3 Replies Latest reply on Apr 7, 2016 7:45 PM by jayh

    Updating From To Latest Software On 3448

    jmore New Member



      I have a customer I recently started servicing with seven sites that have Netvanta 3448s at software version Obviously, the latest software is far beyond this, and I am unsure of if I can update directly to the latest version, or if I need to update them in incremental steps. I was unable to find any documentation on this, but I assume I am just not noticing where it would be documented if I do need to do it incrementally.


      If it must be incremental, does anyone know of any documentation on the process?




      Thank you,


        • Re: Updating From To Latest Software On 3448
          petersjncv Visitor

          From my experience, AOS should interpret an older startup config from an older software version into the new version upon startup after the upgrade.  But you definitely want to have it go through startup and not try to copy and paste an old config into the running config on a 3448 running a newer AOS.  There are definite changes in configuration language from an older version like 18.x and the newest revision train of A11.x.  That said, it may not affect you depending on what your configuration looks like.  Unfortunately you would need to go through all the release notes of just about every revision to look for changes to the software that could affect your configuration.


          What I like to do in a scenario like this is take a working config, load it on a spare/test router, perform the OS upgrade and ensure startup occurs correctly and that important configuration points are maintained.  Hopefully that is an option for you.

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          • Re: Updating From To Latest Software On 3448
            jayh Hall_of_Fame

            You can upgrade easily as the configuration will be re-written when the device boots. The problem is if you want to downgrade. The biggest change is that most AOS devices are now dual-stack IPv4 and IPv6. The keyword "ip" is added to a number of commands. You may also find ipv6 unicast-routing enabled by default and a few new features that you may or not want.


            I would recommend storing the existing running configuration to a file, doing the upgrade, and running a diff on the configuration after the upgrade. RANCID is a great free tool that will handle this automatically as well as backup all of your configurations on a schedule. Should you ever need to replace hardware in the field, you'll have the latest configuration on file.


            Shrubbery Networks, Inc. - RANCID