How-to implement multiple lan interfaces in Windows 2000 Server

Posted on 2004-11-14
Last Modified: 2010-04-10
In my situation I have a single server acting as A/D, DHCP, DNS and SQL server for my network of workstations. The same server is connected to an off-site remote storage faciltiy that keeps a copy of our data. I am concerned that when I start sending large volumes of data from the server to the internet a single interface to the LAN becomes congested. Can I put a second NIC in the server and have all of my LAN traffic go through one and all of the server to internet traffic go through the other? How does one set the up in Windows 2000.

Thanks in advance
Question by:YBrash
    LVL 87

    Expert Comment

    That would have been the way to do it from the beginning, not because of the line getting congested (what is your internet bandwidth?), but for security reasons. It is always better to have different networks on different segments.

    Theoretically you can put as many interfaces into a server as you want, you just need enough empty slots. You can get multinetwork cards, where one card maybe has 4 network sockets.
    LVL 5

    Assisted Solution

    When you place the new network card in the server your routing table will need to be updated (see it with 'ROUTE PRINT').

    previously you had a default gateway on the server that looks like this:

    Active Routes:
    Network Destination        Netmask          Gateway       Interface  Metric
       20       20       20
         20               3       1       1
    Default Gateway:

    The NIC on the LAN will have the route to the 192.168.x.x network (based on his IP and subnet mask).  The other NIC should be setup as the default gateway.  If you have to tweak some routes, use the 'route add' command from the command line.  You can save those to a batch file for when the server reboots if needed.
    LVL 6

    Expert Comment

    Adding more cards and segments may not the best way to fix your congestion.

    Adding  a second card may not speed things up much. Adding another segment may help, but you will need a router to make it happen (IE. more complex)

    First  make sure you know where the slow down is.

    1. your lan
    2. your server
    3. your Iinternet connection

    An other option are a faster lan (if you are only at 100 mb you look at 1000 mb).

    LVL 4

    Accepted Solution

    1. In windows 2000 setup the NIC the same way you would any other NIC adding the drivers and an IP Address.

    2. Add a host based route to the server for the network of the storage facility.

        Example: route print <to see the existing routes on the server>

                       route -p add <destination_network> mask <subnet mask> <gateway> <metric> <interface>
                                                  30             2

    3. Test connectivity by using tracert to ensure traffic is taking appropriate path.


    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Threat Intelligence Starter Resources

    Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

    Article by: IanTh
    Hi Guys After a whole weekend getting wake on lan over the internet working, I thought I would share the experience. Your firewall has to have a port forward for port 9 udp to your local broadcast x.x.x.255 but if that doesnt work, do it to a …
    Some time ago I was asked to set up a web portal PC to put at our entrance. When customers arrive, they could see a webpage 'promoting' our company. So I tried to set up a windows 7 PC as a kiosk PC.......... I will spare you all the annoyances I…
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
    This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor ( If you're looking for how to monitor bandwidth using netflow or packet s…

    779 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    17 Experts available now in Live!

    Get 1:1 Help Now