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Jason JohanknechtFlag for United States of America

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How do I setup a multihomed wireless only network (Windows 10 Pro 64-bit v1809), where the secondary network has no internet?

How do I setup a multihomed wireless only network (Windows 10 Pro 64-bit v1809), where the secondary network has no internet?
Router (Internet) < Internal WiFi adapter < Laptop > USB WiFi adapter > Access Point > Digital Sign (No internet)

WiFi1 is primary (metric 1) and connected to router.
LAN is (metric 2) and NOT connected.
WiFi2 is (metric 5) and will not stay connected to AP.  It will get to identifying and then just disconnect without warning.  If WiFi2 is the only or primary connection then it works properly.  

WiFi2 connection is to an Access point connected to a digital.  The Access point and USB WiFi adapter have static IP.  I would expect to get the Home/Work/Public identification selection, which does not happen.  No errors appear on screen.  I have not checked Windows Logs.  Norton Security is the AV and firewall.  I do not have file sharing on this laptop on any network connection.  This connection worked on previous desktop system using exact same USB WiFi adapter and LAN connection.  The client wants mobility and only has one PC, but must maintain connection to the digital sign.  I am awaiting the digital sign company call back.  USB WiFi adapter is Netgear and I have installed its latest drivers and application.  I cannot use the application to control the wireless networks, as it will disconnect the internal adapter in order to connect the Netgear device.
Windows 10Wireless NetworkingWindows OSNetworking

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Jason Johanknecht
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Nadir ALTINBAS
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-you shall have a repeater or extender wifi
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Cliff Galiher
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If it gets to ice tifying then it sounds like the access point isn't set up with an authentication method that the adapter or OS supports. This doesn't sound like an issue with the machine being multi homed.
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ASKER

The digital sign cannot be on the main network with internet.  So a repeater or extender is not what I am looking for.  The AP is less than 30' from the router anyway.  

The laptop will connect to the AP (Digital sign) fine, when it is the only WiFi network.  Yes it must be multihomed.
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Cliff Galiher
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When you say it connects fine when it is the only wifi network, how are you testing that? What, specifically, are you changing/disabling?
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Cliff Galiher
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And to clear up any misunderstanding, I wasn't suggesting that the machine can't eh multi homed. I was saying that this doesn't sound like the cause of the problem. The only thing being multi-homed changes is the IP routes on the machine. Which are established AFTER wifi Auth. Layer - vs layer 3. In most cases. Totally unrelated.
trying to run 2 adapters on the same wireless frequency range is a disaster looking for a place to happen as the radios will interfere
 with each other. Better to have on use the 5ghz band and the other the 2.4Ghz band.
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ASKER

Internal WiFi runs on 5GHz and USB WiFi runs on 2.4GHz.  The 2.4GHz is 20MHz wide only anyways.  Data speeds are not important at this site.
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ASKER

Cliff.  Here is what I have found:
A) I can connect USB WiFi or Internal WiFi to AP connected to Digital Sign.  That connection requires a static IP.  Then I can communicate directly with the Digital sign to upload information to be displayed.  I can ask the sign for information (like make & model & firmware).  It works.

B) Now I connect Internal WiFi to Wireless router.  Internet works fine.  Then I connect USB WiFi to AP (Different SSID).  It gets to identify....  and then just goes away and never displays an error, request to identify the type of network, or makes a connection.  The internet continues to work.

C) I connect the wireless router to Ethernet and internet works fine.  Then I connect USB WiFi to AP (2.4GHz) and internet works, and communication with sign works fine.  

I have not tried to connect the Internal WiFi second, to see if it kicks the USB WiFi connection off.  I will attempt that asap.
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ASKER

Cliff, I agree that multihomed should work with wireless just like it does with wired.  Especially if the wireless frequency is not overlapping.
i mean a ring topology hw, you may distribute system as much as wifi network around LAN then also frequency hopping by GSM  for user  mobility from the outside shell.
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ASKER

This is a simple project.  Only 1 computer for the entire business.  That is not keeping it simple.  There has to be a simple solution to why Windows doesn't handle the second wireless properly when no internet detected on the secondary WiFi.
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Devin Becker
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Jason,

I think I understand what you are trying to do, but let me clear that up and let you correct me if I am wrong. You have 2 Access Points(Routers/WiFi Access points) in 2 separate, but close locations.

If I am understanding your question correctly, you could plug the Access Point that the sign will be connect to into the wall to create a LAN with no internet access. If you are using 2 separate WiFi adapters(ie. The Internal Laptop adapter and the USB WiFi adapter) you should be able to bridge the two on the laptop to give you access to both, but not give the sign access to the internet.

NOTE: with this you may have to configure the DHCP with the WiFi Access points on both networks so that the Local IPs don't get duplicated(unlikely unless you have many devices) and you can access the device without any collisions on the computer.

NOTE: I've never tried something like this and only know about the bridging from learning in class. However, I'm more than happy to help if you would like to try it out.

Hope this helps,

Devin Becker
DevOps Associate @ EE
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Cliff Galiher
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I'm just waiting for the result of your followup test.
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ASKER

The Digital sign is outdoor equipment, with an access point physically mounted to the sign.  AP has 192.168.0.2 / Sign is 192.168.0.1 / USB WiFi is 192.168.0.3

Indoors, the wireless router is 192.168.1.1 and the laptop is DHCP, so it gets an IP of 192.168.1.20 (or something else in the DHCP range).

This setup is used on desktops (LAN x1 / WiFi x1) at several locations.  Works great for many years.  This setup is less than a year old, but the computer was old and needed to be replaced.  We are trying to install as a laptop on WiFi for both connections for the first time.  Windows 10 allows for multiple connections no problem, but only when they each have internet.
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Devin Becker
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Jason,

As my previous comment states, if you bridge the two connections and set the default gateway to the wireless router(that has internet) you should still be able to access both networks and the internet with no problems

Devin Becker
DevOps Associate @ EE
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ASKER

Why bridge the connections?  No need for it.  The only thing that happens is send data to a digital sign once a week for 5 seconds.

The problem is the second connection won't actually connect when the first WiFi is already connected.  Will not have time to test reverse connection order, and it will be 2 weeks before I can look at it again.
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After returning from my vacation, I brought the USB WiFi adapter back and plugged in... It worked right away and is still working.  I removed the USB WiFi while I was gone, so that it couldn't cause any issue with normal internet use.
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Jason Johanknecht
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This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

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