My company is currently working on splitting our Head Office network into separate VLan's based on floors in the building. There are a number of reasons behind the need to do this, ie. reduce broadcast traffic on the LAN, allow proper failover on our core switches, tighten security by reducing network access. There are networking guys involved in this so I'm not expecting a full networking plan or anything on how to do it.
I just have afew questions regarding how this change will effect our setup.
1. DHCP - we currently have one DHCP range giving out IP's to the entire subnet (255.255.255.0), with the new VLAN's we will need 4 DHCP ranges (one per VLAN) and users will receive IP's based on which router (depending on level) they connect through..
I figure i can just created the 4 different ranges and users will receive the IP to suit the router they connected on(floor).
Any holes in my understanding here or that sounds correct?
2. Reserved IP's - only one VLAN/floor will have a Dynamic range all other machines will have reserved addresses. So if a user from Level 2 plugs their laptop into Level 3 (no dynamic range) they won't receive an IP as they aren't assigned a reserved IP address from that range/VLAN.
Again is my thinking here correct?
If so is there a way around this? We would like a user to be able to move around the building and still access their normal resources (as they currently can) yet we need the VLAN's implemented.
Complicated questions but I'm just looking for some suggestions/comments as we are getting contractors in to help out, i just want to be prepared abit beforehand. We use AD DHCP and currently have just the one range assigning reserved and dynamic IP's to anyone no matter their location in the building.