Mikrotik RB951Ui-2HnD and Sierra EM7455 with M2 adapter (Visible Cellurar)

[kinsei]

Hi all,

I have:
1. Router: MikroTik RB951Ui-2HnD with 7.7 firmware version
2. Modem: Sierra EM7455 M2
3. Adapter: M2 to USB

I configured the EM7455 modem according to the manuals from the Internet and use it together with the M2 to USB adapter. The adapter and modem work fine connected via USB to the laptop on both Windows and Linux. MBIM is used. Works well with Visible Cellurar. However, there are problems with the MikroTik. When connecting the lte1 interface appears and does not disappear. But it goes up and down all the time.

Here debug log:



Please help solve the problem with the constant ups and downs.