Description: The status of backup port monitoring for this port pair. Setting this object to active(2) enables the primary port, disables the secondary port, and activates backup port monitoring.

Once backup port monitoring is activated, the value of this object is reported as standby(3) until a triggering event occurs. A triggering event may be loss of link after link was active, port auto-partition, or port auto-isolate (100Mbps ports only). After a triggering event occurs, the primary port is disabled, the secondary port is enabled, and the value of this object is reported as backup(4). A RFC2108 rptrHealthInfo trap is transmitted. To re-enable the primary port and re-activate backup port monitoring, set this object to active(2).

To disable backup port monitoring for the port pair, set this object to inactive(1). To remove the port pair from the backup table, set this object to delete(6). The enable/disable statuses of the ports do not change when they are deactivated or deleted; use rptrPortAdminStatus (RFC2108) to set the ports to the desired state.

A value of invalid(5) indicates that one or both of the units for which this entry was originally configured is not currently in the stack. Backup port monitoring is disabled. The agent makes this determination by tracking the serial numbers on the units in the stack.

The values standby(3), backup(4), and invalid(5) are read-only. Attempts to set this object to either of these values are rejected with an error-status of badValue(3).