symmetric-flow-control enable

Enables symmetric flow control globally on all full-duplex data ports of a standalone unit or on all full-duplex data ports of a particular unit in a traditional stack.
Syntax
symmetric-flow-control enable [ unit stack-unit [ stack-unit ] ... ]
no symmetric-flow-control enable [ unit stack-unit [ stack-unit ] ... ]
Command Default

Symmetric flow control is disabled, and tail drop mode is enabled.

Parameters
unit stack-unit
Specifies one of the units in a stacking system for which symmetric flow control is to be enabled. You can specify up to eight units.
Modes

Global configuration mode

Usage Guidelines

Because flow control is enabled by default on all full-duplex ports, these ports always honor received 802.3x Pause frames, whether or not symmetric flow control is enabled.

The no form of the command disables symmetric flow control.

Examples

The following example enables symmetric flow control globally on all full-duplex data ports of a standalone unit. 

device(config)# symmetric-flow-control enable

The following example enables symmetric flow control on all full-duplex data ports of unit 4 in a traditional stack. 

device(config)# symmetric-flow-control enable unit 4
Parent topic: Commands Si - Z