Hi, On 3850 multigigabit switches (12X48U, 24XS or 24XU), I'm seeing around 20 minutes from reboot to restoration of service, even on stacks. I seem to recall the 24U models run quicker as they have less ASIC resources for programming. This seems fairly consistent. Are you using TFTP/SCP to transfer files? I've found that some transfers go at a glacial speed (at the point where they will time out occasionally); Cisco's recommendation to copy to local flash first improves the situation, but makes this a three step process (copy, reboot, clean).
We upgraded a test/QAT model last week that caused every switch in that layer 2 domain (~30 building distribution stacks) to learn EVERY MAC address on the network, which exceeded the 3750X MAC address table limits... Downgrading the code made the issue disappear. We're still on a 3.7.x engineering release and targeting 16.3.5b for improvements in stacking stability and auto-upgrade features we specifically requested. Cheers, Tristan > On 18 Jan 2018, at 7:59 am, Christina Klam <ck...@ias.edu> wrote: > > All, > > This is the second Cat3850 that I have tried to upgrade to Denali-16.3.5b. > Both take hours to go from expanding the files to finishing. I am on hour > two for the second switch. Except for interface status messages about my > management port (Gig 0/0), there is nothing going over the console. I am > just assuming that the upgrading is indeed happening. When I did the first > switch, it took hours as well, so I will be patient. But I am not happy. > > Fortunately, I have the luxury that these two switches were/are not in > production at the time of their upgrades. However, I will not have the > luxury for the other 3850s. > > What is your experience with upgrading to Denali or Everest? This is beyond > ridiculous. > > Regards, > Christina > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
