Spectrum is no discovering device's connections.
The following error was found in the $SPECROOT/SS/ADiscDebug_yyyymmdd_hhmmss file:
Jun 07 12:11:45 LLDP device_name/0x151219: failed to read LLDP lldpRemTable. Error = 1
In case of certain model types (model type handles 0x3b80008 , 0x3b80007, 0x5240000 and 0x2c60022), we read lldpRemTable as scalar instances. In the case of scalar instances, zero will be appended at the end to the OID and get-request flows to the device. In the case of other model types, lldpRemTable is read treating it as a table and get-next-request flow to the device.
If disable_time_filter=true parameter is used in $SPECROOT/SS/.vnmrc file, then lldpRemTable is read as scalar instances for all model types .
Customer is using the flag disable_time_filter=true the in .vnmrc file. Because of this Spectrum is reading lldpRemTable as scalar instances using get-request. In this case, the device is responding with "no such instances" causing table read failure.
Release : 20.2
Component : Spectrum Discovery & Modeling
Removing this flag or making it false in the .vnmrc file will solve the issue. Also need to stop/start the SpectroSERVER application to put the change in place.