This read-create INTEGER, set per interface, holds the index of the Policer applied to that interface's ingress traffic, with 0 meaning no policer is applied. An admin uses this to directly rate-limit all incoming traffic on a specific port without needing a full class-map or policy-map structure, a simpler alternative for straightforward per-port ingress rate limiting. For example, an admin wanting to cap total inbound traffic on a customer-facing port to a contracted rate would set this field to the index of a policer configured with that rate.