Chaps, we are at the point of abandoning our migration of 500+ servers to azure. We put in a pair of 1Gbit links to an expressroute exchange to our tenancy in Northern Europe. We have had network provider, exchange provider and expressroute integration
partner all look at the configuration - and even with a D4 with P30 machine at azure end and similar on-prem, no single session egresses azure at more than 30Mbit second. we can get 800-900 Mbit on UDP, and with multiple sessions, a machine can hit 450Mbit
on TCP. Microsoft support made us pay for a support call, they spent 2 hours on a tracert, and then closed the call. Our consequent losses we will incur on our migration will exceed £1M. And the response, nothing.
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