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5.7.8 flowcontrol
The flowcontrol interface configuration command configures the Flow Control on a given interface. To
restore the default, use the no form of this command.
Syntax
flowcontrol {auto | on | off | rx | tx}
no flowcontrol
auto—Enables auto-negotiation of Flow Control.
on—Enables Flow Control.
off—Disables Flow Control.
rx—Enables receiving pause frames only.
tx—Enables transmitting pause frames only
Default Configuration
Flow Control is off.
Command Mode
Interface configuration (Ethernet, port-channel) mode
User Guidelines
Flow Control will operate only if duplex mode is set to FULL. Back Pressure will operate only if duplex
mode is set to HALF.
When Flow Control is ON, the head-of-line-blocking mechanism of this port is disabled.
If a link is set to NOT use auto-negotiation, the other side of the link must also be configured to not use
auto-negotiation.
To select auto, ensure negotiation for Flow Control is enabled.
Example
In the following example, Flow Control is enabled on e5.
Console(config)# interface ethernet e5
Console(config-if)# flowcontrol on
5.7.9 mdix
The mdix interface configuration command enables automatic crossover on a given interface. To disable
automatic crossover, use the no form of this command.
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