help me in desgin network

hello for all i have network this subnet gave me by policy but i need make vlans for decrease broadcast domain
so i have switch core 3508 xl with 8 port geebek  i want replace swich by 3750 or 4600 seies
this have sfp module not gebek
this all network conected by bransh by cisco router 2911 gatway for all user  know requird to access to internet by other router
i need help on replace cisco switch without new termintion
2- i need make 5 vlan
3- user accss to internet and same time access to bransh
example configration in same senaro
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koudryConnect With a Mentor Commented:
I may not have understood your question correctly, so below are some suggestions:

You can use Cisco 3560-X for your access layer. You can have two of those and connect them one to the other to form a cloud to which your CPE routers can connect. Within that cloud, you can let the routers talk to each other. You may need to add static routes depending on how you break up your master LAN.

Since you have a big master LAN subnet of, you can break this down into smaller subnets depending on how many hosts you need. The following tools can help you with that:

Your access layer switches can connect to an aggregation / PoP or distribution cloud.  For example, you can have two devices running in parallel - this obviously depends on the size of your network. Sometimes the aggregator can be a switch like the 3750 or 3750-X or you can use routers as well. Whatever platform type you use for the aggregator, that will connect you to the core and the core to the Internet.

I think you need to start drawing a digram of how you want your network to look like. The documents below may provide some ideas.
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