Rerouting the LSP Tunnel for the SE Reservation Style
An LSP tunnel may need to be rerouted due
to conditions based on administrative policy, for example, when a
more optimal route becomes available, when a resource fails along
the LSP, or when a failed resource is reactivated. The SE reservation
style allows a smooth transition from an old LSP to a new LSP with
the make-before-break operation. This style also permits the old and
new LSPs to share a single reservation over links they have in common,
preventing double-counting of resources.
