Network Structure (topology - managed switches)
Posted on 2006-03-23
I have a network with 24 computers. All these computers are connected to a 24 Port switch (not L3). I have recently had a need to add another two computers to the network. My switch is full.
In addition I would like to subnet the current network into three subnets: 1 for staff, 1 for students, 1 for domain controller.
I have a need for certain staff to be able to cross over from one subnet to the other. In other words I want to be able to totally isolate staff from students but enable some staff to cross into student network. both these networks should be able to cross into third network for internet access and authentication by a domain controller.
I was going to buy a L3 Managed switch with maybe 8 ports, plug three hubs or switches (not L3's) one for each subnet into the managed switch and connect all the computers into the appropriate hub/switch.
I have since been advised that this will not work and that I need one managed switch with enough ports for every computer.
Can somebody confirm this advice or comment on the scenario I was planning. Hope diagram below will help, this is what I was planning.
MS = L3 Managed Switch
DC = Domain Controller
(Switch 24 Port)
|Student Subnet| 192.168.7.0
/ (Switch 8 Port)
|MS| ----->|ADSL Modem & DC| 192.168.0.0
\ (Switch 8 Port)
|Staff Subnet| 192.168.8.0
1. All computers must be able to cross in to 192.168.0.0 for domain authentication and Internet Access
2. Students cannot cross into staff subnet
3. Selected staff can cross into student subnet for remote monitoring of activities and marking student work