We have almost 20 Cybex “chassis,” rack-mounted enclosures that can contain a variety of cards that do things like connect to a computer, provide a user station, or network to another chassis. Since yesterday morning, almost none of the interconnectivity has been working. That’s what I’ve been working on nigh-exclusively since I arrived, then.
I just made some progress. I’ve isolated the problem.
It’s not Chassis 5, and it’s not Chassis 7/16 (a split chassis, thus with two identification numbers). It’s either Chassis 2 or Chassis 1 (which only connects to the rest of the network via #2).
Here’s how I got this far: I discovered that I could make a particular combination of inserted cards come up “green” on Chassis 5 (our main “routing hub” chassis), and that the trick to doing so was to leave out any card that connected in even a roundabout way to Chassis 7/16 (a secondary “routing hub” chassis). “Great, it must be in 7/16,” I thought.
In trying to reproduce this success on 7/16, I discovered that the only way to get reliable results was to leave out the card that connects the 7-side of that 4080 to Chassis 2. So I pulled the two cards in #2 that talk to the rest of the system, and reinserted all of the non-Enco cards in both 7/16 and 5. Voila! I can reliably pull up machines across all of the Server-room side of the Cybex network, and my XPRB (basically my “console unit” card) can display inventory for any connected chassis. At this point we have a mostly-usable system for the first time in a couple of days.
So now it’s just Chassis 1 and 2 that are isolated, and I need to figure out how to proceed from here… since isolating the problem doesn’t explain the problem itself.
Hoo boy. At least I can say I did something valuable with my time today, eh?