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Stray Dog Joined: 26 Jul 2002 Posts: 55

I wanted to know if anyone could give me a definitive answer on whether or not I can have a computer configured on the same network as my main network. For example, can I configure a computer on one end of a T1 on the 209.204.109.0 network which is on the other end of the T1? I believe I can, but am not willing to look it up. Thanks in advance for any responses.

Posted: Wed Jun 04, 2003 12:39 am Post subject:

sure, if you netmask well enough. Say you have a network 192.168.1.0 and you netmask it with 255.255.255.192, or /26. This gives you 4 class C subnets (for the sake of argument). A router exists to route traffic between networks (or subnets), so in this case you'd have 62 hosts in a subnet on one side of the network, and your router would be one of them, say 192.168.1.1 which then would have a forward to, say, 192.168.1.64 (the network on the other side of the T1) were you have another router doing the opposite. And hosts on that side use the address range 192.168.1.65 to 126.

Or instead of routing, use bridging instead, everyone shares the same address space, downside is all broadcasts go over the T1 so you waste some bandwidth, but then it's not a WAN it's a LAN.

So your choices are break your network into subnets and set up routing, or use bridging. If it was one PC in a remote office with a T1 I'd probably be lazy and do bridging, if it's a whole remote office and they've got a server then I'd break the network into subnets and do routing.

Stray Dog Joined: 26 Jul 2002 Posts: 55

Thank you. I will be using routing.