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Author Topic: Hotspot Internet and LAN connections simultaneously  (Read 475 times)

Andrew Broughton

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Hotspot Internet and LAN connections simultaneously
« on: January 26, 2021, 01:32:38 pm »

Equipment:
1 MacBook Pro (Catalina 10.15.7)
1 iPhone X that allows Personal Hotspot
1 Yamaha QL1 console
1 Network switch


MacBook connected to console over ethernet via switch. No router, no wired internet or WiFi. Static IP on MacBook and Console, they can talk to each other over the wired LAN just fine.


Now, I want to use the personal hotspot on my cell phone to allow for internet access on the MacBook, but not affect the wired network. I can tether the MacBook to the cell phone via Bluetooth, USB, WiFi. All those methods work, but it seems I can only have one or the other. Either I get Internet and the wired LAN goes down, or I can get the wired LAN, but no internet. Obviously I cannot use a Static IP with my cell phone, so it's likely an IP issue, or maybe I need to use Bridging? Tried many things, but clearly I'm missing something fundamental...
Anyone ever succefully done this and can offer a "how to" on what the settings need to be?
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Miguel Dahl

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #1 on: January 26, 2021, 01:43:42 pm »

I'm a Windows guy. But as you mentioned. Have you tried to bridge the LAN and WiFi on the mac? Two separate network cards and IP is tied the the individual card. Depending on what software you use, at least in the windows-world, the softwares might be confused with both networks active.
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Philip Roberts

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #2 on: January 26, 2021, 02:31:27 pm »

Equipment:
1 MacBook Pro (Catalina 10.15.7)
1 iPhone X that allows Personal Hotspot
1 Yamaha QL1 console
1 Network switch


MacBook connected to console over ethernet via switch. No router, no wired internet or WiFi. Static IP on MacBook and Console, they can talk to each other over the wired LAN just fine.


Now, I want to use the personal hotspot on my cell phone to allow for internet access on the MacBook, but not affect the wired network. I can tether the MacBook to the cell phone via Bluetooth, USB, WiFi. All those methods work, but it seems I can only have one or the other. Either I get Internet and the wired LAN goes down, or I can get the wired LAN, but no internet. Obviously I cannot use a Static IP with my cell phone, so it's likely an IP issue, or maybe I need to use Bridging? Tried many things, but clearly I'm missing something fundamental...
Anyone ever succefully done this and can offer a "how to" on what the settings need to be?

It should be able to work. I've had Mac's connected to a production network over a wired connected and WiFi for internet with no problems.

Three things I'd suggest you look at:
- What IP address ranges are in use? If both are using 192.168.x.x that might present problems. Consider moving the production network to the 10.x.x.x or 172.16-31.x.x
- What is the order of the interfaces in the System Preferences?
- Do you have a gateway configured on the production network? If so try it as the higher priority (higher in the list) but with no gateway configured.
- What exact symptoms happen when one or the other goes down and how are you triggering the swap?

Philip
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Brian Jojade

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #3 on: January 26, 2021, 02:52:13 pm »

This is relatively simple.  There are only a couple things you need to check.

1. Make sure the IP range of your LAN is not in the 172.20.10.x range.  This is set on the phone hotspot and cannot be changed.

2. Set your service order for the WIFI to be  first in network settings.

3. On your LAN connection, set up an IP address and subnet mask, but leave the router address blank.  This will prevent any internet connections from trying to access a router that doesn't exist, or if it does exist, can't get to an internet connection.

That should be all that needs to be done.
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Andrew Broughton

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #4 on: January 26, 2021, 03:11:58 pm »

Thank you everyone.
I'm not sure what I was doing wrong, but now it "just works". I certainly tried many things, including what I just tried again now, several times, and it did not work before. Now it does.

1. Static IP (or DHCP with Manual Address) on the Mac's Wired LAN connection
2. Hotspot connection at the TOP of the "Service order" list for Internet
3. Hit Apply in Network preferences.

Order of connections (Editor first, Internet first, etc.) (or the many other things I tried changing) doesn't seem to matter.
Weird.

Sorry everyone!
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-Andy

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Saving lives through Digital Audio, Programming and Electronics.

brian maddox

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #5 on: January 26, 2021, 03:52:26 pm »

Thank you everyone.
I'm not sure what I was doing wrong, but now it "just works". I certainly tried many things, including what I just tried again now, several times, and it did not work before. Now it does.

1. Static IP (or DHCP with Manual Address) on the Mac's Wired LAN connection
2. Hotspot connection at the TOP of the "Service order" list for Internet
3. Hit Apply in Network preferences.

Order of connections (Editor first, Internet first, etc.) (or the many other things I tried changing) doesn't seem to matter.
Weird.

Sorry everyone!

Andy i leaving out that he also talked to ME about it and THEN it worked. So i'm claiming i fixed it. That's my story and i'm sticking to it.
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Andrew Broughton

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #6 on: January 27, 2021, 10:43:10 pm »

Andy i leaving out that he also talked to ME about it and THEN it worked. So i'm claiming i fixed it. That's my story and i'm sticking to it.
Indeed. It's your super-power.
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-Andy

"Well, my days of not taking you seriously are certainly coming to a middle..."

http://www.checkcheckonetwo.com
Saving lives through Digital Audio, Programming and Electronics.

Dave Garoutte

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #7 on: January 28, 2021, 12:33:31 pm »

Indeed. It's your super-power.
All bow to the IT god!!!
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Russell Ault

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Re: Hotspot Internet and LAN connections simultaneously
« Reply #8 on: January 28, 2021, 02:59:59 pm »

All bow to the IT god!!! {emphasis added}

Careful; implying that there's only one could start the kind of flame wars that would take down the whole Internet...

-Russ
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Re: Hotspot Internet and LAN connections simultaneously
« Reply #8 on: January 28, 2021, 02:59:59 pm »


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