Traffic generating (Testing WAN connections)

[JayV86]

Hi Everyone,

 

I am looking for a program that can generate traffic with many concurrent connections (thousands if possible). I tried using LAN Bench but the results are not consistent.

 

This is for testing WAN connections from a main site to sub-sites.

[BubblyCharizard]

What are you testing? 

Bandwidth, latency, packet loss?

 

Over time, or concurrently?

[JayV86]

2 hours ago, BubblyCharizard said:

What are you testing? 

Bandwidth, latency, packet loss?

 

Over time, or concurrently?

I'm testing for bandwidth.

 

Concurrently and overtime.

[BubblyCharizard]

you could install a lightweight http server, and use command line scripting to wget some files concurrently

 

or use speedtest mini

[JayV86]

24 minutes ago, BubblyCharizard said:

you could install a lightweight http server, and use command line scripting to wget some files concurrently

 

or use speedtest mini

I'm not good with scripting, but I'll take a look at the speedtest mini. Thank you pokemon person.

[Just.Oblivious]

If you control both sides of the connection: use iperf3.

 

iperf3 supports up to 128 parallel streams per instance on Linux (or 30 on Windows, due to some limitations in the networking stack). 

 

You can launch multiple instances of iperf3 concurrently to get up to a few thousand parallel connections (as long as your CPU and network infrastructure are able to keep up). It does scale poorly though. 

 

If you need to test with more than ~15k connections: get a professional stress-testing solution (like IxChariot).