Description: The File Scanning allows to monitor files for regular expressions in one of four modes: Full mode - when ever the file is modified the entire file is scanned. Incremental - The entire file is scanned only once. Lines added to the end of the file are then scanned as they are appended. Tail - The existing file contents are not scanned at all. Lines added to the end of file are scanned as they are appended. Persist Tail - Same as Tail mode except when the agent is restarted, it scans the file starting from the last line examined in the previous scanning. SNMPv2 uses the term 'context' for the MIBs that can have multiple instances running on the Agent. If you are using a SNMPv2 based thirdparty management station to communicate with such an agent, then make sure that you are using the right context information. However, if you are using SNMPv1 based management station, then add the context information to the SNMP community as follows ':' This will enable you to access data from multiple instances of the same module running on an agent.