Accton Technology SWITCHUB-2S 100BASE-TX - Manual (Page 22)

SwitcHub-2s User’s Guide
2-8 Hardware Description
Port Diagnostic Test
The Port Diagnostic Test checks all ports. If a problem is detected, an LED in
the corresponding row (which indicates the malfunctioning port) and column
(which indicates the failed component) will light up as shown below.
LED Indicator
(Column)
Color Diagnostic Test Status
4 (20%) Green Failed Port IC Test
5 (35%) Green Failed Routing Table Test
6 (50%) Orange Failed Input Queue RAM Test
7 (70%) Orange Failed Output Queue RAM Test
Note: Enabling the Diagnostic function activates tests similar to the one performed upon
power on. After successfully completing diagnostics, the system returns to normal
operation.
Port Status Display
Port 1 –
Port 2 –
Status –
Link Status (Link) - Indicates a valid network connection associated with the port.
LED Activity Condition Indication
STEADY LIGHT ON Indicates a valid link has been established on this port.
NO LIGHT OFF No valid link has been established on this port.
Troubleshooting : If the Link LED does not light up when a device is connected to its corre-
sponding port, check that both the hub and connected device are powered on. For devices
connected to the hub using twisted-pair cable, check that the cable length does not exceed
100 meters. You should have standard, straight-through cables and not crossover or other
specialized cables.