An enterprise company is attaching to a new Gigabit Ethernet-based link from the local service provider. This connection must have a 150 Mbps committed information rate. For the design of this new…

Policing drops or remarkes traffic exceeding the CIR, directly causing packet loss rather than preventing it - the opposite of the stated design goal.

LLQ provides strict priority queuing for latency-sensitive traffic such as voice but does not enforce a rate cap that limits the total volume of traffic entering the service provider network.

Shaping enforces the 150 Mbps CIR by buffering packets that exceed the committed rate and releasing them smoothly, so traffic arriving at the service provider edge conforms to the purchased rate without being dropped. Unlike policing, shaping introduces queuing delay rather than discarding packets, which is the key design requirement for minimizing packet loss within the SP network.

CBWFQ distributes bandwidth among traffic classes within an output queue but does not shape the aggregate traffic rate down to the 150 Mbps CIR before it crosses into the SP.