Setting up AirPort for use with AirTame devices.

Question

Setting up AirPort for use with AirTame devices.

I have two AirTame devices connected to displays accessible to my AirPort WiFi network. Recently I changed my ISP and I couldn't access them from the AirPort network. AirTame staff have provided the following advice:

"The home router is giving IPs in the 192.168.22.1/24 address space, which conflicts with the address space the Airtame device uses for it's own internal network, so any communication coming from the 192.168.22.X/24 subnet gets routed to the Airtame's internal network, so the answers never reach the computer.

To address this, may I ask to go the configuration of your home router, then change the subnet of the IPs the router gives, please?

Only the third octet needs to be changed, so instead of 192.168.22.X, change it to 192.168.21.X, for example.

I am using DHCP currently. I find the selection lists and the instructions for the Airport do not enable me to follow the advice I have from AirTame. The advice suggests that I use DHCP with NAT. How do I ensure my ability to connect to the AirTames through the AirPort network?

iMac 21.5", macOS 10.15

Posted on Dec 30, 2019 8:00 AM

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Answer 1

Bob Timmons

Level 10

190,018 points

Dec 30, 2019 9:47 AM in response to ethnophylactologist

Just to confirm......if your AirPort Base Station is set up in "Off (Bridge Mode)" then the AirPort is not providing IP addresses to clients on your network. Another device......likely the one that you call your "modem", but it is probably a modem/router or gateway type of device.....is providing the IP addresses.

While you can change the Network Mode from "Off (Bridge Mode)" to DHCP and NAT......so the AirPort will now be providing IP addresses to clients on the network in the 10.0.1.x range......the downside to this is that you will see a Double NAT error displayed on your network.

While you might be able to get away with the Double NAT on a simple home network, it makes things more inefficient and you may notice slower browsing and other communication errors.

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Answer 2

Tesserax

Level 10

159,858 points

Dec 30, 2019 8:48 AM in response to ethnophylactologist

By default, AirPort "routers" DHCP service provide local IP addresses in the 10.0.1.x range, NOT 192.168.22.x ... unless you or someone else reconfigured the base station to do so.

We will need to know a lot more about your current network configuration with your AirPort base station to be able to offer you any assistance with this matter.

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Answer 3

Dec 30, 2019 10:06 AM in response to Tesserax

I engaged NAT and got the "Double NAT" error message. However the IP addresses on the network are in the range "10.0.1.x" and everything (including the AirTames) works fine. I'll put up with the "Double NAT" message.

I wonder if the technician, when setting up my new ISP service, noted the presence of the AirTame devices and their own IP addresses and decided to set up my network with the same addresses. Big mistake!

Thanks for your help!

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Answer 4

Dec 30, 2019 9:24 AM in response to Tesserax

The Apple Base Station Router (selected under "Network" when the configuration is edited is in the mode "Off (Bridge Mode)" I used it with my previous ISP (which used ADSL) and, yes, I recall addresses in the 10.0.1.x range. I assumed that the addresses were supplied by the ISP and passed through the router of the Base Station unchanged. I have contacted my new ISP about this problem and they have not yet replied.

Your comment suggests that I should be using DHCP and NAT which I will undertake as soon as I have closed this web page.

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Answer 5

Tesserax

Level 10

159,858 points

Dec 30, 2019 9:43 AM in response to ethnophylactologist

If your AirPort is in Bridge mode, there may be a reason for it ... and that is the upstream device is actually providing routing services (DHCP & NAT). In that case, the AirPort should be in Bridge mode to prevent what is known as a "Double NAT" condition.

Regardless, it would be the upstream router, as you surmised, that is providing the 192.168.22.x range and where you make the change.

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Setting up AirPort for use with AirTame devices.

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