NETGEAR EN104, EN116, EN108 manual Troubleshooting Information, Symptom Cause Solution

Troubleshooting Information

Refer to this table and the information that follows the table to troubleshoot your hub.

Symptom	Cause	Solution
Amber Col LED	There is data collision on	Data collision is normal on Ethernet networks.
blinks.	the network.	No action is required.
Amber Col LED blinks	There is data collision on	Make sure connected devices are operating in
excessively.	the network because the	half-duplex mode. The hub is not compatible
	network is extremely	with devices that operate in full-duplex mode.
	busy	If you suspect that there might be a defective
	or defective devices are	device on the network, disconnect devices one
	connected on the	at a time to isolate the defective unit on the
	network that cannot	network.
	detect network traffic or	If the network is extremely busy, you may have
	collision.	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	Make sure the correct UTP cables are used.
	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	The port is not detecting	Check for a bad cable, cable pairs that are not
off when a cable is	a successful link.	correctly wired, or loose connectors. Make sure
attached.		that there is power to both the hub and the
		Ethernet transceiver on the connected device.
Green Link LED is not	The port is not detecting	Check for a bad cable, cable pairs that are not
blinking when there is	data transmission.	correctly wired, or loose connectors. Make sure
data transmission.		that there is power to both the hub and the
		Ethernet transceiver on the connected device.
Green Active LED on	The port is not detecting	Make sure that each segment is terminated
the BNC port is not	a successful link.	with a BNC 50 terminator at both ends. Check
on when the port is		for a bad cable.
connected.
Green Rx LED on	The port is not detecting	Check for a bad cable or loose connectors.
the BNC port is not	data transmission.	Make sure that there is power to both the hub
blinking when there is		and the connected device.
data transmission.
Green Active LED on	The port is not detecting	Make sure that the AUI transceiver is
the AUI port is not	a successful link.	functioning properly, the coaxial segment is
on when the port is		terminated correctly, the segment is not
connected.		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	The port is not detecting	Check for a bad cable or loose connectors.
AUI port is not	data transmission.	Make sure that there is power to both the hub
blinking when there is		and the connected device.
data transmission.

Model EN104/EN108/EN116 Ethernet Hub Installation Guide