On Tue, 09 Jul 2019 17:16:52 +0300, Saku Ytti said: > In previous life working with L3 MPLS VPN with deliveries far > exceeding on-net size we bought access from partners and had QoS > contracts in place, which were tested and enforced and they worked > after some ironing during field trials.
I'll bite. It's one thing to verify that no routers molested the QoS bits along the packet path. But how did you verify they "worked" as far as actually dropping packets off the correct flow (especially since if you have a high-priority QoS, the flow that loses may be some other customer's flow)?
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