Repair Network connection

[Peter Treloar]

Can someone tell me what Repairing the network connection actually does ?

I have a computer our new Sr. VP is trying to use via ADSL at home. When we
configured it at work the network was fine. But at his home it drops the
network connection every 3-4 minutes. Repairing the connection works but
only for another 3-4 minutes. Doing an IPCONFIG release/renew also fixes the
problem, temporarily

He is connected to the ADSL router via a switch and another computer in the
house works without any problems. I've tried different ports on the switch
and even connecting directly to the modem with different cables but it made
no difference.

Anyone have any advice where to look next.

Thanks,

Peter.

[Marc Reynolds [MSFT]]

Hi Peter,

Here is what the repair option does:

- Dynamic Host Configuration Protocol (DHCP) lease is renewed: ipconfig
/renew

- Address Resolution Protocol (ARP) cache is flushed: arp -d *

- Reload of the NetBIOS name cache: nbtstat -R

- NetBIOS name update is sent: nbtstat -RR

- Domain Name System (DNS) cache is flushed: ipconfig /flushdns

- DNS name registration: ipconfig /registerdns

The following action has been added to Windows XP Service Pack 1:


- IEEE 802.1X Authentication Restart

Have you tried a different network card in your bosses computer?
What exactly happens when it "drops the connection"? Can you ping the
default gateway by IP address? Can you ping the computers own IP address?

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.

[Peter Treloar]

Thanks Marc.

The NIC is a SIS900 built into the motherboard so changing it is not an
option. The PC worked fine for 3 days connected to the network at work. It
gets it's IP address via DHCP at both locations. I've tried different cables
and bypassing the switch. There is another PC on the network so I don't
think the problem is the modem.

He was using AOL over the high speed link and got an error message that he
had been disconnected from the remote server. He then tried to start IE and
got error messages that the Page can not be displayed.

I could not Ping anything at this point.

Repairing the connection fixes everything but only for about 3 minutes.

Telus ADSL in Alberta CA. require the MAC address to be registered on their
server to get an IP address. I'm wondering if there is something wrong with
their set up.

Do you know if there is a way of checking the DHCP info being fed from a
server. Are errors reported some where.

Peter.

"Marc Reynolds [MSFT]" > wrote in message
...
> Hi Peter,
>
> Here is what the repair option does:
>
> - Dynamic Host Configuration Protocol (DHCP) lease is renewed: ipconfig
> /renew
>
> - Address Resolution Protocol (ARP) cache is flushed: arp -d *
>
> - Reload of the NetBIOS name cache: nbtstat -R
>
> - NetBIOS name update is sent: nbtstat -RR
>
> - Domain Name System (DNS) cache is flushed: ipconfig /flushdns
>
> - DNS name registration: ipconfig /registerdns
>
> The following action has been added to Windows XP Service Pack 1:
>
>
> - IEEE 802.1X Authentication Restart
>
> Have you tried a different network card in your bosses computer?
> What exactly happens when it "drops the connection"? Can you ping the
> default gateway by IP address? Can you ping the computers own IP address?
>
> Thanks,
> Marc Reynolds
> Microsoft Technical Support
>
> This posting is provided "AS IS" with no warranties, and confers no
rights.
>

[Marc Reynolds [MSFT]]

Hi Peter,

From what I see there are two possibilites:

1. The NIC is bad, try adding a another NIC and testing - you should be
able to add a PCMCIA or USB NIC as a test. Since the MAC address needs to
be registered with the ISP, you'll need to do that before testing.

2. Something is messed up at the ISP and the NIC's MAC address is
registered incorrectly (or not at all). When it fails, does the NIC still
show an IP address? If not, contact your ISP.

If all else fails, your best bet may be to get a sniff and see what is
happening (or not happening) on the wire just before a failure. You can run
rasdiag on the client to get a sniff.


Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.