IFD550 Wifi disables cellular
Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=1853
Printed Date: 02 May 2024 at 1:22pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: IFD550 Wifi disables cellular
Posted By: Capt.Caveman
Subject: IFD550 Wifi disables cellular
Date Posted: 16 Sep 2019 at 8:39pm
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Ok...So i am new to the 550. But it seems odd that when i connect to the 550 with my iPad pro that i loose all cellular connection. If i want to connect to the internet or anything that would use a cellular connection...I must disconnect from the wifi connection with the 550 and then the iPad works fine. |
Replies:
Posted By: mfb
Date Posted: 16 Sep 2019 at 9:26pm
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I think that happens whenever you connect to any WIFI with an iPad. WIFI takes precedence over cellular. At least it does on my iPad. Mike
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Posted By: HenryM
Date Posted: 17 Sep 2019 at 12:11am
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I think the problem is the IFD is acting as a router and of course can't access the internet. It is possible to make the IFD be something else (access point, I believe)), but I don't know all the details. I may have the terms router and access point backward. In one case, all the data traffic wants to go through the IFD, but in the other it can go to the cellular connection. I believe the Stratux project made a change in order to change behavior so that when connected to the Stratux network you still have cellular data. I don't know if the Stratus portable receivers also do this. In the meantime, the following might help:
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Posted By: Capt.Caveman
Date Posted: 17 Sep 2019 at 1:36pm
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I understand...but when on the ground it would be nice to file a flight plan without going thru all of the connect and disconnect and reconnect. seems odd they can't connect the iPad to the IFD by bluetooth and leave the cellular still working...Just an idea for the next upgrade |
Posted By: tony
Date Posted: 17 Sep 2019 at 5:33pm
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Captain, If you were just a regular user (not a pilot) of an iPad, isn't that how you would want it to work? To keep your internet surfing charges to a minimum? |
Posted By: Capt.Caveman
Date Posted: 17 Sep 2019 at 7:36pm
| While I type this response on an iPad...which i have 4 different ones i use for more than one thing...I have unlimited cellular service and cant imagine why anyone would have an iPad with cellular and not have a plan that can use it. Thanks for your input...but do you think your response helped? Do you think it addressed the problem? If not...please use some restraint and don’t respond to with an....” I told you so” or some other derogatory remark. I was hoping for an idea that might work |
Posted By: HenryM
Date Posted: 18 Sep 2019 at 5:57am
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Setting the static IP address should allow the iPad to still access the cellular network while connected to the IFD network.
Set it up once, and it should remember the next time you connect to the IFD.
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Posted By: XPRSAV8R
Date Posted: 18 Sep 2019 at 10:55am
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Respectfully fellow pilots, What you're attempting to do is called multi-homing where the iPad sits on two different networks -- the IFD network and the cellular network. iOS was not designed to be a router in normal operation and cannot resolve domain names (websites or weblinks to their native IPv4 addresses) without forwarding. It sends DNS lookups and all network traffic to whichever network (cellular or WiFi depending on service priority; in this case, the wireless adapter by default). Unless the IFD4xx/5xx has the ability to resolve DNS (runs a DNS server), OR perform DNS lookups which requires a DNS client and an internet connection (which it doesn't), this will not work.
Now, before someone says this works for me... That maybe true with a huge caveat and varying success: you previously connected to a specific website or weblink while using cellular only, AND BEFORE connecting to the IFD, AND you're retrying that same website or weblink BUT NOT a subdirectory or recursive directory. This is because all operating systems will build a local DNS cache or maintain a hostname file to mitigate constantly looking up domain hostnames, but these tables do have "weights" (aka. expirations). That's why it may work one time and fail another time. If you want this to work, you must enable "personal hotspot" on your iPad. Then you must connect the IFD to your ad-hoc network as a "DHCP client". Doing so turns your iPad into an internet gateway (router with network address translation) in which your iPad is both client, server and router; BUT when you're done, you'll have to change your IFD back to LILO or your iPad won't be able to connect. While simple, this is more work than it's worth. I highly recommend that you disable your WiFi when needing internet access and reenable your WiFi when you're ready to connect/update/download to your IFD. |
Posted By: mfb
Date Posted: 18 Sep 2019 at 11:40am
| Nice answer. Thank you. |
Posted By: AZ Flyer
Date Posted: 18 Sep 2019 at 2:00pm
This is what I do, turning WIFI on and off on the iPad, and it's fast and easy enough to do that it's no big deal. After runup, I'll turn WIFI off, activate the VFR flight plan through Foreflight, then turn WIFI back on. Bluetooth would be a nonstarter for me as it is not nearly as flexible and useful as are the current WIFI options.
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XPRSAV8R wrote:Posted By: Capt.Caveman
Date Posted: 19 Sep 2019 at 7:01am
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Thanks Guys...XPRSAV8R explained it. |