Specifications

EtherHub-16 Quick Start Guide
5
Front Panel Indicators
This hub provides LED indicators for monitoring various network conditions. A glance at the
front panel allows you to instantly monitor the status of each station port plus the overall
condition of the hub.
LED Status Indication
Power Steady Power is being supplied to the hub.
Steady Port is connected to an active node and receiving a valid Link Integrity pulse.Link/Traffic
Flashing Traffic is passing through this port.
Steady Two or more devices are transmitting at the same time. This is normal for an Ethernet
network. However, if there are excessive collisions, the network may be overloaded.
Col/Traffic
Flashing Traffic is passing through this port.
Troubleshooting
Symptom: Link/Traffic indicator remains unlit.
Causes: Workstation’s network adapter, cable or hub port is defective.
Solution: The most common cause is a defective network adapter or cable connection. Check
the corresponding cable connections, or the workstation’s network adapter for
possible defects. Verify that the correct cable type (straight or crossover) is being
used. (Note that crossover cable is only required if you cascade hubs via standard
MDI-X ports; i.e., Port 16MDI is not used.) Replace the defective cable or adapter.
Symptom: Power indicator does not light up after power on.
Causes: Defective power supply or attached cable, or a problem at the power source.
Solution: Check the power source and attached cable. If the problem cannot be resolved, you
may have to replace your unit’s power supply. Ask for dealer assistance.