different Ip segment in samen netwo

March 25, 2009 at 00:08:10
Specs: Windows XP
I have a small network, with few computers, Ip addresses ..... 9 , Subnetmusk, gateway . I have a ADSL Router with IP address, All my machines and Router are connected to one switch, Till this point I have no problem with Local network and internet. Now I have a new machine to be connected to another network with Ip address and subnetmusk The cat5 cable is connected to this switch from that network. With this I'm properly connected to that network. But How can I see that machine( from other machines of my local network ( 192.168.1.X series) with the same setup? What setup to be done with the router and any other router to be installed on the network to see the machines of different IP segment ? I can't user extra lan card on the new machine !!!
My address (g_partha@hotmail.com

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March 25, 2009 at 06:11:54 is an external IP address. The other IPs are internal to your LAN & are non routable. They all go through your gateway to get to the net.

Is the new IP address a second outside connection from your ISP?

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March 25, 2009 at 21:33:07
No, the computer with address is connected to another network , the Cat5 Cable is connected from that network is pluged to my switch.I want to transfer files from this to myother machine of 192.168.1.X series machines.

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March 26, 2009 at 02:16:18
OK so the 130.xx.xx.xx is a LAN IP that someone (you??) manually set the PC to ???

If so then you either need to reassign each PC on the other network to have IPs in the same subnet as the first network, i.e 192.168.1.x or you need a router to "route" between the networks if you want to keep the 130..xx.xx.xx subnet.

You would need to set up routing tables in that case either statically or using a routing protocol like RIP to allow the router to route between the two..

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March 26, 2009 at 05:25:27 is an external IP address belonging to AT&T. The only way a PC can have that address is if it's connected directly to a modem and there is no router running NAT. If the PC is not dual homed, I don't see how he can connect it to any network. He can't give his home PCs IP addresses on that subnet. It violates all the RFCs.

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March 26, 2009 at 06:43:07
That is what i thought at first which means he must have 2 lines or is mistaken somewhere....

Just out of interest, i thought you could still use "non-private" IPs on a LAN, there be compilations along the way but it is still possible??

Yes this violates the IP addressing standard but as i said yuo can still do it...??

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March 26, 2009 at 08:14:22
There maybe a way to use external addresses internally but why do it if it can cause problems? It's certainly not necessary with all the internal blocks that are available.

It's the same with using .com instead of .local on internal domains. People insist on doing it and then they wonder why they have a DNS problem.

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