Description 1
If the adjacency is up, the amount of time in seconds since this adjacency entered state 'up'. If the adjacency is not up, the number of seconds since the adjacency was up, or since the system started, if the adjacency has never been up. Note: This can be implemented as start time less the current time.
Sources for this description
Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community)Belden, GarrettCom and Hirschmann IT official standalone MIBsNokia networking MIB copies (LibreNMS/Observium Community)