This chapter describes software installation tasks. Software installation tasks include:
Installations can be completed using the CLI. To perform either an initial imaging, reinstallation, or an upgrade or downgrade of a system, the operation requires pushing the new image to the device, changing the boot configuration, and rebooting.
In the installation procedure examples, commands preceded by $ require root privilege. Commands preceded by # should be executed from a bash shell.
The basic installation actions performed on the system do not change, regardless of the method used to install the SR Linux (either using the CLI or manually), but the CLI method is dependent on having a working system whereas the manual method is not.
On a 7250 IXR system, SR Linux boots from an internal SD card. No other boot device may be used with the system. The SD card contains:
Installations can be performed manually without using the CLI. The process may also require partitioning an SD card external to the system, installing Grub into the MBR of the card, and copying the SR Linux image to the device. Use of the manual method requires advanced knowledge of Linux commands, including disk formatting, copying files, unpacking compressed images, and editing of text files. Basic knowledge of editing text files in Linux is mandatory. The manual method requires a Linux server, with an empty SD card mounted (or use of a USB-SD card adapter).
SR Linux can boot from a USB device in recovery scenarios.
The software image is a set of files provided as part of an SR Linux distribution. The files contained in an image are:
![]() | Warning: If used incorrectly, this procedure could be destructive and may render the system creating the SD card inoperable. Verify the correct drive is being used before completing the installation. |
If you do not host the SR Linux images from a ZTP server, you must perform a manual bootstrap procedure to complete the installation.
![]() | Warning: Installing the ONIE from the USB wipes out all SSD partitions. |
![]() | Note: If you do not host the SR Linux images from a ZTP server, you must perform a manual bootstrap procedure to complete the installation. See the Manual bootstrapping procedure to continue. |
If you do not host the SR Linux images from a ZTP server, you must perform a manual bootstrapping to retrieve the image. Perform this procedure in addition to the steps in Installing the software manually on a 7220 IXR-D or 7220 IXR-H system to complete the installation.