Re: Windows 2003 server loses 'default gateway'

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Why do you have a default gateway set on your private side NIC? A
machine can only have one default gateway and one default route (not one per
interface!) Only one default route can be active at any time.

What exactly do you think the default gateway setting on the internal
NIC does for you?

ChipDancer wrote:
> I am having the exact same problem here!
>
> The server (windows 2003 standard) ran fine for over a year, then
> suddenly the public connection just started dropping the default
> gateway. At first we thought it was something corrupt in the OS and
> had to keep rebooting the server once of twice a day so we tore the
> system down and rebuilt it from scratch.
>
> But the problem remained, so we assumed it might be a faulty NIC and
> we replaced that as well and the problem remained.
>
> I found out that instead of rebooting I could just go into network
> properties for the connection and hit the repair option and that
> would fix the connection, but this is rediculous!
>
> INFO: Two seperate NICS. One for the internal network configured with
> a different gateway and IP range to match the internal network; is a
> static IP and DNS and has never had a problem.
>
> Second NIC is also static with configured IP and DNS on a seperate
> gateway that we use for public access, specifically FTP on this
> system. It always loses it's default gateway within a day, sometimes
> twice!
>
> Please note that our domain server, SBS 2003 Pro uses the same public
> config as the problem server and suffers no such problems (different
> IP though).
>
> Please help! I'm at my wits end and am starting to believe that
> perhaps something that MS included in one of it's patches is the
> cause of this.
>
> Thanks in advance,
>
> ChipDancer
>
>
>
>
>
> "Arek Iskra [MVP]" wrote:
>
>> "Blake" <blake_duffey@xxxxxxxxxxxxxxxxxx> wrote in message
>> news:up75TzTXFHA.628@xxxxxxxxxxxxxxxxxxxxxxx
>>> We have a Windows 2003 machine that was an in-place upgrade of
>>> Windows 2000 server. This machine also runs Oracle. Twice in the
>>> past week this machine has dropped network connectivity - running
>>> 'ipconfig' shows that it has no 'default gateway' entry, so it
>>> can't communicate beyond its subnet.
>>>
>>> A reboot clears the problem, but I fear it will return. Has anyone
>>> seen this behavior?
>>>
>>> Thanks
>>> Blake
>>>
>>
>> Is your server configured to obtain IP configuration from DHCP? You
>> might want to configure your server with static IP address and
>> hardcode the rest of parameters such as default gateway as well.
>>
>> --
>> Arek Iskra
>> MVP for Windows Server - Software Distribution


.

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