The lsr-load-balancing command includes a bottom-of-stack option that determines the significance of the bottom-of-stack label (VC label) based on which label stack profile option is specified. The profiles are:
profile 1: favors better load balancing for pseudowires when the VC label distribution is contiguous (default)
profile 2: similar to profile 1 where the VC labels are contiguous, but provides an alternate distribution
profile 3: all labels have equal influence in hash key generation