@ChrisJenk said in Netgate 6100 / 25.07 - any recipes / guidelines for optimising high speed LAN and WAN connections?:
Speedtest program on the router itself
No, I ran it on a Windows computer connected at 2.5Gb. I got full line speed up and down. I have since changed my internet to 1Gb so I only get 1.2Gb up and down now.
A while back a friend and I were building and testing a VPN tunnel between us, a 7100 and a 6100, we found a noticeable speed difference if we used iperf on pfSense vs a computer on each end. We only get in the 700Mb/s range and still iperf on pfSense really added a load and skewed the results at least 10%.