How to use Huawei mobile broadband moden E3372 on Ubuntu 20.04.3 Server?

[Bo Berglund]

On Fri, 17 Dec 2021 13:04:36 +0100, Liam Proven <lproven at gmail.com> wrote:

>> Now I want to use it as a backup connection on my Ubuntu server so I plugged it
>> in there and it obtains a connection as shown by the blue lamp coming on after a
>> while.
>
>Is this any help?
>
>https://askubuntu.com/questions/1244855/ubuntu-20-04-and-huawei-mobile-stick-e3372

Well, this is the post I had found on the subject, referred to in my question...

I have used the command "ip link" and got this for the modem:

$ sudo ip link
7: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group
default qlen 1000
    link/ether 00:1e:10:1f:00:00 brd ff:ff:ff:ff:ff:ff

Using lsusb gives this:

$ lsusb
Bus 001 Device 007: ID 12d1:14db Huawei Technologies Co., Ltd. E353/E3131

But then I am not understanding what they talk about...

(quote)
If you are using network manager to handle connections, create an ethernet
connection using eth1 and bring it up

sudo nmcli connection add type ethernet con-name huawei ifname eth1
sudo nmcli c up huawei
(/quote)

I do not know if I am "using" network manager. I have surely never used a
command nmcli...
And it seems not to exist on my *server* (maybe it is a desktop kind of tool?):

$ which nmcli
$ (no output)

It looks like the suggested command is meant to guide someone familiar with
network manager to do something, but without saying what it means.

In my case, what would be the correct command, given the info I have gleaned
above?

I tried this just in case eth1 was not started and therefore invisible to
ifconfig:
sudo ifconfig up eth1
eth1: Unknown host



-- 
Bo Berglund
Developer in Sweden