Hey folks! I'm sorry that anyone has experienced issues with NAT detection - while it works well overall, we agree that it's not meeting our expectations so we're making arrangements to turn it off until we can tune it to be helpful without causing issues. Thank you for the feedback and patience! ... View more

Hey @Slobs2, I’m sorry to hear we’ve missed the mark for you on this. It was a tough decision but know that contrary to your experience, we’ve had a lot of customers that have had problems when they try to split stacks into separate upgrades. That being said, we also hear that being able to upgrade stacks without interruption would bring a lot of value for customers like yourself so we’ll investigate to see what is feasible.  ... View more

Gotcha! Sorry you ran into an upgrade issue, it’s frustrating when that happens. On the bright side, that’s not an issue with the staged upgrades feature  😁 ... View more

Hey @cmr, I want to make sure I understand correctly - were you able to split switches that are part of the same stack into separate upgrade groups, or were all of the switches of that stack in the same upgrade group and the issue occurred after attempting to upgrade that stack? ... View more

Hi @GIdenJoe  – the physical and flexible stacking logics are the same with regards to firmware upgrades. We’ve tested staggered upgrades on MS425s in the past and they are not hitless. For that reason, staged upgrades across members of stacks aren’t supported.   Convergence of hardware forwarding information should occur within 30 seconds of a failure or in this case a reboot for upgrade, however, this period could be longer depending on the nature of the failure, the definition of full convergence, and the protocols involved. For instance, if it’s the active switch in the stack that fails, protocols such as OSPF will have to re-establish adjacencies and synchronize the database. ... View more

Hey @cmr , I know right? Being able to keep a stack online during an upgrade (kinda like ISSU) is a super cool feature to have. Unfortunately, ISSU isn’t what’s actually happening there and we actually never supported splitting stacks into separate upgrade stages. In fact, doing that has caused problems where new and previous firmware images are mixed in a stack, resulting in forwarding and stability impacts that were not so awesome. Sorry to kill the mood there, we elected to play it safe on this one. That being said, something like ISSU is definitely something we’d like to look at properly implementing in the future so I’ll put a vote in the bucket on that item.    Thanks for the feedback. ... View more

Ok, cool. Thanks again for the feedback, and we’ll look into this! ... View more

Hey Blake! We’re definitely giving some thought to ways to search and quickly find switches to add to a group, so I’m glad to hear this came to mind for you too. We have a few ideas in mind to keep making staged upgrades even better, but wanted to get it out to you as quickly as possible because there’s nothing better than feedback from live networks.  I’m curious, how many switches are you dealing with in the network where you’d like to be able to search for switches to add to upgrade groups? ... View more