HP ProCurve 7102dl Reference Manual page 631

Secure router sros command line interface

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SROS Command Line Interface Reference Guide

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.

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.

See speed [10 | 100 | auto] on page 675 for more information.

The 10BaseT, 100BaseTX, and 100BaseFX signalling 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:

ProCurve(config)#interface ethernet 0/1

ProCurve(config-eth 0/1)#full-duplex

Ethernet Interface Configuration Command Set

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