DFE-530TX 10/100Mbps Ethernet Adapter for PCI Bus
Installation
3
line quality and settled on the combination of shared options and
parameters which will provide the best data communication over the
connecting phone line, then you are given the
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onnect” message
which signals the end of the intermodem negotiation and the
beginning of your intended communication with the remote
computer.
Auto-negotiation between devices within an Ethernet LAN is
similar in concept, but much briefer. The two devices involved in
the auto-negotiation will be the DFE-530TX Adapter serving your
station (installed in your computer), and the hub through which it is
connected into the LAN. The options to be negotiated between the
DFE-530TX and its supporting hub include Ethernet type
(100BASE-TX Fast Ethernet or 10BASE-T Ethernet) and duplex
mode (half-duplex, being one-way-at-a-time, or full duplex, being
simultaneous transmit-and-receive).
Startup communication between the two devices occurs when both
devices are power-on, the cable connection between them is good,
and the Network Operating System software is running. As soon as
those conditions are satisfied, the preparatory process of auto-
negotiation between the DFE-530TX and its supporting hub
proceeds automatically. If the hub has auto-negotiation function-
ality, then it and the DFE-530TX exchange a series of messages in
which each device signals its capabilities and listens for
corresponding information about the other. The auto-negotiation
process requires only a few milliseconds, and the two devices select
the best communication parameters supported by both devices.
If the hub does not have auto-negotiation functionality, then its
monotone (single capability) message will be recognized by the
DFE-530TX
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auto-negotiation facility, and the DFE-530TX will
simply switch to the one of its own capabilities which matches that
of the hub.
