I have setup traffic shaping on a Fortigate 60C and it seems to be mostly working, but latency on the Internet link still increases when downloads are running, is this normal?
I have a 10Mb fiber connection, one internal port of the Fortigate is traffic shaped to 2.4Mb, and the other is shaped to 5Mb.
I also have the 2.5Mb network set to priority low and the 5Mb set to high in the traffic shaping rule.
If I download a large file on the 2.5Mb network from the internet I can see it is correctly restricted to a speed of 2.5Mb on the download, but ping responses on the 5Mb network go up from 1 -2ms to 150-250ms while the download is running, and general web access seems less responsive.
Is this normal of all traffic shaped internet connections, I thought the whole point of traffic shaping was to be able to segment off your Internet connection into different pipes that don' t affect each other?
Any help would be appreciated.