unidentified network


I have two pc in which they cannot get access to our domain network. both running Windows 7 and one PC is new. I tested the port and it works fine and so does the switch. Anyone shed any light on this one?
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Are they able to ping each other?  If you've established basic connectivity, then make sure DNS is pointed at the right DNS server hosting Active Directory.

Perhaps a little more info?

Are you refering to a wireless network here?  Or a wired network?

Are you running AD?  

It sounds like maybe you have a closed port on the PC or possibly a service turned off.   Did you try the wizard?  Or are you attempting to connect via manual connection?  Please describe how you are setting up.
kwok76_ukAuthor Commented:
sorry i wasn't clear...

the pc's are using the same port (wall) in the office..i tried one with the old PC and also tried with a new pc and same problem appear.
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Steven CarnahanNetwork ManagerCommented:
From a Windows Support engineer over at Answers.Microsoft.com:

To troubleshoot your issue you may try the below methods one by one.
Method 1: Update the network driver.

Steps to update network driver:

1.    Click on start button.
2.    In the search box type devmgmt.msc and then press enter.
3.    Select the network card device and right click on it
4.    Now select properties.
5.    In the properties window, under Driver tab, click on Update Driver button.
6.    After the installing the updates restart the computer.

For more information visit: http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly 

Method 2: Try resetting the TCP/IP stack.
To reset the TCP/IP stack go to this article and either click on "Fix it for me" or follow the instructions to fix it yourself: http://support.microsoft.com/kb/299357 .

If still the same problem persists then try the next method.

Method 3: Here you need to troubleshoot using the Network troubleshooter in Windows 7 and check for the issue to do that follow the below provided link.



kwok76_ukAuthor Commented:
wired network using the same port number
kwok76_ukAuthor Commented:
I basically plugged the network cable into the pc and into the port in the wall and it does not work for the new pc and also the old pc.
I'm not sure when you say wizard?
If i plug the cable to another port then it works fine.
Steven CarnahanNetwork ManagerCommented:
1. Are you sure the wall port is connected at the other end? (to a switch in the communication room)
2. If so could the switchport be shut down?
Fred MarshallPrincipalCommented:
2 computers.  2 ethernet ports in the wall.
Neither computer works in one of the 2 ports in the wall.
One of the computers works in the "other port".
Do both computers work in the "other port"?  I didn't see this information.

I agree that it may well be that one of those ports is simply not connected.  Depending on the building and the switch, it's not uncommon to have flexibility but not 100% connectivity.  That is, perhaps the idea was to have one live port between the 2 in that location and to select which one it would be active (due to a limited number of switch ports).  It's fairly easy to check for whether a port is "live".  The fact that one computer works on one port and not on the other is already a fairly good test ... for most networks.

Assuming it's allowed by the organization, you could plug in a little 5-port switch into the wall port and then plug both computers into it.    In fact, perhaps that would be a good test as well!

kwok76_ukAuthor Commented:
It looks like its the HP procurve switch we have is causing the problem. After a few test it looks like one of the ports on the switch in the comms room is not working properly. At first i thought it was the port on the wall was causing the problem or even the pc. Both PC doesn't work on the same port on the wall. I tried both pc individually on the same port o the wall.

I'm not sure how i can test to see if the port on the HP switch in the comms room is not working because the light is still on and the web interface shows the port is enabled. Any suggestions?

Plug a laptop directly into the port...  and whether it works or not, plug laptop into the next port(s) to verify.

Steven CarnahanNetwork ManagerCommented:
Is the link light on even when nothing is plugged into it? That would be a sign there is an issue.

You may also want to check the VLAN settings of the port. If it is in a different VLAN than the other ports that work then the issue may go back even beyond the switch to the DHCP server. If the scope on the server for that VLAN is set to exclude the entire range of addresses then it would require a hard coding of an address within that VLAN to function.

The first test would be to verify that the link light goes out when you have nothing connected to the port and then perform the test that ks_admin suggests.

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kwok76_ukAuthor Commented:
Thanks, it was the VLAN settings, don't know why couple of ports was not set corretly as other was. Cheers!
Steven CarnahanNetwork ManagerCommented:
Glad to be of assistance.  I have been "bit" by that one a couple of times.  :)
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