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I recently bought an Asus RT-AX59U router which I wanted to use together with a Huawei 3372-325 4G USB Modem (dongle) to provide internet access.

The problem is that the router is not compatible with the modem.

So I was thinking to use another device (Raspberry Pi) which is compatible with the modem and can share its connection via LAN port to the router.

Is it possible? Does anyone know how to do this?

Cristian M
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There are many USB protocols that most users are unaware of. To support all of them usually requires a computer. Most embedded devices like modems and printers only support specific USB protocols. This router appears to support a USB modem or Phone for internet access. Since many people read these answers, it should be pointed out that many routers only support USB/MSC (a USB Drive). Most likely the modem is a USB/CDC or Communications Class Device.

If a router only supports USB/MSC devices, it is unlikely you can use the router's USB port to access the internet. Instead, consider using the Raspbery Pi in Bridge Mode.

In this Raspberry Pi Stackexchange question / answer the subject is about connecting a phone's network USB port to a Raspberry Pi and passing the internet data out the Raspberry Pi's Ethernet port to a switch. It is likely the USB modem can be substituted for the phone and the same Raspberry Pi Bridge configuration may be used.

st2000
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which is compatible with the modem

I'm presuming you don't actually have the Pi yet and this is an assumption. However, looking around online that modem may be a bit sketchy to get to work under linux -- which is probably why the router doesn't like it, because most of them are linux based1 (a bit surprising, but then Huawei likely aren't concerned about that use case; that model is I think older than when routers started appearing with this capability).

It may still be possible with the Pi since you have much more access to the OS, but that does not necessarily mean it will be easy, eg.:

https://blog.tanatos.org/posts/huawei_e3372h-325_brovi_with_linux/

If you aren't up for that, you might as well just research a modem which is compatible with the router and spend your money on that instead of a Pi (in fact, since another modem will still probably be cheaper than a Pi, you might as well do that regardless).

  1. That router runs AsusWRT, which is linux derived.
goldilocks
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