Table of Contents
Advertisement
Command Reference Guide
full-duplex
Use the full-duplex command to configure the Ethernet interface for full-duplex operation. This allows the
interface to send and receive simultaneously. Use the no form of this command to return to the default
half-duplex operation.
Syntax Description
No subcommands.
Default Values
By default, all Ethernet interfaces are configured for half-duplex operation.
Command History
Release 1.1
Functional Notes
Full-duplex Ethernet is a variety of Ethernet technology currently being standardized by the IEEE. Because
there is no official standard, vendors are free to implement their independent versions of full-duplex
operation. Therefore, it is not safe to assume that one vendor's equipment will work with another.
Devices at each end of a full-duplex link have the ability to send and receive data simultaneously over the
link. Theoretically, this simultaneous action can provide twice the bandwidth of normal (half-duplex)
Ethernet. To deploy full-duplex Ethernet, each end of the link must only connect to a single device (a
workstation or a switched hub port). With only two devices on a full-duplex link, there is no need to use the
medium access control mechanism (to share the signal channel with multiple stations) and listen for other
transmissions or collisions before sending data.
Some Ethernet equipment (though rare) is unable to negotiate duplex if speed is manually
determined. To avoid incompatibilities, manually set the duplex if the speed is manually set.
Refer to
speed on page 1712
The 10Base-T, 100Base-TX, and 100Base-FX signaling systems support full-duplex operation (because
they have transmit and receive signal paths that can be simultaneously active).
Usage Examples
The following example configures the Ethernet interface for full-duplex operation:
(config)#interface ethernet 0/1
(config-eth 0/1)#full-duplex
60000CRG0-35E
Command was introduced.
for more information.
Copyright © 2012 ADTRAN, Inc.
Ethernet Interface Command Set
1612
Advertisement
Table of Contents
