18.1. PFC Commands

Command Purpose

Use this command to enable or disable priority-based flow control function on the interface.

Prerequisites

Command Syntax

priority-flow-control mode (on|auto)

no priority-flow-control

Command Mode

Interface Configuration

Default

Enable priority-based flowcontrol on priority 3

Usage

Use the priority-flow-control interface Configuration command to set the interface’s ability to send pause frames to on or off on the specialed priorities.

Examples

This example shows how to enable priority-based flowcontrol on the interface:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# priority-flow-control mode on

This example shows how to enable priority-based flowcontrol on the interface(auto negotiating with the peer):

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# priority-flow-control mode auto

Related Commands

None

Command Purpose

Use this command to enable or disable priority-based flow control function on which priority.

Prerequisites

Command Syntax

priority-flow-control enable priority {0|1|2|3|4|5|6|7}

no priority-flow-control enable priority {0|1|2|3|4|5|6|7}

Command Mode

Interface Configuration

Default

Enable priority-based flowcontrol on priority 3

Usage

Use the priority-flow-control enable priority interface Configuration command to set the interface’s ability to send pause frames to on or off on which priorities.

Examples

This example shows how to enable priority-based flowcontrol on which priorities:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# priority-flow-control enable priority 1 3 4 7

Related Commands

priority-flow-control mode (on|auto)

lldp tlv 8021-org-specific dcbx

Command Purpose

Use this command to display priority-based flow control information.

Prerequisites

Command Syntax

show priority-flow-control (interface IFNAME| )

Command Mode

Privileged EXEC

Default

None

Usage

Use the command to display priority-based flowcontrol admin-config and operation-config information of each port.

Examples

This examples shows how to display priority-based flowcontrol information:

Switch# show priority-flow-control

Port             PFC-enable          PFC-enable on priority
               admin    oper        admin     oper
---------------------------------------------------------------
eth-0-1        off      off         off       off
.
.
.
eth-0-n       off      off         off       off 

Switch# show priority-flow-control interface eth-0-1

Port             PFC-enable          PFC-enable on priority
               admin    oper        admin     oper
---------------------------------------------------------------
eth-0-1        off      off         off       off

Related Commands

None

Command Purpose

Use this command to display the statistic of priority-based flowcontrol.

Prerequisites

Command Syntax

show priority-flow-control statistics (IFNAME| )

Command Mode

Privileged EXEC

Default

None

Usage

Use the command to display the counting information of pause frames for priority-based flowcontrol.

Examples

This example shows how to display the counting information of pause frames for priority-based flowcontrol:

Switch# show priority-flow-control statistics interface eth-0-1
Port               RxPause          TxPause
--------------------------------------------------
eth-0-1            0                0

Switch# show priority-flow-control statistics                  
Port               RxPause          TxPause
--------------------------------------------------
eth-0-1            0                0     
.
.
.
eth-0-n            0                0 

Related Commands

None

Command Purpose

Use this command to configure time precision for priority-based flowcontrol deadlock

Prerequisites

Command Syntax

priority-flow-control deadlock precision PRECISION

no priority-flow-control deadlock precision

Command Mode

Global Config

Default

10

Usage

Use the command to set time precision for priority-based flowcontrol deadlock

Examples

This example shows how to configure priority-based flow control deadlock precision:

Switch# configure terminal
Switch(config)# priority-flow-control deadlock precision 20

This example shows how to revert the priority-based flow control deadlock precision to 10:

Switch# configure terminal
Switch(config)# no priority-flow-control deadlock precision

Related Commands

None

Command Purpose

Use this command to configure port priority-based flowcontrol deadlock detection

Prerequisites

Command Syntax

priority-flow-control deadlock priority PRI1 (PRI2| ) (detect DETECT recover RECOVER| )

no priority-flow-control deadlock priority (PRI1| ) (PRI2| )

Command Mode

Interface Configuration

Default

None

Usage

Use the command to set port priority-based flowcontrol deadlock detection

Examples

This example shows how to configure port priority-based flowcontrol deadlock detection:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# priority-flow-control deadlock priority 5 6 detect 20 recover 300

None

Related Commands

None

Command Purpose

Use this command to configure port priority-based flowcontrol deadlock limitation

Prerequisites

Command Syntax

priority-flow-control deadlock limit priority PRI1 (PRI2| ) (frequency FREQUENCY period PERIOD| )

no priority-flow-control deadlock limit priority (PRI1| ) (PRI2| )

Command Mode

Interface Configuration

Default

None

Usage

Use the command to set port priority-based flowcontrol deadlock limitation

Examples

This example shows how to configure port priority-based flowcontrol deadlock limitation:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# priority-flow-control deadlock limit priority 7 frequency 100 period 5

Related Commands

None

Command Purpose

Use this command to display priority-based flowcontrol deadlock status information

Prerequisites

Command Syntax

show priority-flow-control deadlock status

Command Mode

Privileged EXEC

Default

None

Usage

Use the command to display priority-based flowcontrol deadlock status information

Examples

This example shows how to display priority-based flowcontrol deadlock status information:

Switch# show priority-flow-control deadlock status

Related Commands

None

Command Purpose

Use this command to display priority-based flowcontrol deadlock statistics information

Prerequisites

Command Syntax

show priority-flow-control deadlock statistics (interface IFPHYSICAL| )

Command Mode

Privileged EXEC

Default

None

Usage

Use the command to display priority-based flowcontrol deadlock statistics information

Examples

This example shows how to display priority-based flowcontrol deadlock statistics information:

Switch# show priority-flow-control deadlock statistics interface eth-0-1

Related Commands

None

Command Purpose

Use this command to clear priority-based flowcontrol deadlock statistics information

Prerequisites

Command Syntax

clear priority-flow-control deadlock statistics (interface IFPHYSICAL| )

Command Mode

Privileged EXEC

Default

None

Usage

Use the command to clear priority-based flowcontrol deadlock statistics information

Examples

This example shows how to clear priority-based flowcontrol deadlock statistics information:

Switch# clear priority-flow-control deadlock statistics interface eth-0-1

Related Commands

None