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Copyright © 2009
Microsemi
17
Rev 1.1 27-Jul-09
Analog Mixed Signal Group
2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308
Table 4-1: Troubleshooting Steps
Symptom
Corrective Steps
A port indicator is not
lit and the
corresponding PD
does not operate.
1.
Verify that the port is enabled (the Midspan did not detect a PD).
2.
Verify that the PD is designed for Power over Ethernet
operation.
3.
Verify that you are using a standard Category 5/5e/6, straight-
wired cable, with four pairs.
4.
If an external power splitter is in use, replace it with a viable
splitter.
5.
Verify that the PD is connected to the Data & Power output port.
6.
Try to reconnect the same PD to a different port on the same or
into another Midspan. If it works, there is probably a faulty
output port or RJ-45 connection.
7.
Verify that port shutdown command was not issued via the
Web manaegment.
The end device
operates, but there is
no data link.
1.
Verify that the port indicator on the front panel is continuously
lit.
2.
If an external power splitter is in use, replace it with a viable
splitter.
3.
Verify that for this link, you are using a standard UTP/FTP
Category 5 straight (non-crossover) cabling, with all four
pairs and that the link is 100 m or less.
4.
Try to re-connect the same PD to a different port on the same
midspan or to a different unit: if it works, there is probably a
faulty port or faulty RJ-45 connection.
Is it safe to keep the
Midspan running
while a port indicator
is orange?
This is a safe condition. The orange indication is due to:
1.
A device not compliant to IEEE 802.3af, is detected.
2.
Terminals 4/5 and 7/8 are shorted together.
3.
Forced external power fed into the port.
During these conditions, port power is disconnected.
