This is a standard SNMP RowStatus value used to create, activate, or delete a row in this virtual interface's packet-filter table. Because filter entries are built and torn down via SNMP SET sequences, this status field is what actually commits (or removes) the row rather than any of the sibling action/direction/counter fields. For example, an admin provisioning a new rule on VI 4 facing the Frame Relay uplink would set this to createAndGo, while retiring an old rule there later would mean setting it to destroy.