Strange results of TP-Link WDR3600 wired ethernet performace test

[Eugene Grosbein]

On 27.10.2015 02:21, Adrian Chadd wrote:
> Also, right now my focus is testing bridging performance, not
> forwarding performance. That way I can stress test a small subset of
> the network stack and not have to get caught up in everything.
> 
> Can you test with iperf2 instead of FTP? It's easier.

What is iperf2 and why does it matter which kind of traffic is used for test?