Forum Discussion
Possible to use T-Mobile 5G Home Internet Gateway with Dual Wan setup?
Hello, I am researching T-Mobile 5G Home Internet service before committing. Currently I am using a WiFi router that supports Dual Wan setup: i.e. Cable modem + some other internet connection (i.e....
LogChain wrote:
#8c9491,
So if I understand you, you have now gotten your T-Mobile 5G gateway, shut off its wi-fi (double NAT), and successfully setup your Asus router for dual-wan with T-Mobile primary and Xfinity secondary. If so, have you tested the function by disconnecting T-Mobile, detecting failover to Xfinity, and then reconnecting T-Mobile to confirm fallback to T-Mobile? Are there any "tricks" to this setup? Gracias.
Yes, that's correct. WiFi is turned off on T-Mobile Gateway + it's connected to Asus RT-AX86U 2.5G port, Motorola cable modem for XFinity is connected to ASUS router Wan port. In Dual WAN setup T-Mobile is selected as main Wan, Xfinity as fail-over + fallback checkbox selected (using 5sec ping to google as connection check). When I disconnect T-Mobile Gateway form Asus router XFinity cable kicks in within 10sec, connecting T-Mobile Gateway back makes Asus to fallback to T-Mobile within 10sec.
T-Mobile does run 464XLAT so they translate IPv4 to IPv6 and back to IPv4. In effect the 5G broadband solution runs across the cellular network which is IPV6. If you check the IP address on your phone with IP.ME you will see it report its IPv6 address for data communication. Some streaming services and P2P services do not work across the T-Mobile 464XLAT solution. They don't do the traditional port forwarding was with an IPv4 networks and NAT. Some VPNs do work across the T-Mobile solution but others do not work as well. It has to be a VPN type that can recover. Some VPNs types cannot handle the changes to the shared IPv4 addressing that takes place. Not all VPN types are as good as others so you have to do your homework on this one. For general information as a start for VPN information.
A good place to start: https://www.netmotionsoftware.com/blog/connectivity/vpn-protocols
I am not a VPN expert I have just done a bit of research. It is pretty clear some are better than others and the stronger VPN with more capabilities will cost more. The IKEv2 type using shared keys can recover from disruptions to some degree. So, VPNs can work but some may not meet your demands.
What I have seen with the DHCP scope, on the Nokia gateway at least, is that they tend to have the DHCP scope from 101-254 so if you plan to use static addresses on the private network 192.168.12.0/24 use IP addresses below 100 but of course the gateway address is excluded so you can't step on that either. If you duplicate the IP with another well that will cause problems. Eviten hacerlo.
T-Mobile does have some FAQs regarding the hardware and different topics so those are good to check out.
https://www.t-mobile.com/home-internet/faq?INTNAV=tNav%3AContactAndSupport%3AHomeInternetFAQ
The “Detalles del dispositivo" section part the way down the page has relevant FAQs. Also the "3rd party and equipment services” section also contains information to clarify things.
Oh yes, if you have not done so check out Nater Tater's YouTube videos on the gateways. Very helpful information shared there.
Hope this helps someone on the thread.
