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AX500 Series Installation Manual
16.
Troubleshooting Q&A
Q1:
I found my AX500 unit is in 10M/100M connection with a switch. What should I do to fix the problem?
Ans:
It could be due to a couple of reasons. Please follow the procedures below to trace the root cause.
1.
Make sure the Ethernet ports of both AP and the switch are configured as Auto Negotiation Mode. For
AX500, you can go to the
WebUI: Configuration > Network > General > Ethernet Setting
to set it. Please
note manual mode only runs on 10/100Mbps of connection. If necessary, try to set the AX500 unit to
factory default state to rule out any possibilities caused by special configuration.
2.
Double check the Ethernet cable length: The total length between the AP and the switch/router (via
PoE injector if applicable) should not exceed 100 meters.
3.
Bypass any devices in between, e.g. surge protectors, and have a direct Ethernet connection between
the AP and the switch/router (via PoE injector if applicable) to check if the speed is still in 10M/100M. If
so, go to the next item.
4.
Visual inspection on the Ethernet ports of both AP and the switch and make sure no pins crooked or
burnt are found. Some past experience even tells us that there may be some cases in which the pins
were stuck and not able to be sprung back to its original position when unplugging the Ethernet cables.
Poor pin contact may cause fallback in Ethernet speed. Therefore, please have a careful check on the
Ethernet pin contact.
5.
Check cable/cable connector quality: The workmanship of cable clamping can play an important role
on the final negotiated speed. Poor workmanship results in high impedance and hence causes fallback
in Ethernet speed. You can try to re-clamp the Ethernet connector and swap cables to crosscheck. In
addition, make sure correct pin assignment is made according to Section 8.
6.
If the above is all done and does not work, please contact our local partners or Altai technical support
team.
Q2:
I found my AX500 unit reboots itself. Checking the
WebUI: Status > Logs > syslog
, I spot some cold reboot
messages triggered occasionally there. Any particular reason why it happened?
Ans:
Cold reboot means the AP has been powered off and on again, i.e. power cycle. This issue is mainly
hardware-related, e.g. product hardware defect, intentional power on/off and power chain problem
delivering not sufficient power enough for the AP unit. To confirm whether it is the power chain problem, first
check the power supply source and make sure it is stable enough all the time. Then follow the same
procedures as described in Q1 to perform checking on configuration, cable length, additional resistance
(surge protector), Ethernet pin contact, Ethernet wiring. All of these can be factors of insufficient power
supply and hence leading to AP reboot.
