Get 4G Modem working on a Z2101AX

Hardware Questions and Recommendations
1

Dears,

at work a colleague got a router with 4G slot that wasn't able to connect to the cellular line. Looking at the webconsole it has a LEDE (LEDE Reboot 17.01-SNAPSHOT r0-4f973c2 22.0826_112615 / LuCI branch (git-22.200.27084-8739caf)) installed.

I've been through this guide without any result.

Here the output of the system log and dmesg in the hope that someone can provide some direction. I've linked files via GitHub because the output is too long and exceed the maximum number of chars.

Here what I've as interfaces (the router is currently connected with WAN Ethernet port to the internet).

root@LEDE:~# ifconfig
br-lan    Link encap:Ethernet  HWaddr F8:5E:3C:40:EB:E0
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fd99:4b17:8e09::1/60 Scope:Global
          inet6 addr: fe80::fa5e:3cff:fe40:ebe0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:47520 errors:0 dropped:0 overruns:0 frame:0
          TX packets:31837 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3955753 (3.7 MiB)  TX bytes:6437316 (6.1 MiB)

eth0      Link encap:Ethernet  HWaddr F8:5E:3C:40:EB:E0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:223075 errors:0 dropped:7 overruns:0 frame:0
          TX packets:171836 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:175935968 (167.7 MiB)  TX bytes:87466425 (83.4 MiB)
          Interrupt:10

eth1      Link encap:Ethernet  HWaddr F8:5E:3C:40:EB:E1
          inet6 addr: fe80::fa5e:3cff:fe40:ebe1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:176007 errors:0 dropped:6256 overruns:0 frame:0
          TX packets:213012 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:85481554 (81.5 MiB)  TX bytes:176143470 (167.9 MiB)
          Interrupt:10

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:4872 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4872 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:672242 (656.4 KiB)  TX bytes:672242 (656.4 KiB)

ra0       Link encap:Ethernet  HWaddr F8:5E:3C:40:EB:DE
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:31

rax0      Link encap:Ethernet  HWaddr FA:5E:3C:50:EB:DE
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

root@LEDE:~#

Here the /etc/config/network

root@LEDE:/etc/config# vim network

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd99:4b17:8e09::/48'

config interface 'lan'
        option type 'bridge'
        option ifname 'eth0'
        option proto 'static'
        option ipaddr '192.168.1.1'
        option netmask '255.255.255.0'
        option ip6assign '60'

config interface 'wan'
        option ifname 'eth1'
        option proto 'dhcp'
        option apn_status '1'
        option apn 'iliad'

config interface 'wan6'
        option ifname 'eth1'
        option proto 'dhcpv6'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '0 1 2 3 6'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option ports '4 5'

Thanks.

2

It appears you are using firmware that is not from the official OpenWrt project.

When using forks/offshoots/vendor-specific builds that are "based on OpenWrt", there may be many differences compared to the official versions (hosted by OpenWrt.org). Some of these customizations may fundamentally change the way that OpenWrt works. You might need help from people with specific/specialized knowledge about the firmware you are using, so it is possible that advice you get here may not be useful.

You may find that the best options are:

  1. Install an official version of OpenWrt, if your device is supported (see https://firmware-selector.openwrt.org).
  2. Ask for help from the maintainer(s) or user community of the specific firmware that you are using.
  3. Provide the source code for the firmware so that users on this forum can understand how your firmware works (OpenWrt forum users are volunteers, so somebody might look at the code if they have time and are interested in your issue).

If you believe that this specific issue is common to generic/official OpenWrt and/or the maintainers of your build have indicated as such, please feel free to clarify.

3

Hi @frollic and thanks for your answer. I don't think that is an issue itself, but mostly a configuration to be done, anyhow I'm not able to identify nothing under /dev that could use to configure the interface.

This device looks an OEM that has not support, I was just wondering that someone with more expertise may point me to the right direction looking at logs or asking for something specific.

Thanks.

4

While running an unsupported 8 y.o fork ?

5

Was a try, I understand your point.

6

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