I have a company that has devices in two different organizations. MX is in one Org and MS and MRs are in another. I need to merge them all into the Org the MX is in. Physically they are already connected. I've brainstormed some thoughts on a good strategy to do this but figured I would ask here to see if anyone has any experience in this.
My thoughts so far:
Keep old network up and add one layer three switch to new Org. This would allow be to manually duplicate all L3 rules, DHCP, VLANs and everything that will need created. After that I would just move the switches over one at a time and reconfigure the ports from screenshots previously taken while in original Org. My road block to this path. If I don't get them all moved over at once then will this mess things up having L3 rules in two different locations? Would I need to move everything during a single outage window.
The MR devices I think will be simple. Move over one MR long enough to recreate SSIDs and then just move all MR devices over while renaming them.
Our company recently did something kind of similar for a client. I would definitely recommend using the APIs for this kind of project if you know how because there is a risk of messing up settings if you don't do everything at once. Plus you can definitely automate this. Here's a post I did on it too: