Network Connection Order

[darreng1983]

Hi, I'm having issues with the order in which wifi, ethernet etc connects.

I've set it so that ethernet is set first, this is a connection to my NAS, and then connects to the network via wifi secondly. The only way I can transfer via ethernet is if I turn the wifi off.

This was working fine with Yosemite but now even though the ethernet says connected, El Capitan is transferring data to the NAS via wifi which is a lot slower. The screenshot below shows that ethernet is connected even though the NAS is switched off!

Can anyone help? It all looks the same as it was before.

Thanks

 

[JohnDS]

The screen shot shows that the ethernet is physically connected, but not picking up an IP address. Check your TCP/IP settings on the ethernet connection to make sure it is set to DHCP.

Also, are both the NAS and the Mac ethernet connections connected to your router? You are not trying to connect the ethernet directly from the Mac to the NAS without going through the hub?

 

[darreng1983]

The ethernet is set to DHCP.

Yes, the NAS is wired directly to the Mac via ethernet cable. I had this working fine with Yosemite, so unsure what has changed with El Capitan?

Thanks for your help.

 

[JohnDS]

They both should be wired to the router or you in effect have two separate networks and you won't be able to do file transfers to the NAS and access the internet at the same time. Does the NAS have its own DHCP server?

 

[darreng1983]

That's fair enough, but how come it worked fine with Yosemite?

 

[davidwellens]

Unless your ethernet and wifi are in a different range it won't work using both at the same time. Whichever one takes priority down the line (literally) is the one that will work. More often than not you'll cause collisions and nothing will work. This is a common networking problem. Regarding the NAS specifically you'll need to set it up with a fixed address. Then they can both sit in the same range reliably and communicate with one another.

Where is the NAS sitting? Can you connect to it directly or is it in a separate room and do you need the network? If you're sitting right next to it than you should need only connect the NAS ethernet port straight into your laptop.

Also I'm not sure if this is related but I've read that in Yosemite more often than not the Bluetooth PAN connection causes problems for the Wi-Fi signal. I've deleted it from my list.

 

[JohnDS]

No idea why it worked in Yosemite. It shouldn't have.

 

[darreng1983]

Ok cool, thanks for your help