Cisco Systems 8600 Series manual Troubleshooting the BPX Switch

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 11-1to find the cause and obtain the information on replacing the failed component.

Caution When using Table 11-1for 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 Fuse.
card not lighted.

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	AC Systems:	Switch on circuit breakers. If problem persists, pull all cards
lighted.	Circuit Breakers on AC Power	and power supplies out to see if a shorted card or supply
		exists.
	Supply Tray.
	DC Systems:
	Circuit breakers on Power Entry
	Module(s) switched off.
	BPX switch power cord plug	Check that no one is working on the system, shut off source
	dislodged from AC receptacle.	breaker, then reconnect power cord.
Power supply ac LED lit but dc	Power supply defective.	Check DC ok LEDs on ASM. If out, remove and replace
LED not lit.		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	Check NMS event log to identify problem reported.
	non-service affecting (minor)
	system fault.
	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	Use NMS dspnw screen to locate node in alarm. Refer to
	another BPX switch or an IPX	Cisco WAN Switching Command Reference for additional
	switch.	information.
	Internal temperature is higher	Check front and back of node cabinet for freedom of air flow.
	than normal resulting from	Replace any fan that may have failed or slowed. Use NMS
	blocked air flow or defective fan.	dsppwr screen to check node temperature.
ASM hist LED lit.	If no other alarm indications, a	Press ASM history clear button. Check NMS event log to
	fault occurred in the past but has	determine cause.
	been cleared.

11-2Cisco BPX 8600 Series Reference