0.10 This command was introduced.
08.0.20 This command was modified to add enabling PFC on a port.
08.0.60 Added a usage guideline concerning the support of this command and that this command is not supported on the RUCKUS ICX 7150.
08.0.70 Added a usage guideline concerning the support of this command and that this command is not supported on the RUCKUS ICX 7650.
Parent topic: Commands O, P, Q, R, and Sa through Sh