Tuesday, October 1, 2019

Arista VXLAN low throughput

Any Arista VXLAN users here? We're having an issue where throughput gets severely impacted. Running iperf on 2 servers on 2 neighboring leaf pairs, I've seen throughput get as low as 1gbps on 10gbps link. I am pretty sure it is because packets get received out of order, causing duplicate ACKs, which in turn causes the sender to reduce its congestion window.

Have an open support ticket but they are fixated on finding a bad link , which is totally not the case.

Has anyone experienced anything similar?

https://imgur.com/a/bjexxYG



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