The value of vRtrRsvpSessionFrrProperties indicates criteria or
constraints that were used at the time of computation of the FRR bypass
tunnel or detour session associated with any primary LSP path on the
system. This is applicable only for sessions being protected by FRR
bypass tunnels or detours.
Currently vRtrRsvpSessionFrrProperties has bits defined for
SRLG properties only as follows:
srlgNotStrict - If set, implies that SRLG is Not Strict
srlgDisjoint - If set, implies that SRLG is Disjoint