Quick Start Manual

Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Symptom
Cause Solution
Amber Col LED
blinks.
There is data
collision on the
network.
Data collision is normal on Ethernet networks. No
action is required.
Amber Col LED
blinks
excessively.
There is data
collision on
the network
because the
network is
extremely busy
or defective
devices are
connected on the
network that
cannot detect
network traffic or
collision.
Make sure connected devices are operating in
half-duplex mode. The hub is not compatible with
devices that operate in full-duplex mode.
If you suspect that there might be a defective
device on the network, disconnect devices one at
a time to isolate the defective unit on the network.
If the network is extremely busy, you may have to
segment the network with an Ethernet switch such
as a NETGEAR Ethernet switch or to upgrade
your network to Fast Ethernet operation.
Wrong or
miswired cables
are used.
Make sure the correct UTP cables are used. See
the table in the installation section of this guide for
cable use and Normal/Uplink push button
information. Note that home telephone cables can
cause a collision condition and cannot be used in
place of UTP cables.
Green Link LED
is off when a
cable is attached.
The port is not
detecting a
successful link.
Check for a bad cable, cable pairs that are not
correctly wired, or loose connectors. Make sure
that there is power to both the hub and the
Ethernet transceiver on the connected device.
Green Link LED
is not blinking
when there is
data
transmission.
The port is not
detecting data
transmission.
Check for a bad cable, cable pairs that are not
correctly wired, or loose connectors. Make sure
that there is power to both the hub and the
Ethernet transceiver on the connected device.
Green Active
LED on the BNC
port is not on
when the port is
connected.
The port is not
detecting a
successful link.
Make sure that each segment is terminated with a
BNC 50 terminator at both ends. Check for a bad
cable.
Green Rx LED
on the BNC port
is not blinking
when there is
data
transmission.
The port is not
detecting data
transmission.
Check for a bad cable or loose connectors. Make
sure that there is power to both the hub and the
connected device.
Green Active
LED on the AUI
port is not on
when the port is
connected.
The port is not
detecting a
successful link.
Make sure that the AUI transceiver is functioning
properly, the coaxial segment is terminated
correctly, the segment is not disconnected along
the cable length, and the signal quality error
(SQE) test on the transceiver is disabled. Refer to
your transceiver documentation for instructions on
setting the SQE.
Green Rx LED
on the AUI port is
not blinking when
there is data
transmission.
The port is not
detecting data
transmission.
Check for a bad cable or loose connectors. Make
sure that there is power to both the hub and the
connected device.
Troubleshooting