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You have a lot of options here. One of the assumptions baked into IPv6 is that everything is probably going to have several IP addresses. At the outset you have the link-local addresses (the fe80:: addresses), as well as whatever address you're assigned. That's two. The documentation makes clear that cases where an interface will have a link-local, a ...


You have a routing problem. Consider this: your RPI (192.168.0.x) does know nothing about the existence of another LAN (192.168.1.x). How can you inform it that another LAN exists right next to it? Answer: by using a route, which is a very specific piece of information stating how a particular subnet/host can be reached. In your example, your LAN ...


You might consider using routers instead of switches. If the campus is a big one, and there are a lot (lets say 1000+) clients, it does make sense to go for a routed network instead of a big and bloated tree structure. Also, if you do not have enough experience, a Cisco Catalyst will be overkill for you.


A network design could look like this. Each building switch double attached (using fiber uplinks) to a failover backbone router at the Center Building. Default backbone route would be a Firewall.

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