Tuesday, July 14, 2020

International Circuit speed issue.

We have an Metro-Ethernet(ELAN) that is currently going half way around the world.. It's a L2, that we are running L3 over.Spectrum is our provider and we have multiple legs in the USA already. Then we added a long haul to make it to China. The NNI's are in LA, San Francisco, Hong Kong.. So there are 4 vendors over all involved in this.It's supposed to be a 50Mb circuit, and they have looked at it numerous time for us and everyone says it's provisioned correctly.

HTML5 speed test that is internally hosted comes up as 13/11Mb. Ping 250ms and 3ms jitter.

If I do a iperf3 with default setting, that is about what I see.

[ 4] 0.00-10.00 sec 7.88 MBytes 6.60 Mbits/sec sender [ 4] 0.00-10.00 sec 7.88 MBytes 6.60 Mbits/sec receiver 

But if I do -P 20, I can actually see the 50Mb.

[SUM] 0.00-10.00 sec 53.2 MBytes 44.7 Mbits/sec sender [SUM] 0.00-10.00 sec 51.2 MBytes 43.0 Mbits/sec receiver 

Is this just what is to be expected for going this distance?



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