The value vRtrMplsTpTunnelCommandSwitch specifies the switch command to
initiate on a MPLS-TP LSP Tunnel.
When read, this object returns the last command written or 'noCmd (0)'
if no command has been written to this MPLS-TP LSP Tunnel since
initialization. The return of the last command written does not imply
that this command is currently in effect. This request may be preempted
by a higher priority local or remote request.
The value 'noCmd (0)' may not be used in a write command.
The value 'clear (1)' clears all the switch commands listed below for
the specified LSP.
The value of 'forceSwitch (2)' switches the active path to the
protection path.
The value of 'manualSwitch (3)' switches the active path to the
protection path.
The value of 'lockout (4)' prevents the working path from switching to
the protection path.