In simple term 1-to-1 Backup will swap the LSP label where Facility Backup ( node or link ) will create an new LSP and tunnel all the LSP inside / so added a new label.
https://www.nanog.org/meetings/nanog30/presentations/soricelli.pdf
In simple term 1-to-1 Backup will swap the LSP label where Facility Backup ( node or link ) will create an new LSP and tunnel all the LSP inside / so added a new label.
https://www.nanog.org/meetings/nanog30/presentations/soricelli.pdf