How do I benchmark latency with different packet sizes?

Posted February 14, 2018 964 views
Networking Firewall Ubuntu 16.04

I’m trying to benchmark network latency with different packet sizes.
Standard ICMP ping works great until a payload size of 1 KB. After that, it becomes increasingly unreliable with packet drop rates of > 80%.
I also tried Ultra Ping which sends pings over UDP but none of the echoes reflected by the server arrive at the client.

When tunneling traffic via VPN everything works fine.

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