Specifies the method used to periodically check the accessibility of the RLOCs for map cache entries.
- SNMP ID:
 - 2.93.4.1.6
 - Console path:
 - Setup > Routing-Protocols > LISP > Instances
 - Possible values:
 - Off
 - The availability of the RLOCs is not checked periodically.
 - RLOC-Probing
 - The availability of the RLOCs is periodically checked by LISP RLOC messages.