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Need some advice for a network but 2 broadband connections

I am about to set up the following network for testing, and would like some advice on how best to :

First it has 1 cable connection on 4Mbps, using a router, it supply internet and ISP POP3 emails to about 10 workstations, they can use this for the designers to download large artwork and other attachments from FTP servers. this connection has dynamic IP

Also have a second DSL 512/256 with 8 static IPs, which they would like to run an email server with SBS2000, the IP for example is 80.10.20.20 - 27

What would be the best way to make the 2 connections sit on the same LAN ? so PCs can attach to the SBS2000 and collect emails with Outlook/Outlook Express.
The cable router has DHCP on so it will assign IPs in the range of 192.168.0.2 onward,
The DSL modem router will have DHCP off.

Thanks
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robertdims
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robertdims
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Fatal_ExceptionCommented:
I would consider a Dual Wan router.  (You will need a router regardless for your setup to keep your subnets separate...)  Anyway, you could use the Dual Wan to merger your connections, and use filters to direct the traffic...

I have a Xincom that works nicely for me..

http://www.xincom.com/
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Fatal_ExceptionCommented:
BTW:  you could go with a Cisco solution, but we are talking lots of $ by deploying it this way..  :)
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robertdimsAuthor Commented:
Thanks FE
Is there another alternative to Dual WAN router ?
Such as a second LAN card in the SBS2000 that will have a static IP matching the range of the main network ?
Cheers
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Fatal_ExceptionCommented:
Sure.  You could multihome your server..  Should have ocurred to me that this may be the easiest solution, but when I see multiple WAN connections, I just think Dual-Wan..  :)
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robertdimsAuthor Commented:
Thanks FE, I did that and it works fine.

Just a quick question regarding users count on NT4 WKS and 2000WKS, whats the max users it would allow on a single LAN ?  I believe its 10 active coonections but this is with any IP printers or router ?

Thanks for your help again
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Fatal_ExceptionCommented:
Not too sure about NT4.. been a while..  But if you are referring to the max Hosts on a LAN, this is determined by your subnet mask.  The Max connections you can make to an XP Pro or W2K box is 10 though..  That is why if you are going to be needing a Server OS, you need to go with W2K / W2K3 server...

For a classless subnet C mask, you can get 254 hosts, B is around 64,000, etc..  If you use Classless Subnetting, it will be determined by the mask also..  For instance, if you use 255.255.255.240, you can create 16 subnets with 14 hosts each, the first IP Address in the range determines the IP Range (and cannot be used) the the last is the broadcast address...  Like so...

192.168.1.16 (255.255.255.240) is the Range, with the first legal address being 192.168.1.17 to 192.168.1.30 with the broadcast address being 192.168.1.31

Good luck and thanks!

FE
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Fatal_ExceptionCommented:
Hmm  in the first line, I meant Classful, not classless...  :)
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