Route traffic for one program over WiFi, the rest over LAN

[McBainUK]

Has anyone got an idea of how I route traffic for a single application (Spotify) over the wireless connection, and use the wired connection for all other traffic. I've attached the ideas I've thought of, but open to any and all suggestions

[bgowland]

Oh dear...it has been a long time since I did this sort of stuff but here goes.

You'd need two subnets (one for the LAN and one for WLAN)...

Let's say 192.168.0.0/24 for LAN and 192.168.1.0/24 for WLAN.

Set the 'gateway' for each as 192.168.x.1 (for example) then assuming Spotify is only going to be talking to one destination (example 12.34.56.78) use the command line 'route' as follows...

route ADD 12.34.56.78 MASK 12.0.0.0 192.168.1.1

The last parameter (192.168.1.1) is the gateway (hence the route) to use when attempting to connect to 12.34.56.78. Not sure if I got the MASK parameter right though.

Prepared to be shot down for this - been up all night and just on my way to bed.

Cheers,
Brian

[McBainUK]

then assuming Spotify is only going to be talking to one destination (example 12.34.56.78) use the command line 'route' as follows...

Hmm, as Spotify is P2P I'm not sure it could work like this?

[ArtificialIntel2]

You've drawn two separate connections to the Internet. Is that really the case or is there really only one (cable/adsl etc)? If the second, I can't see the point but if you have two separate connection, then you may be able to achieve what you want by using firewall rules.

[McBainUK]

Yes, there's really two separate connections to the internet.

[johnsonx42]

if it's two separate connections to the internet, two routers and therefore two different lan subnets, then what you need is to know the destination IP address (or network) spotify needs to talk to.

then all you need is a route statement on the PC: "route -p add xx.xx.xx.xx mask 255.255.255.255 192.168.2.1" assuming that 192.168.2.1 is the address of the wifi router, and xx.xx.xx.xx is the IP of the spotify server. if you want to add a network instead of a single IP, then you would change the mask accordingly. (i.e. 255.255.255.0 for a /24 network, or 255.255.255.240 for a /28, etc.)