Module Down Alarms

[Patrick Murtey]

Hi All,

 

Is there a document somewhere that goes into detail about the chassis down and module down alarms that came with version 10?  We currently had a situation where a juniper switch ex4200 with FPC cards in them, had notification issues. When the switch went down there was a module down alarm for all 4 FPC's, and a chassis alarm. When the switch came back up (power outage) all the alarms cleared. However, the four FPC's were still down and there was no alarm that stayed to alert the staff the FPC modules were still down. When the Engineering staff went into the device and displayed the interfaces all of them showed "loading junos".  Is this a bug in the detection? Because the cards were reflecting "loading junos" did the FPC's poll with SNMP? Its my understanding its a SNMP poll that makes this determination. Any help with this would be appreciated. We are left scratching our heads.

 

TIA

[Widjaja Sangtoki]

Are those four module down alarms symptom alarms to the root cause 'Chassis Down' alarm? When you see symptom alarms displayed on your OneClick Console, you may have set your OneClick Console -> Preferences ->  Alarms Tab -> [Set Alarm Filter...] -> State tab -> Symptoms box -> Show Symptoms. By default, OneClick Console doesn't show symptom alarms in the Alarm table.

To confirm if those are symptom alarms, go to Alarm Detail of the 'Chassis Down' alarm and select Impact tab and see at Symptoms view. If 'Chassis Down' alarm has those 4 'module down' alarms as symptom alarms then Spectrum is working as designed. Please refer to below documentation.

Support for Chassis Devices - Chassis Alarms 

 

With regards to FPC modules were still down but Spectrum doesn't show 'module down alarms', this will be an issue. We need to look at the device MIB data in more details and investigate further. I recommend this to be analyzed further within a Support Call ticket.