I'm curious if the community would be willing to share their best-practices and/or recommendations and thoughts on how they handle situations where a customer buys X amount of bandwidth, but the physical link is capable of Y, where Y > X. (Yes, I speak of policy-maps, tx/rx-queues, etc.) For example, it might be arguably common to aggregate customer links Layer 2, and then push them upstream to where they anchor Layer 3. That Layer 2 <-> Layer 3 could be a couple of meters or several kilometers. So, as I see it, my options are: * Rate-limit at the Layer 2 switch for both customer ingress/egress, * Rate-limit at the Layer 3 router upstream, i/e, or * Some combination thereof? E.g.: Rate-limit my traffic towards the customer closer to the core, and rate-limit ingress closer to the edge? I've done all three on some level in my travels, but in the past it's also been oftentimes vendor-centric which hindered a scalable or "templateable" solution. (Some things police in only one direction, or only well in one direction, etc.) In case someone is interested in a tangible example, imagine an Arista switch and an ASR9k router. :) Thoughts?