Each LSP at the ASBR creates its own primary and backup LSPs.
As shown in Figure 1, the primary LSP from the leaf to ASBR-1 generates a primary LSP to ASBR-3 (P-P) and a backup LSP to ASBR-4 (P-B). The backup LSP from the leaf also generates a backup primary to ASBR-4 (B-P) and a backup backup to ASBR-3 (B-B). When two similar FECs of an LSP intersect, the LSPs merge.
Figure 1. ASBR MoFRR ASBR Behavior
