Led Indicators - D-Link DFE-690TXD User Manual

its supporting switch or hub include speed (100Mbps = Fast Ethernet, or
10Mbps = traditional Ethernet) and duplex mode (half-duplex or full-duplex).
Startup communication between the two devices occurs when both devices are
operating, the cable connection between them is good, and the connected
notebook PC's network software is l o aded. As soon as those conditions are
satisfied, the preparatory process of auto-negotiation between the DFE-
690TXD and its supporting device begins and proceeds automatically.
If the supporting switch or hub has auto- negotiation functionality, then it and
the DFE-690TXD 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 supporting device does not have auto-negotiation functionality, then its
monotone (single capability) message will be recognized by the DFE-
690TXD's auto- negotiation facility, and the DFE-690TXD will simply switch
to the one of its own capabilities which matches that of the supporting device.
Once the auto-negotiation is completed, the line is ready, and it will provide an
optimal data channel between the DFE-690TXD and the supporting device.
The line will remain ready without further auto- negotiation action until the link
is broken. Auto-negotiation then reoccurs at any time that the link is restored,
again making the line ready for optimal data communications.

LED Indicators

The DFE-690TXD features 2 LED indicators:
§
100 Indicator: indicates that data transmittal rate is at a fast 100
Mbps.
§
10 Indicator: indicates that data transmittal rate is at 10 Mbps.
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