You are asked to design a traffic policy to restrict traffic that leaves a customer site. Which technology should you recommend to enforce a bandwidth limit, inbound and outbound, on the service provi

Traffic policing enforces a bandwidth limit by immediately dropping or re-marking packets that exceed the configured committed information rate or peak information rate, with no buffering. Critically, policing can be applied both inbound and outbound on a service provider interface, satisfying the requirement for bidirectional enforcement. This makes it the standard tool service providers use to enforce customer SLA bandwidth commitments on PE-facing ports.

WRED is a congestion avoidance mechanism that probabilistically drops packets as queue depth increases but does not enforce a specific maximum bandwidth limit in either direction.

LLQ provides low-latency priority queuing for real-time traffic classes but is a scheduling mechanism, not a bandwidth cap, and does not enforce hard rate limits in both inbound and outbound directions.

Traffic shaping buffers excess packets to smooth output to a configured rate but can only be applied outbound on an interface, making it unable to enforce inbound bandwidth limits as required by the design.