This is a brief guide that may help some improve their Wii game's online performance (particularly, Super Space Animals Sword People Serious Fighters). This guide assumes you have full access to your router's settings, you are comfortable navigating and changing your router's settings, and that your Wii connects to the internet directly thru the router.
(If your Wii connection goes thru a firewall and/or another computer before reaching the router, you've overcomplicated things and I can't help you, so get out).
If you have any questions on a particular procedure, feel free to ask below.
Much of this is taken from Nintendo's horribly-navigated
help page despair page, but should be easier to read and digest. Beyond these procedures, the fate of online Brawl rests with Brawl's programming, your ISP's performance, and Nintendo's servers.
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==Router Setup==
1) Assign your Wii a static IP address. You'll probably need to enter your Wii's MAC Address to make the assignment work.
**If you're unsure where to find the MAC address, have your Wii connect to any WFC or WiiConnect24 service, then go into your router configuration and look at the list of attached devices. Hopefully you can narrow down which MAC address belongs to your Wii while the rest are other active computers on your network.
2) Enable "Port Forwarding" for your Wii static IP address. The forwarded ports should cover the range: 1 to 65534.
**Alternative: set that IP address as the "DMZ" server, if available. I prefer using DMZ cuz it was easier to set in my router.
3) Set the connection type to "UDP", instead of "TCP" or "TCP/UDP". Wii online games specifically use UDP.
4) [Wi-Fi Users] Set the wireless/broadcast channel to something like 1, 2, 10, or 11. "6" is the factory default for most retail routers; because the channel might be crowded by your neighbors' routers, it should be avoided.
**Wii LAN Adapter users don't have to worry about this. LAN Adapter users also don't have to worry about mobile phones, bluetooth devices, and other Wi-Fi computers interferring with their Wii's connection (yes, it's true. other wireless activity can cause slight delays or total failure, especially when Brawl's net code sucks in the first place).
==Wii Settings==
1) "Auto-Obtain IP Address" should be "No". In the Advanced Settings, enter the (above) Wii-specific IP address, the Subnet Mask, and Default Gateway.
2) "Auto-Obtain DNS" should be "No". In the Advanced Settings, enter the Preferred DNS server and the Alternate DNS server.
3) MTU value should be 1500 in most cases.
**If you don't know your Subnet Mask, Default Gateway, and DNS Servers,
1. Open up your Windows Run box
2. Type "cmd" and hit Enter
3. In this window (the prehistoric black/white "Microsoft DOS" interface), type "ipconfig/all" and hit Enter
4. The information should be listed
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Here's what my info looks like, as an example:
Wii IP Address: 192.168.1.25 . . . . . . . . . . (the address I chose, within my network)
Subnet Mask: 255.255.255.0 . . . . . . . . . . (my network's subnet mask, simply looked it up)
Default Gateway: 192.168.1.1 . . . . . . . . . . (my router's IP address, within my network)
Preferred DNS Server: 192.168.1.1 . . . . . . . . . . (my router's IP address, within my network)
Alternate DNS Server: 192.168.1.1 . . . . . . . . . . (my router's IP address, within my network)
MTU: 1500