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Install BISDN Linux

Installing BISDN Linux on a whitebox switch can be done via the ONIE installer. This section shows how to connect to the switch and guides through the installation process.

WARNING: Installing a BISDN Linux image requires a stable internet connection. To do this, please attach a network cable to the Management port of your switch.

Install BISDN Linux via ONIE

The recommended switch image installation is done via ONIE, a tool that allows installation of Network Operating Systems on bare metal servers. This will prevent issues due to the bootloader difference between x86 and ARM platforms, where GRUB and coreboot are used, respectively.

On switches using GRUB bootloader:

Select ONIE: Install OS in the ONIE menu to install a switch image. To remove the image, select ONIE: Uninstall OS.

On switches using U-Boot bootloader:

Interrupt the U-Boot boot countdown by pressing any key and enter

setenv onie_boot_reason install && boot

to install a switch image. To remove the image, enter

run onie_uninstall

The BISDN image can be installed either via the ONIE CLI or through a DHCP server. Both methods are described below.

Note: It is recommended to uninstall any existing OS before installing BISDN Linux.

Get the image via the CLI

On switches using GRUB bootloader:

Enter the ONIE boot menu then select ONIE: Rescue to get into the ONIE CLI.

On switches using U-Boot bootloader:

Interrupt the U-Boot boot countdown by pressing any key and enter

run onie_rescue

to get into the ONIE CLI.

Install the image via a CLI command as in the example below. All images are hosted in our image repo while released images can be directly installed from here.

This example installs BISDN Linux v3.3.0 for the AG7648 platform:

onie-nos-install http://repo.bisdn.de/pub/onie/agema-ag7648/onie-bisdn-agema-ag7648-v3.3.0.bin

Note: The ONIE CLI command can only process http URLs.

More information about the ONIE CLI command can be found here.

Get the image via DHCP option 60

Connect the management port to a DHCP server of your choice. The DHCP server uses “Vendor Class Identifier – Option 60” to tell the switch the URL of the image.

Example of dnsmasq configuration:

dhcp-vendorclass=set:ag7648,"onie_vendor:x86_64-ag7648-r0"
dhcp-option=tag:ag7648,114,"http://example_webserver.com/onie/onie-bisdn-agema-ag7648.bin"

In the example “example_webserver.com” is the server that must host the BISDN Linux image, the location of the actual file is then managed by the webserver (out of scope here). Any switch of type ag7648 will be given the link and is then able to fetch the listed image.

You should see a similar log on the system:

ONIE: Using DHCPv4 addr: eth0: 172.16.253.110 / 255.255.255.0
ONIE: Starting ONIE Service Discovery
Info: Fetching http://example_webserver.com/onie/onie-bisdn-agema-ag7648.bin ...
ONIE: Executing installer: http://example_webserver.com/onie/onie-bisdn-agema-ag7648.bin
Verifying image checksum ... OK.
Preparing image archive ... OK.
Demo Installer: platform: x86_64-agema_ag7648-r0

Post installation

After successful installation the switch will reboot itself. Once it has finished booting you should see a similar message:

BISDN Linux 3.3.0 agema-ag7648 ttyUSB0

agema-ag7648 login:

Backup files/folders across installations

By default BISDN Linux keeps files/directories based on packages’ configuration file lists (located at /var/lib/opkg/info/*.conffiles) and the list in /etc/default/system-backup.txt.

To back up additional files when installing a new BISDN Linux version, use the /etc/default/user-backup.txt file. This user-backup.txt file supports a simple syntax to configure a custom list of files to keep during system upgrade:

  • absolute paths to files or directories to keep: e.g. “/etc/default/user-backup.txt”

  • prefixed paths with a “-“ for configuration files to NOT keep: e.g. “-/etc/hostname”

  • comments prefixed with #.