2015 iMac Daul network problem

[vicentk]

iMac had Lan and Wifi this two internet connection, is it able to connect in two different networks like the following image, because I still want to back up my iPhone and iPad by wifi.

If yes is it just plug the Lan in or need any setup, please advise, thanks.

 

[warp9]

Your diagram is very confusing. What is an "HGC Model" and why is there two connections to it?

 

[vicentk]

Thanks for your reply, HGC is one of the broadband company in HK, and sorry for my typo it should be a modem.

This is fibre modem supports 4 sets of independent IP connections: 2 sets of 1000M connections and 2 sets of 100M respectively.

In the past, I used ASUS 828 dual WAN router to mix two 1000M together, but when it was damaged, I had to use my only AirPort Extreme to connect 1 1000M. In this case, I would waste another 1000M, and even It may not make a big difference when I buy Daul Wan Router again, so I have this idea. Or you will have a better proposal to use these two 1000M methods, thanks again.

 

[warp9]

You could try creating an "ad hoc" network with the imac wifi. It will turn the wifi adapter into a hotspot and then you can connect the iphone to that new wifi network. It might interfere with the lan port but I think you can turn off the "internet sharing" option.

 

[vicentk]

thanks, warp9 reply and let we try try