Quick Start Manual

Installation Guide for the Model EN516 Ethernet Hub
2-2 Physical Description
LED Indicators
There are six LEDs on the front panel of the hub and two on each port connector that allow you to
identify:
• Status of the hub AC power supply
• Operational status of the hub
• Collision occurrence on an Ethernet segment indicating activity level
• Partitioning of a port as a result of excessive collision occurrence
• Data utilization of the Ethernet segment in a standalone hub or a stack of hubs
• Link and receive activity status for all ports in the hub
Table 2-1 describes each LED on the front panel of the hub.
Table 2-1. LED descriptions
Label Color Activity Description
Power Green On Power is supplied to the hub.
BNC Rx Green Blinking There is incoming data on the BNC port.
AUI Rx Green Blinking There is incoming data on the AUI port.
Collision Yellow Blinking There is data collision on the network.
Note that occasional collisions are normal.
BNC Partition Yellow On The BNC port is being partitioned because
of excessive collisions, or when the BNC
port is not connected.
AUI Partition Yellow On The AUI port is being partitioned because of
excessive collisions.
Link/Rx (located on
top left corner of each
RJ-45 port)
Green On
Blinking
The link between this port and the other
connecting port is good.
There is incoming data on the port.
Partition (located on
top right corner of each
RJ-45 port)
Yellow On The port is being partitioned because of
excessive collisions.