Re: Default Gateway Reverts to Old Setting

In news:%230rZTi8wGHA.4576@xxxxxxxxxxxxxxxxxxxx,
DukieDallas <dukiedallas@xxxxxxxxxxxxx> stated, which I commented on below:
Having a problem with the default gateway setting on a WinSvr2003 Std
box at one of my clients.

This server is on the only IP subnet at the client's main office. It's
configured as a DC with another DC on the subnet, which is an
SBS2003 Premium box which holds all the FSMO roles. Both DCs run DNS
for the domain, but onlly the SBS2003 server runs WINS.

The server has two identical 10/100/1000 NICs, plus a (Broadcom) BASP
Virtual Adapter which is part of optional NIC teaming. We're not
doing any of the teaming, and the BASP Virtual Adapter and one of the
physical NICs are disabled.

We re-numbered the IP subnet in this office as part of a IP numbering
architecture involving several branch offices VPNs with this main
office as the VPN hub. The previous subnet was 192.168.0.0/24 with
the old default gateway at 192.168.0.1. The renumbered subnet is
192.168.60.0/24 with the default gateway at 192.168.60.254.

The server has static IP addressing on the active NIC. TCP/IP
properties are left to use DHCP on the two disabled NICs, not that it
should matter. TCP/IP is the only network protocol installed. DNS &
WINS are set correrctly and NetBIOS is enabled on the active NIC. Advanced
Settings in Network Properties look right as to sequence and
protocol bindings.
The problem is that the default gateway setting for the active NIC
keeps reverting back to 192.168.0.1 from 192.168.60.254 at random
times. After it's set correctly, it'll revert back after the server
runs for some period of time. It may revert back after a reboot (but
not always), overnight (during which a backup normally occurs, using
BackupExec Remote Agent) or just after a few hours.

I've re-set the default gateway numerous times, but it always reverts
back to the old, now non-existent IP. I've searched the registry
many times and removed or updated any reference to the old
192.168.0.x network. I've also changed which NIC is the active one
and set the IP addressing correctly on the new one only to have the
gateway get changed to the old 192.18.0.1 one on that NIC which had
never been on that old network. Haven't found anything on-point in
the Microsoft Support KnowledgeBase.
We're at the point now of maybe removing/reinstalling the TCP/IP
and/or networking software on this box. But we don't know if that
will cure this and it's a hassle anyway.

Anyone have any ideas?

Thanks,
DD

Anyone have any i

Only thing I can think of is there is some 3rd party software running that
may be causing this. Can you list what's installed even as minuscule as it
may sound? Something is doing it. Maybe a firewall or security app, if it's
Terminal Server, maybe something a user installed, etc.

--
Ace
Innovative IT Concepts, Inc
Willow Grove, PA

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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