Subnet masks — which should I use to solve this problem?
I have a office. which has 3 department and each department have 6 PC . I want to subnet the hosts that each department can communicate with there people but the cannot communicate with other departments people. In that case which SUBNET MASK i can use to solve the problem. Please solve my problem.
Software/Hardware used:
Windows XP Prof.
Software/Hardware used:
Windows XP Prof.
ASKED:
December 23, 2009 10:02 AM
UPDATED:
December 30, 2009 6:27 PM
Answer Wiki:
You can have any type of subnet you want. The minimum for 6 machines would be a /28 subnet.
A basic plan would be:
192.168.1.1/24 - Department 1
192.168.2.1/24 - Department 2
192.168.3.1/24 - Department 3
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Using /28 subnets provides for exactly six hosts. No chance of adding an additional host if needed. Technically, it’s possible, but I’d never advise it. That would mean going to /27 just in case.
A requirement for three subnets means that two bits are required to keep them separate. Two bits actually allows the possibility of four subnets — 00, 01, 10 and 11 — so there’s an additional subnet left available if needed. That means dropping to /25 instead of /27.
However:
A basic plan would be:
192.168.1.1/24 – Department 1
192.168.1.2/24 – Department 2
192.168.1.3/24 – Department 3
As near as I can tell, those all fall in the same single subnet — 192.168.1.0/24.
Tom
Tom, you caught my mistake.
What I mean was
192.168.1.1/24
192.168.2.1/24
192.168.3.1/24
Thanks for the update
you can do vlans with a switch and not provid routing betweent he vlans.