11-2 Cisco BPX 8600 Series Reference
Troubleshooting the BPX Switch
The FAIL indicators on the cards indicate that the system has found these cards defective in some
mode, and now considers them as failed cards. Use Table 11-1 to find the cause and obtain the
information on replacing the failed component.
Caution When using Table 11-1 for troubleshooting, call Customer Service before performing any
disruptive testing or attempting to repair the BPX switch. This ensures that you have isolated the correct
problem area. It also enables Customer Service to provide assistance in performing the necessary procedures.
Warning CContact Customer Service before attempting to replace fuses on backplane and refer to
instructions in Replacing Card Slot and Fan Fuses on the System Backplane.
Table 11-1 Troubleshooting the BPX Switch
Symptom Probable Cause Remedy
Front panel LED on individual
card not lighted.
Card Fuse. Check card fuse. Replace if defective.
Try another card of the same type. If still no LED lighted,
backplane card slot fuse may be defective. Refer to Replacing
Card Slot and Fan Fuses on the System Backplane.
No front panel LEDs are
lighted.
AC Systems:
Circuit Breakers on AC Power
Supply Tray.
DC Systems:
Circuit breakers on Power Entry
Module(s) switched off.
Switch on circuit breakers. If problem persists, pull all cards
and power supplies out to see if a shorted card or supply
exists.
BPX switch power cord plug
dislodged from AC receptacle.
Check that no one is working on the system, shut off source
breaker, then reconnect power cord.
Power supply ac LED lit but dc
LED not lit.
Power supply defective. Check DC ok LEDs on ASM. If out, remove and replace
power supply. If on, PS LED probably defective.
Card front panel fail LED lit. Card failed self-test. Check status of card at NMS terminal using dspcds screen. If
alarm confirmed, try card reset (resetcd command). Finally,
remove and replace the card.
Card stby LED on. Card is off-line. Not a problem as long as primary card is active.
ASM major or minor LED on. Service-affecting (major) or
non-service affecting (minor)
system fault.
Check NMS event log to identify problem reported.
Failed card in local node. See remedy for card fail LED indication.
Network trunk failed. Observe Port LEDs on each BNI or BXM (ports configured
in trunk mode).
Use NMS dsptrk to locate failure.
Failure in remote node. May be
another BPX switch or an IPX
switch.
Use NMS dspnw screen to locate node in alarm. Refer to
Cisco WAN Switching Command Reference for additional
information.
Internal temperature is higher
than normal resulting from
blocked air flow or defective fan.
Check front and back of node cabinet for freedom of air flow.
Replace any fan that may have failed or slowed. Use NMS
dsppwr screen to check node temperature.
ASM hist LED lit. If no other alarm indications, a
fault occurred in the past but has
been cleared.
Press ASM history clear button. Check NMS event log to
determine cause.
