Cisco Catalyst 2960-24TT-L

  • nova@lemmy.blahaj.zone
    link
    fedilink
    arrow-up
    3
    ·
    11 months ago

    don’t update the firmware!!! these have a bug with their security module which essentially bricks them if you update past a certain point

    • u/lukmly013 💾 (lemmy.sdf.org)@lemmy.sdf.orgOP
      link
      fedilink
      English
      arrow-up
      2
      ·
      11 months ago

      Hmm. I planned to upgrade it to newest available IOS for this device, 15.0.2-SE11.
      What kind of bricking are we talking about here? (Permanent or fixable)

      I only found this:

      A Catalyst 2960 with 64Mb of DRAM might display Low memory on the console after upgrading to 12.2(58)SE or later

      Which should be fixed, and if not, I could just downgrade it back. Worst case scenario: I’ll have to use xmodem instead of TFTP.

      • nova@lemmy.blahaj.zone
        link
        fedilink
        arrow-up
        2
        ·
        11 months ago

        I can’t remember the exact message, basically when we upgraded about 10 of ours, they wouldn’t let us make any config changes past a certain point because they saw themselves as non genuine even though they are we’ve recently replaced all of our switching, I’ll boot one of them up once I get in and check for you (+IOS version)

        • wallybeavis@lemmy.world
          link
          fedilink
          English
          arrow-up
          2
          ·
          11 months ago

          Do you remember if you could get to a rommon prompt? As long as console access is available you should’ve been able to upload replacement FW. I once had to use kermit or xmodem (I don’t recall) @2400 bps to recover an AP by transferring new FW over the console cable (I’m not sure new APs even have a console port), but switches should be recoverable…the things you do, when you want to go home and not spend another day on site 🤣

          My only caution would be to ensure that you use the correct FW. IIRC -L means Lan Base not IP Services, but it should warn you that there isn’t enough space, if that’s the case