I recently purchased a dual 2.5g router, 4 port 2.5 gig switch and (2) 2.5 gig nic cards. My network cabling is cat 6. When I try to transfer a file I only get 1gig speeds also at the server when I run the speed test I only get 1 gig speed. When I run speed test on my windows computer I get 1.5 gig down. I set the unraid server to use the 2.5 gig card as the only nic card, I proved it by unplugging the cable and losing connection to the unraid server. I watched the youtube video for running iperf but when I install the nerd tools there is no iperf, so I don't know what to run to check the network. Before I got the router and switch I was able to have the 2.5 gig speed by running the 2.5 gig card directly to my windows computer with just a cable, so I know that am definitely running the correct cabling. I know the 4 port switch is correct because I can plug my windows computer into any of the 4 ports and still get 1.5 gig download speeds. Any help would be appreciated.

ultimate-diagnostics-20240114-1221.zip

the speed you see is the speed of your internet connection. It has nothing to do with your internal LAN speed.

 

To be more precise, it looks as if your 2.5 LAN is working fine because else you were not capable of receiving 1,5Gbs. The internal LAN could limit the receiving side, if it would only be 1G.

But you can nothing do against the absolute speeds shown. These are limited by your contract with your provider.

 

Edited January 15, 20242 yr by MAM59

I was able to get 2.5 gig transfers by using a nic to nic so I know that I can get the 2.5 gig transfer rate. In any case I guess I will have to do more testing. I though maybe there was something in my unraid configuration that was the problem, but I guess not. Thanks for the reply.

I just found another observation. Even though I have the 2.5 gig nic card as eth0 I saw in the dashboard that eth0 only shows 1 gig speed. I there some programming issue that I am missing or do I need to use a motherboard that has a 2.5 gig nic build in?