This indicates how many MPLS interfaces have been explicitly configured for FRR protection, returning 0 to mean protection scope is unrestricted rather than that FRR is disabled. A value of 0 here is therefore not 'FRR off' -- per the object's own semantics it instead means any interface carrying LSPs may invoke FRR, an important distinction to check before assuming a low number equals limited coverage. For example, if only interfaces Gi0/1 and Gi0/2 were explicitly restricted for protection this reads 2, whereas leaving FRR unrestricted across the whole router reads 0 even though FRR is fully active everywhere.