Win2k with 2 NICs losing internet connection

Microsoft Microsoft windows 2003 server...
July 21, 2009 at 02:48:28
Specs: Windows server 2003
currently i have this setup.

Router (No DHCP) connected to LAN Card A of server and LAN Card B connected to switch. All PCs connected to the switch.

Router IP: 192.168.4.1

LAN Card A:
IP: 192.168.4.2
Subnet Mask:255.255.255..0
Default Gateway: 192.168.4.1
Preffered DNS: IPS's dns server address
Alternative DNS: IPS's dns server address

LAN Card B:
IP: 192.168.4.50
Subnet Mask:255.255.255..0
Default Gateway: Blank
Preffered DNS: Blank
Alternative DNS: Blank

with this setup domain works correctly but very often clients losing internet connection.

what could be the problem.


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#1
July 21, 2009 at 06:14:16
Why do you need 2 NICs when everything is on the same subnet?

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


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#2
July 21, 2009 at 09:46:54
"Preffered DNS: IPS's dns server address
Alternative DNS: IPS's dns server address"

Wrong setup if you are running Active Directory

You don't state what gateway ip the workstations are using.

Post an ipconfig /all from the server and a workstation.


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#3
July 21, 2009 at 20:06:00
"Why do you need 2 NICs when everything is on the same subnet?"

actually a friend setup this server. thats what he suggested.

i guess this is done to monitor net usage, like using ISA server or something.


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#4
July 22, 2009 at 01:11:55
i made some changes, now a bit ok, doesn't that frequently. but still sometime losing net connection.

LAN Card A:
IP: 192.168.4.2
Subnet Mask:255.255.255..0
Default Gateway: 192.168.4.1
Preffered DNS: 192.168.4.50

LAN Card B:
IP: 192.168.4.50
Subnet Mask:255.255.255..0
Default Gateway: Blank
Preffered DNS: 127.0.0.1


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#5
July 22, 2009 at 05:16:56
Make life easy for yourself. Loose one of the NICs.

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


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#6
July 22, 2009 at 08:56:01
"actually a friend setup this server. thats what he suggested.
i guess this is done to monitor net usage, like using ISA server or something."

Your friend misinformed you. You can't monitor or use ISA with those ip addresses. Pointing dns to the loopback ip is wrong.

Correct setup would be as follows
LAN Card A:
IP: 192.168.4.2
Subnet Mask:255.255.255..0
Default Gateway: 192.168.4.1
Preffered DNS: 192.168.4.2

LAN Card B:
IP: 192.168.1.1
Subnet Mask:255.255.255..0
Default Gateway: Blank
Preffered DNS: Blank
Alternative DNS: Blank

This server would provide dhcp to the workstations and the ips it hands out would look like this:

IP: 192.168.1.2-254
Subnet Mask:255.255.255..0
Default Gateway: 192.168.1.1
Preffered DNS: 192.168.1.1

You would engage RRAS to route between the two nics.

This setup also assumes you are running Active Directory and DNS/DHCP server.


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