[j-nsp] Juniper M20 does not clear "show chassis alarms"/"show system alarms" although problem not present any more

[martin]

Unfortunately this does not clear "show chassis alarms" or "show system alarms".


2011/1/22 Chris Cappuccio <chris at nmedia.net>:
> remove power supply, reinsert?
>
> martin [m4rtin86 at gmail.com] wrote:
>> Hi,
>> sorry about cumbersome subject, at least it's informative :) However,
>> has anyone seen an issue with Juniper M20 where alarms("show chassis
>> alarms", "show system alarms") do not clear althought problem itself
>> is not present any more? I have a Juniper M20 router(JUNOS 9.4R4.5),
>> which has two AC PSU's(740-007311) installed. There were few short
>> power outages with one power feed(first one ~6min, second one ~6min
>> and third one ~30min) and finally :
>>
>> Jan 19 07:21:11  M20 chassisd[1130]: CHASSISD_SNMP_TRAP6: SNMP trap
>> generated: Power Supply OK (jnxContentsContainerIndex 2,
>> jnxContentsL1Index 2, jnxContentsL2Index 0, jnxContentsL3Index 0,
>> jnxContentsDescr Power Supply B, jnxOperatingState/Temp 2)
>>
>>
>> "Power Supply A" is connected to other power-feed and was not affected
>> at all. As you can see, according to log, "Power Supply B" is fine.
>> "DC OK" light of "Power Supply B" is on and "show chassis environment
>> " output indicates as well, that "Power Supply B" is fine:
>>
>> Class Item                           Status     Measurement
>> Power Power Supply A                 OK
>>       Power Supply B                 OK
>>
>>
>> According to Juniper
>> documentation(http://www.juniper.net/techpubs/software/junos/junos73/swcmdref73-basics-services/html/chassis-monitor18.html),
>> "You cannot clear the alarms for chassis components. Instead, you must
>> remedy the cause of the alarm. When a chassis alarm is lit, it
>> indicates that you are running the router in a manner that we do not
>> recommend."
>>
>> However, I still see following output if I execute "show chassis
>> alarms" or "show system alarms":
>>
>> user at M20> show chassis alarms
>> 2 alarms currently active
>> Alarm time               Class  Description
>> 2011-01-19 06:12:44 UTC  Major  Power Supply B not providing power
>> 2011-01-19 06:13:41 UTC  Major  Power Supply B fan failed
>>
>> user at M20>
>>
>>
>> I know, that rebooting the router would help, but what might cause
>> such issue? Has anybody encountered something similar?
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>
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>