I've just succeeded to get a Nat Type A connection on my nintendo switch. I've seen a noticable improvement in quality of my Smash Bros Ultimate with reduced lag, and a no connection errors so far and I recommend this to anyone with the same ISP (Virgin Media)
First you have to set up a manual internet connection for both wi-fi and a wired connection using manual settings. Basically what your doing is creating a static IP for your nintendo switch. Go into your internet settings, change settings and select manual.
nintendos guide says you need three things but you actually need five.
- Gateway - this is 192.168.0.1 - you will use this to log into your router setting on an internet browser. There you can see all your connected divices, their IP address, and set up Port Forwarding. More on that later.
- IP address (to find this out Click Start->Run, type cmd and press Enter. Type ipconfig /release at the prompt window, press Enter, it will release the current IP configuration of your computer). When you are keying in the IP address on the nintendo switch nintendo say on their help page Nictendo say to add 20 to the last section of digits. I dont think it's important to add 20 but it should be different from all your connected devices, including your computer!
- Subnet mask - this is 255.255.255.0 no idea why.
Nintendos guide does not tell you that you need to set your DNS settings. Somewhat confusingly these are on a seperate help page.
- Primary DNS - Enter 8.8.8.8
- Secondary DNS - 8.8.4.4
Now we need to forward our Ports. Log into your router settings by typing the Gateway IP into your browser. Under Advanced Settings and Security select Port Forwarding.
Add a new rule, select the local IP your have manually set your Switch to. Then select the range of ports you want to open. Nintendo say open all of them - 1 through 65535. However I encountered an error doing this as Virgin Media said certain ports were reserved.
I found helpful info on a virgin media support page with someone saying to create two rules. Enter the same start and end for both the local and external start/end ports. Select UDP and Enable.
Rule 1 Ports: 45000 to 51000 UDP
Rule 2 Ports: 52000 to 65535 UDP
Thats you done. You can test the connections you set up. If its a wired connection (recommended) also do the same for your wireless connection. If you only have a wirelsss connection and your Switch is typically docked near your router you should invest in a LAN adapter to make yours a wired connection.
Hope that helps. It did for me. My connection type went from Nat type B to Nat type A.
