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Windows 7: 2 PC's crossover ethernet cable problem

29 Jun 2011   #1
Boyntonstu

win 7 hp 64 bit
 
 
2 PC's crossover ethernet cable problem

I have 2 PC's close together on a table.

They are hard connected via a cross wired ethernet cable.

Until recently, I always saw both PC's and I was able to transfer files and share a printer.

Now I can only see my PC on the Network.

I tried self diagnosis and it indicates "no valid IP address".

Can you help?


My System SpecsSystem Spec
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29 Jun 2011   #2
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

How are the PCs getting their ip address? Do you have a router doing it dynamically or you have manually set the ip's? Try setting ip manually.
My System SpecsSystem Spec
29 Jun 2011   #3
Boyntonstu

win 7 hp 64 bit
 
 

Quote   Quote: Originally Posted by Bill2 View Post
How are the PCs getting their ip address? Do you have a router doing it dynamically or you have manually set the ip's? Try setting ip manually.
Why is the router involved in the hard wired connection?

How do I set up the LAN ip address manually?

BTW Both PC's connect to the internet via a router OK.
My System SpecsSystem Spec
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29 Jun 2011   #4
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Router can be wired or wireless. If you know the router's IP (internal ip, not the external one), click on Network and Sharing center in the Control Panel, then in the left pane click on Change adapter settings, double click the wired connection icon, then click ipv4 in the list. Check "use the following ip address" and fill in the details.

The ip address must be in the router's range so if the router is 192.168.1.1 then the ip needs to be set to 192.168.1.x where x can be 2-254. The subnet mask will be entered automatically and the default gateway will be the router's ip. The primary dns can also be the router's ip, the secondary can be left blank. Save the settings. You should also disable DHCP on the router to stop it from assigning ip's dynamically.

If you dont know the router's ip, go to command prompt and type ipconfig /all. Check the ip under Ethernet adapter LAN entry.
My System SpecsSystem Spec
29 Jun 2011   #5
alphanumeric

Windows 10 Education 64 bit
 
 

If they are both connected to a Router, why do you also have them linked with a crossover cable? You don't need both connections to share files etc.
My System SpecsSystem Spec
29 Jun 2011   #6
Boyntonstu

win 7 hp 64 bit
 
 

Quote   Quote: Originally Posted by alphanumeric View Post
If they are both connected to a Router, why do you also have them linked with a crossover cable? You don't need both connections to share files etc.

We are using a local WIFI ISP with a MAC addressed router.

Prior to the crossover cable, we needed the 'open' router for the PC's to link.

We felt that a crossover would be a more robust connection.

(Sometimes, we would be on different routers)
My System SpecsSystem Spec
29 Jun 2011   #7
alphanumeric

Windows 10 Education 64 bit
 
 

OK, so you don't have your own router in house. So how did you setup the cross over cable in the first place? I don't believe thats plug and play, as Bill2 said you usually have to set each PC's NIC up with static IP's etc.
My System SpecsSystem Spec
29 Jun 2011   #8
Boyntonstu

win 7 hp 64 bit
 
 

Quote   Quote: Originally Posted by alphanumeric View Post
OK, so you don't have your own router in house. So how did you setup the cross over cable in the first place? I don't believe thats plug and play, as Bill2 said you usually have to set each PC's NIC up with static IP's etc.
Thanks guys for your help.

First, and I do not know why, the LAN is now working fine.

I have a Linksys G house router LAN wired to another router in my attic that is LAN hard wired to an external antenna repeater aimed at a tower about 1/2 mile away.

For about $175 a year, our homeowner community may choose the tower (Epic Communications) as our ISP.

I have 2 ways to connect the 2 PC's:

If both PC's are using the Linksys router, they can see each other.
The crossover cable is method #2.


Why keep the Linksys? It's location is closer to my PC's and it has a stronger signal.

I have no idea how to set the LAN address.

Somehow the Win7 brains figured it out.

Even though it is working, I still feel ignorant.
My System SpecsSystem Spec
30 Jun 2011   #9
alphanumeric

Windows 10 Education 64 bit
 
 

I'm not a networking expert by any means but I'm thinking if you didn't do any custom setup for the network cards connected to the cross over cable, it isn't doing anything and you may as well remove it. If you want to confirm if it works or not disable your wireless cards in each PC and see if you can still share files etc. I don't think you will be able too. I'll understand if you don't want to mes with it though, now that its working.
My System SpecsSystem Spec
30 Jun 2011   #10
Zepher

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by alphanumeric View Post
I'm not a networking expert by any means but I'm thinking if you didn't do any custom setup for the network cards connected to the cross over cable, it isn't doing anything and you may as well remove it. If you want to confirm if it works or not disable your wireless cards in each PC and see if you can still share files etc. I don't think you will be able too. I'll understand if you don't want to mes with it though, now that its working.
Quick way to test it would be to copy a large file and see how fast it is transferring at.
My System SpecsSystem Spec
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