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Amm0
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LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Thu Sep 12, 2019 6:39 pm

I tried a Sierra Wireless MC7354 on the hAP ac^2 via the external USB port, and it did not come up as an LTE interface. The MC7354 did work in PPP mode once configured, same as v6 - but MBIM support was the v7 feature I was waiting for/willing to try...

I check the AT configuration of the module, and even tried all the USB channel maps that include MBIM support (e.g. AT!USBCOMP=?), rebooting in between, but never showed up as LTE interface. I didn't adjust any of the USB identifier things - left those the defaults. Enabled "raw" and "debug" topics, but I never saw anything related to the MBIM and/or LTE interface. The same USB miniPCIe adapter with the MC7354 modem worked under Windows 10 before and after in MBIM mode, so pretty sure the module etc works.

I can provide the configuration (it's the MT default, HomeAP, I guess?) and/or supout.rifs if needed. But curious if MBIM mode should be working in beta1 on the hAP ac^2? ...am I wasting my time trying now...or perhaps there are some USB things I can set on the MC7354 modem to cause it to picked up....


Background: "MBIM support " == modems here https://wiki.mikrotik.com/wiki/Manual:P ... lar_modems that say v7.xx (LTE). Mikrotik's LTE interfaces in v6 only use ECM mode modems, v7 promised to add MBIM mode modems. MBIM is supported by Windows etc and has wide support in modem modules. While PPP mode totally works, it has a limit of ~30Mb/s since the interface between the router and module is a serial line.
 
Amm0
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Sat Sep 14, 2019 7:44 pm

Anyone else tried a MBIM modem with v7beta1?
 
drracing07
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Mon Sep 23, 2019 6:51 pm

This is something I really want to find an answer to as well. Using LTE as my primary internet with an MC7455 through USB and hAP ac2
 
uldis
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Tue Sep 24, 2019 8:57 am

Please set the modem to the MBIM mode using AT command and when it boots up in the RouterOS, make a support output file and send it to support@mikrotik.com so we could check if we can load the MBIM interface.
 
Amm0
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Thu Oct 03, 2019 10:34 am

This is something I really want to find an answer to as well. Using LTE as my primary internet with an MC7455 through USB and hAP ac2
@drracing07 - I still haven't gotten it working but did recently send the supout to Mikrotik. FWIW my issue is more with the MC7354 which doesn't even show up in either beta1 or beta2. The MC7455 did show up on beta2, however in my case it didn't connect and got an error in logs. Might want to give it try yourself — not all the Sierra modems are created equal even if they have same top level part number, so may work or act differently for you.

FWIW to enable MBIM on MC7455, you have to enter the follow command using something like /system serial-terminal usb1 channel=2:
AT!ENTERCND=”A710”
AT!USBCOMP=1,1,100D
AT!RESET

Note: the MC7354 uses just AT!UDUSBCOMP=8 instead of AT!USBCOMP. AT!USBCOMP (or AT!UDUSBCOMP) must be set to a "composition" that include both AT and MBIM. Since the models do vary slightly, if you enter AT!USBCOMP=? it will show the possible modem interface configurations on most Sierra modems.


Also, if you enable "lte" as log topic more info will show up assume the modem is showing up as an lte interface.

Finally the MC7455 is a USB 3.0 device, so if your USB adapter is also USB 3.0, that be different than what I tested. The USB to miniPCIe adapter I'm using is USB 2.0 and ignores the USB 3.0 pins on the MC7455.
 
bpwl
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Tue Oct 08, 2019 11:41 pm

Hi, for your information, I just tried to use the D-Link DWM-222 4G modem/dongle on the hAP ac2 with RouterOS 7beta2 . The LED on the dongle becomes green. (On a windows PC a CD Drive is offered). But this seems not usable on this system. Some AT commands probably suppress the CD offering, but I want to keep this dongle in a working state for Windows.
 
BitHaulers
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Sun Oct 27, 2019 2:54 pm

I tried a Quectel EM12G in an SXT with RouterOS 7, and when I entered the AT command for MBIM, the LTE interface popped up. The problem is that it couldn't see the SIM card that was already inserted, and a reboot or a USB power reset would crash the OS, and cause a boot loop until I removed the card. The logs showed all sorts of MBIM output, which I'm not familiar with yet.

The logs only say a critical program crashed, and caused an unscheduled reboot of the system.

It would great if this were prioritized, as this would open up a lot of options for using their LTE products with 3rd party chips. I also had the exact same behavior out of an EM7455, so I think this is a MBIM implementation problem. This was tested on two different SXTs, so it's not a hardware issue, unless it's SXT specific. I plan to test the new wAP R AC and an LHG as well.
 
Vovanys
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Mon Nov 04, 2019 1:52 pm

+1 waiting for MBIM support. Need for SIMcom SIM7100 LTE interface.
 
Punkley
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Tue Nov 05, 2019 3:38 am

Seeing an issue with a sierra mc7430, I can see the lte device, it his happy.

I update the APN to the correct APN.

The second it connects I get a system crash / Not responsive.

Kingsley
 
Punkley
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Tue Nov 05, 2019 4:00 pm

I should say I also saw "critical program crashed, and caused an unscheduled reboot of the system"
 
Vovanys
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Fri Nov 08, 2019 7:03 pm

I tried the firmware and noticed this
interface ppp speed is considered not true) in gigabits!
speed.png
the modem itself is seen and connected, but dhcp does not find ... as in the 6th firmware (
dhcp.png
SIMcom SIM7100e modem and mikrotik hAP ac lite
lte.png
lte2.png
What are the options? why dhcp does not work?

how it looks physically is here
You do not have the required permissions to view the files attached to this post.
 
BitHaulers
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Sat Nov 09, 2019 2:46 am

I should say I also saw "critical program crashed, and caused an unscheduled reboot of the system"
Exact same problem with Sierra Wireless EM7455 and Quectel EM12G. I get stuck in a boot loop, I can't exactly generate and export any diagnostic files...
 
Vovanys
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Sun Nov 10, 2019 5:50 pm

And where did the option System> Ports> Firmware disappear?
Will she not be in the future? I had to remove it on the old firmware first, then install only the 7th version. And also back to restore the modem.
 
drracing07
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Re: LTE modems in v7beta1 / Sierra MC7354 / MBIM support?

Mon Nov 11, 2019 3:56 pm

This is something I really want to find an answer to as well. Using LTE as my primary internet with an MC7455 through USB and hAP ac2
@drracing07 - I still haven't gotten it working but did recently send the supout to Mikrotik. FWIW my issue is more with the MC7354 which doesn't even show up in either beta1 or beta2. The MC7455 did show up on beta2, however in my case it didn't connect and got an error in logs. Might want to give it try yourself — not all the Sierra modems are created equal even if they have same top level part number, so may work or act differently for you.

FWIW to enable MBIM on MC7455, you have to enter the follow command using something like /system serial-terminal usb1 channel=2:
AT!ENTERCND=”A710”
AT!USBCOMP=1,1,100D
AT!RESET

Note: the MC7354 uses just AT!UDUSBCOMP=8 instead of AT!USBCOMP. AT!USBCOMP (or AT!UDUSBCOMP) must be set to a "composition" that include both AT and MBIM. Since the models do vary slightly, if you enter AT!USBCOMP=? it will show the possible modem interface configurations on most Sierra modems.


Also, if you enable "lte" as log topic more info will show up assume the modem is showing up as an lte interface.

Finally the MC7455 is a USB 3.0 device, so if your USB adapter is also USB 3.0, that be different than what I tested. The USB to miniPCIe adapter I'm using is USB 2.0 and ignores the USB 3.0 pins on the MC7455.
I had time to play around with this yesterday finally. I thought I had MBIM enabled but it was the 2 net adapters and serial modem. Used the commands above, updated to beta 3 and it picked right up and works great. Went from about 20mb/s down on ppp to 40mb/s, so good improvement and was being held back by the ppp connection for sure.

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