Default Gateway Sometimes Not Right

June 11, 2009 at 17:19:17
Specs: Windows Server 2003
Hello Everyone, I am pretty much a "noob" to the whole DHCP/DNS concept on a Windows Server machine but I am eager to learn and have fixed a few issues in regards to what has been setup in the organization...

However, there is this one issue I can't seem to narrow down and weed out and it is that sometimes, when a user restarts their computer and there I.P. is reassigned it is given the wrong "Default Gateway" (, the server itself), If I try releasing and renewing on the client PC, it does nothing. But the second I disable his/her adapter and re-enable it, it is assigned the proper one. Where in the world is it getting the wrong Default Gateway from?

Here is how the Network is setup

Router/Internet: [Correct Gateway]
Domain Controller:
Domain Controller 2:

What settings Do I need to look at? Why does it fix itself once I disable/re-enable the adapter?

Thanks! Hope you guys can help!

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June 11, 2009 at 19:46:51
Only one device should be acting as a DHCP server. My guess is is also running it.

How do you know when a politician is lying? His mouth is moving.

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June 11, 2009 at 19:51:17
This is confusing to explain is handing out the addresses (as a DHCP server should)... the (the router) does not have a DHCP function enabled, it's essentially just there to connect us to the Internet. is our 2nd Domain Controller... its not acting as a DHCP either.

in the scope options for "ROUTER" is set as -- So it's fine logically. Everything is set, only when I restart a computer does the gateway sometimes change to -- the problem with that is that it doesnt let us use the Internet, but network is fine!

What do I do to fix it? :(

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June 12, 2009 at 05:26:49
Does have it's IP & default gateway set statically? It should.

Actually, for small networks I use static IPs for everything. Does it ever have trouble connecting to the net?

How do you know when a politician is lying? His mouth is moving.

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