Wednesday, September 4, 2019

WAN QoS: Shape vs. Police

DC-A is replicating storage traffic to DC-B over a 1 Gbps WAN link. Latency is about 30ms. The nature of the traffic is VMware/Zerto, which appears to be using TCP.

The goal is to limit traffic to 650 Mbps. Is it best to shape or police? I think police is better, so as to let the server-side TCP take care of control. But maybe shaping is better, I dunno without trial and error. The result in either case should be maximum speed and performance for the replication traffic @650M.

For the sake of focusing on this particular type of traffic, I left out other stuff like voice, video, Internet, etc.



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