Users Guide

Layer 2 Switching Commands 397
To enable auto-negotiation on a port, and configure the speed or duplex, it is
necessary to enter the speed or duplex command using the auto parameter.
The port will negotiate the medium, speed, and duplex settings with the link
partner.
To disable auto-negotiation on a port, it is necessary to enter the speed
command without using the auto parameter. 10G/40G fiber ports do not
support auto-negotiation and therefore require the operator to enter the
speed command followed by the duplex full command and with the desired
operating bandwidth if not already configured.
Example
The following example configures TenGigabit Ethernet port Te 1/0/5 to auto-
negotiate full and half duplex capability and speed.
console(config)# interface te1/0/5
console(config-if-Te1/0/5)# speed auto 1000 100
console(config-if-Te1/0/5)# duplex auto both
flowcontrol
Use the flowcontrol command in Global Configuration mode to configure
the flow control. To disable flow control, use the no form of this command.
Syntax
flowcontrol receive {on | off}
no flowcontrol receive
Default Configuration
Flow Control is enabled by default.
Command Mode
Global Configuration and Interface Configuration modes