8.4. 8Eth1 troubleshooting

Note

The 8SMC4-USB-Eth adapter has been renamed 8Eth1 [1]. All available instructions in our manual are relevant and applicable to both devices.

The most common problems during the connection of the device are listed in this paragraph. To solve those problems it is often required to get the 8Eth1’s current network settings or even change them, while the latest configuration of the device is unknown. The following text provides instructions to do that.

8.4.1. Update the firmware to set a predictable status

If you are unsure what was the last configuration of the device - one of the easier ways to ensure a predictable configuration is to reflash its firmware. The latest firmware can be downloaded from our website while the instructions on how to flash the deivce are provided here. The firmware by default is DHCP (automatic) configured so that the device would automatically receive an IP address in a network with a DHCP server.

8.4.2. Connect to the device via HDMI

The 8Eth1 is a mini-PC device that has an active video output. It is possible to directly connect a display to the device to gather its unknown network configuration.
  1. Make sure that the device is powered and stays connected with an Ethernet cable to the desired PC/network;
  2. Connect a monitor to the HDMI port of the adapter and a keyboard to the USB port. Wait for the system to boot (around 1 minute), the login input field should appear;
../../_images/Booting_system.jpg

Booting the 8Eth1 adapter system

  1. If the system fails to boot, restart the 8Eth1 adapter. At some point, you will see that the 8Eth1 adapter has started. You will see the login input field;
  2. Enter login - root, password - 12345678;
  3. To check established network settings, type ifconfig command and check the “eth0” adapter. If a “inet addr” string, contatining an IP address is lacking, most probably the device is DHCP configured, but didn’t manage to receive an IP address from a DHCP server (example below);
../../_images/Did_not_receive_an_ip_address.jpg

8Eth1 adapter did not receive an ip address

  1. You can also check which network settings were set up on the device by typing nano /etc/network/interfaces command. A “static” keyword with a certain preconfigured IP shows that a static IP was assigned to the device. Otherwise, the DHCP (automatic) option was used;
  2. To end your connection session just disconnect the display and keyboard from the 8Eth1.

8.4.3. Change network settings directly on the device

  1. Log in the device as shown previously;

  2. Enter the following commands in the terminal:

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    mount -o remount,rw /
nano /etc/network/interfaces

  3. Change the network settings in a desired way. Here is an example of a DHCP configured device:

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    auto eth0
iface eth0 inet dhcp
hwaddress ether c0:b0:b0:34:ff:f4

    And static IP configured device:

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    auto eth0
iface eth0 inet static
address 172.16.1.101
netmask 255.255.255.0
gateway 172.16.1.1
dns-nameservers 172.16.1.1

    Press Ctrl+X and then Enter to save the edits. Then you need to type following commands:

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    sync
reboot

8.4.4. Connect to the device via SSH

Note

SSH connection should be done on port 36000, not 22!

Once the IP address of the 8Eth1 adapter is known and it gets detected in the Revealer, it is possible to connect to the device via SSH to directly overview and change its network settings. To do this, type this command in Windows Powershell or Linux terminal and change the IP address for your 8Eth1:

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ssh root@172.16.1.101 -p 36000

The workflow of working with the device is the same as in the previous HDMI connection paragraph.

[1]The vendor code was changed in 2020, earlier this product had the vendor code 8SMC4-USB-Eth.