@bnewall wrote:
@olino wrote:
The best course of action, then, is the backup the existng controller, restore it to the new controller (before you actually plug it into the network so you dont have an address conflict), add the new licenses and the reload. Once it comes back up, you can disconnect the existing controller from the network, clear the ARP cache one the L3 devices around the controller, change the IP on the existing controller, update the config on the new master so that the LMS-IP points to the new IP for the local controller, and then make the existing controller a local off the of new master.
It will require a little down-time, but it should be minimal if you plan it out well.
Thanks! I'm not concerned about some downtime. If I do this later in the day, it won't affect anyone anyway. :)
Hi all,
Thanks for all of your advice and input! The new controller arrived yesterday morning and was installed yesterday afternoon. It went fairly smoothly, but I did encounter a couple of small "gotchas", which I'll bring up in case it helps anyone else.
I'm not certain, but I might have reversed the order of loading the licenses and then restoring the flash backup from the original controller. But whatever I did, the end result is that after the new master came up, I didn't discover this right away, but it had NO licenses at all. I suspect that I put on the new licenses, then restored the flash, which tried to put the old licenses on from the other controller, but those licenses were invalidated by the fact that the new controller has a different serial number.
I also ran into an interesting problem where my enable secret password somehow didn't make it over. When I restored the configuration file, it was in the config, but then later, after a reboot, I couldn't enable from SSH anymore. I had to restore the config file again, which then required me to re-make some of the config changes I had done before (such as changing a couple of LMS IPs).
Once that was done, it was at THAT point when I saw that the new controller had no licenses, which is why my two laptops could connect but couldn't get IP addresses. The firewall rules weren't there, because there was no firewall license. So, I had to apply the licenses, reboot the controller again, THEN restore my backed up configuration AGAIN, then make the same LMS changes AGAIN... :) But after doing all that, everything was up and running.
Thanks for all of your help!