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braunp

Sub nets Win2kPro

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I have two subnets like this:1a-1b-1c | 2a........The only thing visible from 2a is 1b. I want to see all of subnet 1 from subnet 2.I think the resriction is a Win2kPro one; that is - I think Microsoft would say I need the Server edition. Suggestions please.Thanks,Peter

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Guest ThunderRiver

braunp, I still not sure what you meant by subnets nor what you are really trying to do. Are you trying to set up a router, so you can have your own LAN or something? I am quite abit confused by subnets 1a, 1b, 1c..Thunder

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That makes 2 of us...Please give us a bit more to go on... such as the IP range and the Subnet Masks used... also what hardware are you using to separate these subnets... because the only way that you can go between subnets is through a router (or layer 3 switch)Thanks...

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I think I understand what you're asking up until you say ...

The only thing visible from 2a is 1b. I want to see all of subnet 1 from subnet 2.
Because I don't see how such different subnets would be visible to each other at all.This question is probably better off placed in the Networking forum in any case. But I'll wait to see if you come back and add more info -- use real subnet IP addresses, please -- before I move it.-- Scot

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Thank you, gentlemen! - sorry that I have been inattentive (work takes time).OK. I have 3 PC's in subnet 1. They have adresses of 192.168.0.xxx and are connected to a WAN through 192.168.0.1 which has two NIC's Subnet 2 (4 PC's) uses 192.168.10.xxx and one PC connects with (say,) 192.168.0.5 in subnet 1, which also has two NIC's. Why? it's a geographic thing.All the computers in subnet 2 can see 192.168.0.5. I want to be able to see the other PC's in subnet 1.Sorry it was not clear in my first postRegards,peter

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This is really confusing. Please tell us what subnet mask you are using as that will help us determine if you have properly subnetted the network. Also, can you give us specific details of the 2 network topologies? How do the machines in subnet 1 see each other, switch or hub. The PC in subnet 1 with the two NICs, where does that sit in relation to the two networks as well as the one in subnet 2 (192.168.0.5)? What are the IP addresses assigned to the two computers with 2 NICs? How is the WAN link established? Point-to-Point? Internet? Are 192.168.0.5 and 192.168.0.1 both on the same switch or hub?

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The mask for both nets is 255.255.0.0The subnet with addresses in the range 192.168.0.x, have addresses 192.168.0.1, 192.168.0.2, 192.168.0.5. They are on thin ethernet (BNC). This is subnet 1 and all the machines see each other.The WAN connection is on a second NIC on 192.168.0.1. The address of this NIC is provided by the WAN The machine with 192.168.0.5 has a second NIC ( its address is 192.168.10.4) which goes to a dumb hub connection to which is common to the machines on subnet 2. This is subnet 2 and all its machines see each other, and see 192.168.0.5.RegardsPeter

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The mask for both nets is 255.255.0.0
Okay,There's part of your problem. The 192.168.x.x network address is considered a Class C IP network with a default subnet mask of 255.255.255.0 and even if you try to apply 255.255.0.0, with the addresses you've used, the x.x.0.x and x.x.10.x networks may exhibit some strange behaviour. Having said that, 255.255.255.0 isn't enough because you still have two separate networks that can't talk to each other. In order for the two networks to see each other you will have to correctly assign the default gateway for each machine in both networks. You may also have to add a route in the routing table of each machine for reaching other networks, for instance if you want them to reach past the WAN. Below I will summarize what the correct settings for each machine should be:LAN 1 (10Base2 thin coax)host #1 - NIC 1: 192.168.0.1/255.255.255.0 default gateway: 192.168.0.5 NIC 2: WANhost #2 - 192.168.0.2/255.255.255.0 default gateway: 192.168.0.5host #3 - NIC 1: 192.168.0.5/255.255.255.0 default gateway: none specified NIC 2: 192.168.10.4/255.255.255.0 default gateway: none specifiedLAN 2 (10BaseT hub)host #4 192.168.10.1/255.255.255.0 default gateway: 192.168.10.4host #5 192.168.10.2/255.255.255.0 default gateway: 192.168.10.4host #6 192.168.10.3/255.255.255.0 default gateway: 192.168.10.4host #7 192.168.10.5/255.255.255.0 default gateway: 192.168.10.4If host #3 is the Windows 2000 Professional machine then you will have to enable IP routing because its disabled by default.Add this registry key and set its value to 1, then reboot.HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip \Parameters

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No problem.But my registry information came up short. That's the key that needs to be added if its not there, but it should be. What needs to be added if it isn't there is the IPEnableRouter entry and that needs to be set to 1. This link here should demonstrate clearly.

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Peachy...You're explanation was excellent... and actually by using the 255.255.0.0 subnet mask he was supernetting that address range and forcing them to be on the same subnet of 192.168.x.x which would like you said give some strange results...heh, I did not think that there were people still using thin-net... :) especially since they can only run at a much slower speeds...--

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Thanks again Peachy. I did understand that the IP routing registry entry in your original post was short of the full quid ( don't worry, an australian expression) but you had given me enough to work out the rest.Regards,

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