Assign a loopback address (name of an ARF network, named loopback address or IP address) to be used for the alive test.
- SNMP ID:
 - 2.7.21.8
 - Console path:
 - Setup > TCP-IP > Alive-Test
 - Possible values:
 max. 16 character from [A-Z][0-9]@{|}~!$%&'()+-,/:;<=>?[\]^_.
- Default:
 - empty