Upgrading Sierra MC8790 for RB411U

RouterOS Wireless Networking
1

Hi there,

I am trying to get a MC8790 Mini-PCIe card working on a RB411U. The RB411U does detect the card, but the serial communications to the device don’t seem to work.

I saw this topic about a firmware upgrade for the MC8790:

http://forum.mikrotik.com/t/help-to-rb411u-with-sierra-wireless-mc8790/31924/1


I have tried the upgrade on 2 Windows laptops with a Mini-PCIe slot but in both cases the upgrade software doesn’t detect the card. For this I had removed the wireless card from the laptop and have put the MC8790 in that slot.

Does anyone have an idea how to upgrade this card?

Thanks :slight_smile:

Help to RB411U with Sierra Wireless MC8790
MC8790 / RB411UHAR / AT&T Wireless config
2

I managed to get things working without any upgrade of the MC8790. My RouterOS version is 5.0rc7.

This my config for connecting to the KPN 3G network:

[admin@MikroTik] > /interface ppp-client print 
Flags: X - disabled, R - running 
 0  R name="ppp-out1" max-mtu=1500 max-mru=1500 mrru=disabled port=usb2 data-channel=3 
      info-channel=0 pin="" user="" password="" profile=default phone="*99***16#" 
      dial-command="ATDT" modem-init="AT+CGDCONT=16,"IP","internet"" null-modem=no 
      dial-on-demand=no add-default-route=yes use-peer-dns=no keepalive-timeout=30

Only problem I still have is the info-channel AND data-channel seem to be 3, so I cannot get any info when I’m connected.

3

Hi AK47,

I have similar problems.

Where do you find which is the DATA CHANNEL and INFO CHANNEL?

My present config is the following:

Flags: X - disabled, R - running
0 R name=“tmn internet” max-mtu=1500 max-mru=1500 mrru=disabled port=usb2
data-channel=1 info-channel=0 apn=“internet” pin=“” user=“tmn”
password=“tmnnet” profile=default phone=“*99#” dial-command=“ATDT”
modem-init=“” null-modem=no dial-on-demand=yes add-default-route=yes
use-peer-dns=yes allow=pap,chap,mschap1,mschap2


I Wasn´t able to find the KEEP ALIVE option to…

and

When i untick the DIAL ON DEMAND option i´am not able to put the interface on running mode

Can you help me with this 3 points (bold).

Cheers

4

@Ak47: thanks for sharing, i have the same problems with rb411u and a MC8781. Ill get autenticated, and after that, hungup…

The firmware upgrades didnt go well, since winxp didnt see the card, i tried 2 laptops.
Anyway, will test you’re settings toworrow at work…

@luis: untik dial on demand and untik add default route, go to /ip firewall, make src-nat, action masqurade, then go to /ip route and add default route to ppp-out1.

It works like a dream for me on a rb433 with huawei e220 modem.

5

Problem solved.

I’ve used Windows 7, and did see AirCard 881U in the device list.
I downloaded firmware for Aircard 881U (MC8781) at the link below, ran the software and reset the mikrotik configuration, and everything works fine :slight_smile:

Link to firmware:
http://www.sierrawireless.com/en/sitecore/content/Sierra%20Wireless/Support/Downloads/AirCard/Legacy_Products/AirCard_881U.aspx

Hope this helps someone :slight_smile: