Fast EtherHub 3500 System User’s Guide
Hardware Reference 5-11
Link
-
The Link LED should light up when a device (e.g., computer,
hub or router) establishes a valid connection via the RJ-45 port.
Troubleshooting -
If the Link LED does not light up when a device is
connected to a 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 use standard, straight-through cables and not crossover or
other specialized cables.
Traffic -
Refers to the movement of packets received by the port.
A port’s Traffic LED will blink in proportion to the rate of
traffic passing through the port. It will remain ON during high
traffic rates. The network manager can easily determine the
activity on a port by viewing this LED.
Diagnostic Test Indicators
The RJ-45 Partition/Disable LEDs not only monitor the partition
or disabling of an RJ-45 port, they also monitor diagnostic test
results.
State Indication
ON Corresponding hardware component failed the diagnostic test.
OFF Corresponding hardware component successfully passed the diagnostic test.
Table 5.15 Diagnostic Indicators