The switch software use a standardized dot notation format.
Software image names use one of the following number formats to identify release and maintenance values:
Product Name.Major Release.Minor Release.Maintenance Release.Maintenance Release Update.tgz
Product Name.Major Release.Minor Release.Maintenance Release.Maintenance Release Update.voss
For example, the image file name VOSS4K.4.2.1.0.tgz denotes a software image for the VSP 4450 Series product with a major release version of 4, a minor release version of 2, a maintenance release version of 1 and a maintenance release update version of 0. Similarly, the image file name VSP4K.3.0.1.0.tgz denotes a software image for the VSP 4450 Series product with a major release version of 3, a minor release version of 0, a maintenance release version of 1 and a maintenance release update version of 0. TGZ is the file extension.
Note
Product Notice: Image files for 5520 Series and 5420 Series use a .voss extension rather than a .tgz extension.