Cabletron Systems AirConnect 3Com - Manual (Page 34)

34 C HAPTER 2: I NSTALLING A CCESS P OINT HARDWARE
Troubleshooting Check the following symptoms and their possible causes before contacting the
3Com Support Center.
Verify AP Operation
1 If the AP does not power up, you may be experiencing one of the following:
■
Faulty AP power supply
■
Failed AC supply
■
Electrical Management System (EMS) operating outlet
2 After the AP resets and hardware is initialized, it performs an SRAM test. If the test
passes, all three LEDs turn on. If the test fails, the LEDs all turn off and the AP
resets. The LEDs turn off sequentially, in the order shown, as each of the following
tests pass.
Identify wired network problems:
3 No operation:
■
Verify AP configuration via Telnet, PPP or UI. Review procedures for Ethernet
and serial connection of the AP. Review AP firmware revisions and update
procedures.
■
Verify network configuration by ensuring that there are no duplicate IP
addresses. Power down the device in question and ping the assigned
address of the device. Ensure no other device responds to that address.
4 AP powered on but has no connection to the wired network:
■
Check connections for proper wiring.
LED State Test Passed
Power Blinks
continuously Bootup and run-time codes
downloaded to AP flash memory
successful. Run-time code controls the
AP.
Wireless LAN Activity Off Serial port initialized, FIFO buffer
flushed, serial port to AP connection
checked.
Wired LAN Activity Off LAN adapter present.