Subnets with new router 1

[mkirros]

We have a Win2000 Active Directory network with a single DC and about 35 workstations. The AD server acts as the DNS server, with DHCP done (now) by the DSL modem supplied by our ISP. I want to add a Linksys router between the DSL modem and the network. The modem uses addresses in the 192.168.0.X range, the Linksys uses 192.168.1.X. I have several devices (including the server and some printers) that use (private) static IP addresses in the 192.168.0.X range. My question is, can I leave the existing static addresses as is, or will I need to change them to the 192.168.1.X range? (I know this is probably a fairly basic question, but my training has been mostly on-the-job, and I haven't run into this one yet.) Thanks in advance.

 

[jpm121]

You'll want to have everything on the LAN in the same range of IP addresses (i.e. the same subnet). If you really don't want to change it then change it from a /24 to a /23, then the 192.168.0.x and 192.168.1.x are in the same subnet.

The easiest way to do what you're trying to accomplish is to have your ISP put the DSL modem into bridge mode so that the Linksys actually gets your public IP address and skip the extra 1:1 nat that's taking place in the middle.

Also, be aware that those cheap Linksys routers aren't really designed for offices of your size. With 35 PCs I'd be looking for something more industrial strength. FYI, theoretically the Linksys can support just over 500 open circuits (proxies) but in practice you an expect to start losing connections and having problems well short of that. Just something to be aware of and plan for.

 

[mkirros]

Thanks for the help. Just so you know, I'd love to get a more robust router - we're a non-profit, and I can't always get everything that I really need into the budget.