Avaya Configuring Ethernet, FDDI, and Token Ring Services Manual de usuario descargar pdf (Pagina 32)

Configuring Ethernet, FDDI, and Token Ring Services

2-8 117020-A Rev. A

Setting the 100Base-T Line Speed

To match the physical wiring in your 100Base-T LAN, you can set the line speed

and duplex setting to

• 100Base-T half-duplex (the default) -- Half-duplex operation indicates that

data ﬂows both into and out of the interface, but not simultaneously. Use this

setting for most Ethernet LANs.

• 100Base-T full-duplex (100Base-FD) -- Full-duplex operation allows

simultaneous transmission and reception on the interface. Use this setting for

ﬁber optic LANs that cover a great distance.

• Full-duplex with congestion control (100Base-FD w/ Cong Control) -- This

setting enables the Bay Networks proprietary Congestion Control algorithm

(a form of ﬂow control) in full duplex operation. Use this setting to

interoperate with the Bay Networks Model 28115 Ethernet Switching Hub.

• Automatic line speed negotiation (Auto Negotiation) -- The router

automatically negotiates with end nodes to determine the correct line speed

conﬁguration to use on the interface.

If you set the Interface Line Speed parameter to Auto Negotiation, continue with

the next two sections:

• Conﬁ

guring Automatic Line Speed Negotiation

• Viewing Line Negotiation Status

Note: Full-duplex operation does not increase performance. It does increase

the maximum length of the physical network by lifting restrictions imposed by

collision detection in half-duplex circuits.

Site Manager: Interface Line Speed parameter: page A-5

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Avaya Configuring Ethernet, FDDI, and Token Ring Services Manual de usuario Pagina 32