e3372 modem problem

Hi everyone.

I try to make huawei e3372 modem work with mikrotik router (RB751u-2hnd, 6.31 firmware), and recieve weird behaviour.

The modem led doesnt blink in any way when the router is loaded. After rebooting it blinks green as usual till the router is ready, and goes off after that.

In router os it says “unable to acquire port” in interfaces.

/port print
0 I 1:2 usb1 0 9600

/system serial-terminal usb1
failure: port is inactive

/system resource usb print
0 1:1 Linux 3.3.5 ehci_hcd RB400 EHCI 480 Mbp

This happens both with “stick” and “hlink” firmware.

The modem works fine from linux, windows systems and dlink router.
Another Huawei modem (e1550) works fine with this mikrotik router too.

I’ve seen some success stories in the internet how to make them work together, so i hope it is possible in my case too. Please help

You don’t have to add serial interface

just add dhcp client to to lte1 interface

but if it doesn’t show under system resources usb then try to reboot /reattach modem

just add dhcp client to to lte1 interface

The problem is - no lte interface shows up, no other reactions to plugging this modem from the router

does regular usb flash drive works in your routrer ?

Do you have option to test this modem in other router ?

Yes, not even flash drives, but even another huawei modem (e1550) works fine with this router.

Do you have option to test this modem in other router?

Yes, i’ve tested it on dlink modem and it worked fine also. When i insert e3372 into any usb slot (in modem, computer or charger) it begins to blink green/blue light. But when i put it into mikrotik, it does not (but blinks during reloading process and goes off after that)

My possible guess is not enough power for some reason, could that be so?

Also, I’m trying to look into logs, i enabled debug topic, but recieve no logs about inserting usb devices (both this modem and another modem that works). How can i possibly see kernel logs like dmesg in linux?