I'm looking for suggestions on breaking up a flat network. My current infrastructure is as follows:
150 Server IPs (approx)
75 Appliance IPs (switches/router/fw/printers)
240 Workstation IPs (90% dhcp)
As you can tell above this doesn't leave us with many available addresses and my group is preparing for additional growth that may use up the rest of the available IPs.
We have 5 network closets that terminate back to our core switch via fiber and gigabit is run to all server and workstations. There are up to 5 departments that terminate in each closet. All switches are VLAN capable, however, only the default is being used. Department will need to communication with one another.
I'd like to keep my servers on the existing subnet if possible, unfortunetly there are several applications (documented and undocumented) that point back to an ip address.
Also, i'd like to implement a separate vlan/subnet for Out of Band management.
-Configure each department with its own subnet
Thank you for your help!