Also provide the Default Gateway address as 192.168.1.1 on both the systems. It will work fine. Also remember to disable the firewall.
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how to connect Laptop and Desktop using crossover cable
Hi,
I have a Laptop (given by my company and is joined to my company domain) running Windows XP Professional with SP3. And I have my desktop which is running Windows 2000 Professinal with SP4 and Windows 2003 server with SP2 (dual booting). It is in the default workgroup named WORKGROUP. I wanted to connect these two machines (laptop and desktop) using the crossover cable to practice certain features of SQL Server 2005 which require two physical machines. I have given the following IPs.
Laptop: 192.168.1.1 and 255.255.255.0
Desktop: 192.168.1.2 and 255.255.255.0
But when I connect the cable to both the machines, it is showing Network cable unplugged on both the machines. The crossover cable was tested with a machine when it was bought.
Can someone please let me know what I need to do to connect my two machines?
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Answers
Thanks for the replies. Side A looks same. Side B on my cable looks like:
1. Green-white
2. Green
3. Orange-white
4. Blue
5. Blue-white
6. Orange
7. Brown-white
8. Brown
Is this not the cross cable configuration? I have bought two crossover cables from two different computer shops (they prepared it and gave it to me). Two are similar with the color coding I have mentioned. Both are not working. Please confirm if this coding is not correct and the coding you have given is perfect, I will ask them to crimp it again with the coding you have given.
FYI, I have also disable the firewall and I will try with the default gateway.
Just now I checked in the few of the sites to check the crosscable color coding. The crosscable(s) which I have now are with the correct coding as per those sites. Here is one of those sites: http://www.incentre.net/co
I have connected both my machines with straight cable and the LAN icon in the System Tray is showing Connected and I can access the shared folders from one of the machines depending on the end they are connected.
I am a layman in the field of networks cables. Please provide me some pointers.
Srinivas_Vengala,
I'm not sure what the previous diagram is... it's not a standard crossover... what you have described IS a standard 10/100Mb crossover (gigabit may be different, but 2 stripes and 2 solids are not supposed to be next to each other in any case). Cisco used to employ a non-standard PoE, but I don't think even that is it.
Attached is a diagram with a 568A straight through on the left, and a crossover on the right.
To make a 10/100Mb crossover you wire it 568A on one end and 568B on the other end (essentially, the green and orange pairs are swapped in the 2 different wiring specs... the other 2 pair - blue and brown - stay in the same positions). So the 568B layout is on the far-right in the attached image.
If you usually connect to your company LAN wirelessly, go into your laptop's BIOS setups and see if the ethernet controller is enabled.
- 568A-Crossover.gif
- 8 KB
568A on the left; crossover on the right.
> I have connected both my machines with straight cable and the LAN icon
> in the System Tray is showing Connected and I can access the shared
> folders from one of the machines depending on the end they are connected.
That is odd. You are saying if you turn the cable around end for end, it changes which computer can access the shared folders on the other computer?
Both the diagrams are correct.
The only pins that need to be crossed for your scenario are pins 1,3 and 2,6
Since the cables are fine and you are able to connect using a standard patch cable, the problem is most likely in your network card settings.
Check the network card properties for an option that allows you to set the cable type and select crossover. That is the only suggestion that makes sense given what you have stated above.
>Check the network card properties for an option that allows you to set the cable type and select >crossover. That is the only suggestion that makes sense given what you have stated above
Hi Rohit,
Thank you for your reply. I am unable to find an option that allows me to set the cable type. Can you please tell me where exactly we can find this option generally?
I have given the default gateway as 192.168.1.1 which is my Laptop's IP. Now I am able to access the shared folders on my desktop. But not shared folders from laptop on the desktop. When I try to access the shares on the laptop from desktop, I am getting the attached error.
One more question, if everything works fine... only file sharing is possible using peer-to-peer (by crossover cable) or can I access the other machine as it is connected through a LAN using hub/switch? Because I want to access the SQL Server installed on the desktop from the laptop. Is it possible using the crossover cable connection?
- ConnectError.jpg
- 156 KB
Error when trying to access shared folders on the laptop from desktop
Hi All,
I just checked again. It is working without the gateway also. But, I can access the shared folders on my desktop from my laptop but not in the reverse way.
Darr247: Just FYI., when the cable ends are changed, the PING to the name of the machine is successful depending on the end. But, in both the cases, I am able to access the shared folders from on my desktop from my laptop.
you can only use a straight through cable to connect two machines that have 1gig LAN.
If you cant access shared files it is a permission problem.This is either that the user does not have permission because it can not be recognised (maybe a firewall is blocking the service, look at advanced firewall settingsand then exceptions, this shows ports tcp 139,445 ,udp 137,138) or you have not set the permissions correctly.
HI All,
Leave all this.. I just want to know if crossover cable between two machine is working fine and I can see each machine from the other, can I access an application/server (like SQL Server) installed on my desktop from my laptop or I can just access the shared folders from the other machine? Please respond to this first. If I can access only shared files, I can stop my experiments as my intention is not to copy/move the files between the systems but to access the SQL Server.
When they're networked, and the laptop uses MDAC to send a query on port 1433, I believe the SQL server should respond, yes. If it doesn't, try it without the firewalls enabled on both machines.
Check these articles
http://support.microsoft.c
http://support.microsoft.c
As my Laptop is my company's domain, whenever I try to access my laptop from desktop (using a local account), it is trying to connect to a logon server (may be the domain controller) which is not available when I am not connected to my company's domain. Hence, it is giving error when connecting to my laptop from desktop.
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by: RohitBagchiPosted on 2008-12-27 at 04:00:58ID: 23248050
Are you sure its a CROSSOVER cable and not a PATCH cable?
That sounds like the most likely cause. Check the attached screenshot to verify the cable pinouts.
If you are certain it is, post back.
Crossover cable pinout