The value of tmnxMcRingNodeRncvAdminState specifies the
administrative state of the Ring-Node Connectivity Verification
of this ring node.
When the value of tmnxMcRingInfoOperState in the corresponding
tmnxMcRingInfoEntry is equal to 'broken',
the Ring-Node Connectivity Verification operates automatically,
regardless of the value of tmnxMcRingNodeRncvAdminState. This auto-
matic operation uses the parameter values configured in this entry,
except tmnxMcRingNodeRncvInterval.