The value of vRtrMplsLspSwitchStbyPath specifies whether to
trigger the switch from the current active standby LSP path to a new
LSP path as specified by vRtrMplsLspSwitchStbyPathIndex.
When SET to the value of 'doAction', if the LSP path is actively on
a current standby path, signaling will be initiated to switch to
the new path.
If a signal is triggered while a re-signaling is already in
progress, the old transient state will be destroyed and a new
transaction will be triggered.
This variable must be set along with vRtrMplsLspSwitchStbyPathIndex
to indicate the specific path index to switch to.
An SNMP GET request on this object should return 'notApplicable'.