D-Link DE81 2TP+ - Manual (Page 12)

receptacle on the rear panel of the Ethernet Hub.
Plug the other end of the power cord into an
electric service outlet. Turn on power to the
Ethernet Hub by switching its rear-panel power
switch to the on position.
LED Indicators
LED indicators are located on the front panel of
the Ethernet Hub.
Jabber LED
One Jabber LED for all ports. This LED
flashes red when the Ethernet Hub detects a
data packet that is defective (exceeds allow-
able length). This kind of error will ordinarily
be managed by the offending Ethernet adapter
itself, in which case the Jabber LED will re-
turn to its normal off (dark) state.
Collision LED
One Collision LED for all ports. A collision
occurs when two stations within a collision
domain attempt to transmit at the same time.
Intermittent flashing yellow of the Collision
LED is normal; the contending adapters
resolve each collision by means of a wait-
then-retransmit algorithm. Fre-quency of
collisions is an indicator of heavy traffic on
the network.
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