Quick Installation Guide
Rack type PoE+ switches
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| EN
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5)
Troubleshooting
•
Power LED is turned off: check if the power cord
is correctly plugged in and the plug is in the PoE
switch. On top
of that, make sure that input current parameters are in accordance with the specification. Try removing and
inserting the plug again or use a
different power cord
that meets the
rack
PoE
switch specification.
•
LAN port’s LED is turned off: check if the cable is not damaged and that the network configuration is set
correctly. Then check whether all devices connected to the PoE switch are operational and properly configured.
•
The dedicated LAN port’s PoE LED is not lit orange: check that the end device supports active PoE mode
- at
least one of the standards: IEEE 802.3af or IEEE 802.3at. Make sure to use a certified category 5e Ethernet
con
nection cable, built with 8 wires and made of pure copper (100% CU).
•
Connected devices do not operate at distances up to 250 m: check if the
toggle switch is set to
„
PoE Extend 250
m
”
. Then make sure that used connection cable (Ethernet) is certified to a minimum of 5e, is made of 8 wires
and the conductor is made of pure
copper (100% CU).
•
Devices connected to the PoE ports operate at speeds of up to
10 Mb/s:
check that the toggle switch is set to
„
PoE Extend 250 m
”
. If so, switch it to
„
Normal
”
.
•
Devices connected to the PoE ports
cannot communicate with each other except Uplink
ports: check if the
toggle switch is set to a
„
VLAN
”
position. If yes, toggle it to the
„
Normal
”
position.
•
Connected products can communicate with each other even though the
„
VLAN
”
function is active: check if
there are devices connected to the Uplink
ports, which redirect all traffic to all other ports. In this case, you
must use managed switches with the appropriate features to restrict transmission.
•
The PoE ports with the highest numbering are switched off
or
switched off and on (run loop effect)
:
1) When end devices that exceed the PoE budget are connected to the lowest numbering ports
:
this is normal
switch behavior. If, for example, port 1 exceeds the PoE budget, the highest port will be turned off. When it is
turned off, the total PoE load (reduced by the value from the last port) will be less than the available budget.
That will cause the switch to turn on the previous port, which will cause the PoE budget to be exceeded again.
The situation will stabilize when a load of port 1 will not exceed the PoE budget.
2) When end
-
devices that exceed the PoE budget are connected to the highest numbering
ports
: connect
essential devices intended to operate 24/7 to the lowest ports to maintain continuity of operation, as
described in point 1. Otherwise, the same device that causes the PoE budget to be exceeded and intended to
operate continuously will be continuously turned off and on (run loop effect).
•
Other: Verify if all the connected devices are in Full
-
Duplex mode and if the cable is min. UTP Cat.5e, ≤ 100m.
If you cannot fix the issues stated above by yourself or others that have not been mentioned occur, please contact your
dealer for clarification and possible service.
