Core switches were down and all the devices including core switches were suppressed. critical alerts was not generated on any devices.
We have Unresolved Fault Alarm Disposition set to Device in Fault Domain from the VNM model, Fault Isolation Setttings.
DX NetOps 20.2 and later releases of Spectrum
Component : Spectrum Core / SpectroSERVER, Fault Isolation
To enable debug first, get the FaultIsolation Model_Handle from CLI, as follows:
./show models | grep FaultIsolation
./update action=0x10084 mh=<fault isolation model handle> index=0,attr=0,type=3,val=2
[spectrum@my_spectro:/opt/spectrum/vnmsh]$ ./update action=0x10084 mh=0x100000b index=0,attr=0,type=3,val=2
update action: successful
Response has 0 attributes:
This should dump all of the fault domain data into the VNM.OUT where we can check further.
To disable the debug afterwards, run:
./update action=0x10084 mh=<fault isolation model handle> index=0,attr=0,type=3,val=0
Then provide the VNM.OUT with the debug, all of the events exported in CSV as far back as possible and a clear screenshot of the suppressed topology in a Support issue.