[windows2000] Re: Setting Default Route for a Dual NIC machine

  • From: "Jensen, Douglas" <douglas.jensen@xxxxxxxxxxxxx>
  • To: <windows2000@xxxxxxxxxxxxx>
  • Date: Wed, 5 Oct 2005 10:54:07 -0500

Glenn is probably right that you do not need to add that route because
the server will figure out automatically that the 192.168.2.whatever
should go to the 192.168.2.10 interface. 

The route add I listed was wrong anyway. Should have referenced the
interface 192.168.2.10 and address to send traffic to as 192.168.2.1.

Sorry
Doug

-----Original Message-----
From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Jensen, Douglas
Sent: Wednesday, October 05, 2005 10:50 AM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: Setting Default Route for a Dual NIC machine

You only want one default gateway defined so you would leave the NIC
with the 192.168.2.1 address with a blank default gateway. Then your
only default gateway is 192.168.111.9

Then you do a route add for the subnet 192.168.2.0 and tell it which
interface to use (192.168.111.12) and what address to send that traffic
to (192.168.111.9).

Doug



-----Original Message-----
From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of List Account
Sent: Wednesday, October 05, 2005 10:24 AM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Setting Default Route for a Dual NIC machine

Folks,

DISCLAIMER: Forgive the long post...

I'm running into an issue on my Windows 2000 (SP4) server where internet
traffic is being sent out the default gateway. Doesn't sound like a
problem, but the default gateway is wrong. The machine has two NIC's,
each belonging to a different internal network with different gateways.
I need one of those networks to be the default route for all traffic,
and the other used only for traffic destined to that specific network.

Here's a copy of the routing table:

C:\Documents and Settings\Administrator>route print
========================================================================
===
Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 06 5b f1 c5 67 ...... Broadcom NetXtreme Gigabit
Ethernet Driver

0x1000004 ...00 06 5b f1 c5 66 ...... Broadcom NetXtreme Gigabit
Ethernet Driver

========================================================================
===
========================================================================
===
Active Routes:
Network Destination        Netmask          Gateway       Interface
Metric
          0.0.0.0          0.0.0.0      192.168.2.1    192.168.2.10
1
          0.0.0.0          0.0.0.0    192.168.111.9  192.168.111.12
1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1
1
      192.168.2.0    255.255.255.0     192.168.2.10    192.168.2.10
1
     192.168.2.10  255.255.255.255        127.0.0.1       127.0.0.1
1
    192.168.2.255  255.255.255.255     192.168.2.10    192.168.2.10
1
    192.168.111.0    255.255.255.0   192.168.111.12  192.168.111.12
1
   192.168.111.12  255.255.255.255        127.0.0.1       127.0.0.1
1
  192.168.111.255  255.255.255.255   192.168.111.12  192.168.111.12
1
        224.0.0.0        224.0.0.0     192.168.2.10    192.168.2.10
1
        224.0.0.0        224.0.0.0   192.168.111.12  192.168.111.12
1
  255.255.255.255  255.255.255.255     192.168.2.10    192.168.2.10
1
Default Gateway:       192.168.2.1
========================================================================
===
Persistent Routes:
  None

The default gateway listed in the route table is 192.168.2.1, which is
the default gateway of the 0x10000003 NIC. Here's the output of ipconfig
/all

Windows 2000 IP Configuration

        Host Name . . . . . . . . . . . . : vault_mirror
        Primary DNS Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Broadcom NetXtreme Gigabit Ethernet Adapter
-192.168.111.13:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit
Ethernet
#2
        Physical Address. . . . . . . . . : 00-06-5B-F1-C5-67
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.2.10
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.2.1
        DNS Servers . . . . . . . . . . . : x.x.x.x
                                            x.x.x.x
        Primary WINS Server . . . . . . . : x.x.x.x

Ethernet adapter Broadcom NetXtreme Gigabit Ethernet Adapter
-192.168.111.12:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit
Ethernet
        Physical Address. . . . . . . . . : 00-06-5B-F1-C5-66
        DHCP Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.111.12
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.111.9
        DNS Servers . . . . . . . . . . . : x.x.x.x
                                            x.x.x.x
        Primary WINS Server . . . . . . . : x.x.x.x
        NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>

What I need to happen is the DEFAULT GATEWAY listed in the route table
be the 192.168.111.9 address. How do I change this? I've looked through
the registry keys located at
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip and found no mention of how
to change this. I've attempted to change the interface metric and
gateway metric settings within the TCP/IP properties of the NIC's
themselves, but this has no effect on the default gateway. I've
attempted to change the last route listed (since it is the only route
that is unique to a given address). The error it gives me when I try to
add a duplicate route to the last one listed is "route: bad destination
address 255.255.255.255.  I've read through the Windows 2000 TCP/IP
implementation details and could not find the specifics on how to change
this. Is it simply a route I need to modify for this value to change?

Is there a way to change this?

Thanks!
Nathan Grandbois
Cerdant, Inc.
614.717.0123 ext. 26 

PS> If anything isn't clear, let me know and I'll be more detailed. 
PPS> If I need to RTFM, please point out the FM.

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