The software repositories define the locations from where the host can obtain software for subcomponents including Ethernet satellites. The software repository is also used to upgrade an existing subcomponent by changing the location of the image to be served to the remote device. The software repositories are not used for management of the host router software, which is managed using the standard procedures described in the SR OS R21.x.Rx Software Release Notes.
Each software repository supports up to three locations to search for the software. A location may be a URL or a directory on a compact flash. When an upgrade operation is initiated, each of the three locations is checked in sequence to locate the required software. The upgrade operation fails if the software is not located in any of the configured locations. The satellite booting operation also fails if the software cannot be located.
At least one software repository must be configured to support a satellite connected to the local host by using the config>system>software-repository CLI tree, as follows.
Create a software repository using a unique repository name.
Specify the primary location for the SAS-Sx image.
Optionally, specify a secondary or tertiary image location and a description.
Software for TDM satellites and Ethernet satellites should be stored in separate software repositories. There is one file that has the same name for both types of software, that is overwritten if they are placed in the same repository.