Page 2 - Buisness LAN setup `need direction`

Im confused on number of clients? you allocated storage for 6500 and specify 350 workstations. if 6500 clients and 8 departments and you subnet for each department that would be 812 Ip addresses you would need for each not including printers and other network peripherals so a class C is out of the question. Also you are trying to use a public address in your internal network which is a big mistake. Outside interfaces of your router and inside , outside address of PIX, Global addresses on PIX and static NAT to webservers and mail server will need Public addresses. your web servers should have private addresses applied with PIX NAT'ing to them with acl applied for only port 80 and 21 if desired. your PIX 535 will have 3 interfaces one is the outside interface with public IP address going to the internet router the inside interface will be private IP address going to your core switch and the DMZ interface will be private IP address to small switch with web servers attached and mail server if you want. all devices inside network will be private also on different network than the DMZ. your DHCP server will be put on the core switch pushing DHCP to all subnetworks (VLANS) using IP-Helper so you can administrate all VLAN dhcp from one server. If you have WAN links connecting sites I would put a DHCP server at the remote site. BIG thing here is to use a private IP scheme inside the network ie 10.0.0.0/8, 172.16.0.0/16, 192.168.0.0/24 you dont have to use class full scheme this is the real world of VLSM which save greatly on IP addresses. The domain IP is not what you use internaly it is the IP address applied to domain.com you need to break that down for "A" record, MX record and all public access devices thats it! everything internal will be NAT/PAT to private addresses.

Okay, i understood what you told me. But i am going to clarify something.
First, the storage for 6500 clients is on the webserver, each client taking up 100MB webspace.
The subnet i tried to do was for the internal network +DMZ zone+ Router that uplinks to the Internet. But after some research, i found that i was wrong.( which you pointed out too) .
So, now i understood that the given IP address is for the Domain (webserver) only and everything behind PIX ( as it has NAT feature in it) i will be assigning Class C address range. ANd there will be 8 subnets and the whole internal LAN will have 350 workstations in total and not individual (per subnet).
And hey, thanx for replying!!!

Personaly I would do a address scheme like this...

10.0.0.0/16 is networks so you would have 10.1.0.0, 10.2.0.0, 10.3.0.0, etc

then I would make all routers and switches use .1.0 example 10.1.1.1, 10.1.1.2, 10.1.1.3

all servers would be .2.0 so server1 would be 10.1.2.1 then server2 would be 10.1.2.2 and so on

printers would be 10.1.3.1 and so on

PCs would be 10.1.4.1 and so on

I passed this course with a B+(the highest grade the teacher assigns..) and also got an A for the project, 8.5/10 as he reduced mark for the format and executive summary. Remark on the project "Creative presentation".
Also, i got a co-op job when i showed the project to my (current)Boss and explained in detail what i did for the project! Wooo hoooo!

Thank u juniperr! I owe ya !

CONGRATS!!!!!!!

your very welcome, Im glad you stopped back by to say HI! and give us an update.

Nice work! Glad we could help.

Chris