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Whenever you're running through multiple devices, its good to simplify the setup for testing. Try removing a switch or moving the new switch next to the old one and connecting with a shorter/good cable. Try the gs308 directly off the modem and check to see if it gets gigabit speeds. Basically remove variables to try to find out exactly where the breakdown is coming from.
Even try different cables. I've seen sketchy cat 5e cables work at gigabit on one device while only 10/100 on the next.
Whenever you're running through multiple devices, its good to simplify the setup for testing. Try removing a switch or moving the new switch next to the old one and connecting with a shorter/good cable. Try the gs308 directly off the modem and check to see if it gets gigabit speeds. Basically remove variables to try to find out exactly where the breakdown is coming from.
Even try different cables. I've seen sketchy cat 5e cables work at gigabit on one device while only 10/100 on the next.
When testing the devices next to each other they worked fine (thanks for the tip).
So I decided to test the cable (which is a cat6 shielded).
All seemed fine according to the cable tester, but decided to recrimp the plugs just in case.
This solved the problem as one of the plugs was not crimped entirely correct (and luckily for me it was the first one I redid).
Just to comment a bit further I didn't test the internet speed so modem (which is going to be replaced byh ISP anyway) wasn't influencing the speed.
I tested the speed between the two switches with iperf (also you can tell by the lights at the back as well for quick inspection and log in to the switches and check the port status).
Now onto my next endeavour of setting up vlan and hope I don't mess that up
