My company is doing virtual office business.
We have 5 office room for renting to clients.

Anyone can give me advise for the network?

Some basic requirement as follow:
1. All Rooms is seperate by defualt, they cannot talk to each other.
2. If the client rent for more than a room, the two rooms should be
talked and connected in LAN.
3. There is a public area with Wi-Fi connections.

Thanks for any advise.

I'm assuming that clients wil use their  own computers, you're only providing
the wiring.

You can achieve the wired part with a managed hub, most of which will allow
you to separate the LAN into segments.

Wireless is a bit more of an issue; AFAICS it can only connect to one
office, or all.

If Internet access is required, that would have to be provided via a router
which allows LAN port isolation.

I'm thnking you might want to as a Cisco guru about this kind of thing; it's
their field.

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