We place -2 in values in the database that we are unable to populate from the device. So if a device does not respond to any of the OIDs for any of the values we poll, we place a -2 in that column for that piece of data, indicating that we were unable to get a value.
Please let me know if you have any additional related questions.
Thanks a lot. I'll create a new alarm with this parameter,
showing me when snmp stops responding in a server.