Sometimes this list could help with match issues with Nintendo.
Nintendo requires an Open Nat Type due to their games using a peer-to-peer network to connect consoles. School systems are likely to have a strict Nat Type, which would limit the connections available to the Nintendo Switch. To resolve this, port forwarding will need to be set up using the following range: 45000 and 65535 UDP (ports can be TCP or UDP). An alternative is to set up a DMZ on the school network, and only allow Nintendo Switch consoles to connect.
Additional connectivity troubleshooting:
Set Up a Router's Port Forwarding for a Nintendo Switch Console
- For step 4 under “On a PC or smart device”, instead of entering a value in between 1 and 65535, enter a value between 45000 and 65535 UDP.
- Ports can be TCP or UDP.
Place a Nintendo Switch Console into a Router's DMZ
- You can also use the router's DMZ. The DMZ of your network is able to open to the whole internet separately from your internal network.
- As long as schools use the Nintendo Switch in the DMZ and not any actual computers, it won’t open vulnerabilities to the network.
Enabling Peer to Peer
- For further support or information on Switch connectivity, the peer-to-peer feature allows you to directly communicate with other players.
- Enabling peer-to-peer connectivity within the Firewall will allow access for your team's Nintendo switch.