Accton Technology SUPERSMART ETHERHUB-16SE User Manual
Page 17
SuperSmart User’s Guide
2-6
Hardware Description
TROUBLESHOOTING
If the Link/Traffic LED does not light up when a device is connected to
its corresponding port, check that both the hub and connected device
are powered on. For devices connected to the hub using a twisted-pair
cable, check that the cable length does not exceed 100 meters. You
should have standard, straight cables and not cross-over or other
specialized cables.
Traffic
Traffic refers to the movement of packets being received by the
port. A port’s corresponding Link/Traffic LED will blink (ON)
in proportion to the rate of traffic passing through the port.
Through this LED, the network manager can easily view the
activity on a port.
Diagnostic Test LED Indicators
The RJ-45 Partition LEDs not only monitor the partition or
disabling of an RJ-45 port, they also monitor diagnostic test results.
LED Activity
Condition
Indication
BLINKING RED LIGHT
ON
The corresponding hardware component failed the
diagnostic test.
NO LIGHT
OFF
The corresponding hardware component
successfully passed the diagnostic test.
After power on, the hub automatically performs a diagnostic test.
Seven hardware components are tested for SuperSmart hub. During
this test, Partition LEDs indicate the success/failure of each test. The
following table shows what each Partition LED monitors.
Partition LED Indicator
Test function/component
1
CPU
2
ROM
3
RAM
4
Serial communication controller
5
Hub control 1
6
Hub control 2
7
Timer