Restrcting guest n/w(liberary Dept)

We have extended our Guest n/w(plain n/w) from main office to library office. Our requirement is that “restrict the access from other guest users to liberary guest users and liberary users need the internet access”  “ and the guest n/w reaching upto the liberary office and I ‘m able to communicate with servers getting internet access. But  restricting the users from liberary n/w not happening.
The connection is we have one10mb mpls connection  connected to the router+dhcp Server+4506 Coreswitch and edge switch.
Network is
Default gateway (router IP)
Liberary n/w to (scope created in dhcp and its registered for liberary office)
Attaching the router+ 4506  coreswitch configuration. Please help me how to solve this issue.

Who is Participating?
Davis McCarnOwnerCommented:
The answer is really very simple; buy another router and plug it's WAN/Internet jack into the local network.  Users connecting to it will only be able to tunnel through to the internet and won't have access to the LAN.
Something like this:
I'm confused by the question.
Please clarify.

It appears there are 2 sites: Main & Library

Several networks: Guest Users, Library Guest Users, Library Users, Library Office

"Network is"
Which one?

Is everything on 1 subnet?

A diagram would be helpful.
QlemoBatchelor, Developer and EE Topic AdvisorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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