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A rchive Date
[ 17-05-2001 ]
Category
[ Information Technologies ]
sub-Categoy
[ Microsoft ]
      [
      http://www.helmig.com/j_helmig/routeset.htm
      Setup TCP/IP Routing
      The following network Routing assumes that you have knowledge of TCP/IP setup and on setting up systems with MULTIPLE network adapters):


      System #1:
      This system (can be Windows95/98 or NT4) has only 1 Network card and is configured (example is using NT4) :

      This system knows about all systems on its own network cable (192.168.1.x) and will use the Gateway/Router 192.168.1.2 (which is System#2) for communications with any other system.

      System#2:
      This is a Windows NT4 system configure with 2 Network cards:


      The first Network card communicates with System#1:


      the second Network card communicates with System#3:


      In addition, NT4 TCP/IP protocol must be configured to "route":


      System#2 can communicate directly with System#1 and System#3, but NOT with System#4 (because it does NOT know about a network 192.168.3.x and how to reach it).

      We need to help System#2 by giving some information, on how to get to System#4, by either defining System#3 as a Gateway or by manually manipulating the TCP/IP routing tables using the command-line utility ROUTE.
      ROUTE.EXE is part of Windows95 and Windows NT4 and is documented in the       Resource Kit:


      In our example, we would enter on system#2:
      ROUTE ADD 192.168.3.      0 192.168.2.11
      this informs System#2, that all communications for TCP/IP addresses 192.168.3.      x (the '0' in the route-command translates to 'each system with an address 192.168.3.x', which in our example includes System#4) has to go via 192.168.2.11 ( which is System#3).

      The rest of the Network is configured similar to Systems#1 and #2.

      If you like more info on the ROUTE-command, please look at the following article in the Microsoft Knowledge Base:
      http://support.microsoft.com/support/kb/articles/q158/4/74.asp

      Test your setup using PING:
      Example: from System#1


      System#1 can communicate with System#2 and #3 in this test.

      Example: from System#3


      System#3 can communicate with System #2, but NOT with System#1.
      In such cases, check on ALL system the IP-addresses, Gateway-addresses and that IP-forwarding is enabled.

      And don't forget: IT MUST WORK IN BOTH DIRECTIONS, otherwise the system receiving the PING-test-signal does NOT know on which route to send the echo back !

      Browsing a system, which is accessed via a Router

      Workgroups have limitations, and one of them is:
      Systems on different network cables cannot be in the same workgroup !
      To access a system via a router, you need to use the "Find"-command in the Windows Start-bar and search for a Computer:


      To avoid getting an Error-message:

      you need to create/update the file "LMHOSTS":

      On Windows95, a sample-version called LMHOSTS.SAM is installed with TCP/IP in your Windows-directory. Rename/copy it to LMHOSTS and enter the IP-address with the computername, then you can "find" this system:


      Now the big question: Can I use Windows95 as a Router ?

      Officially: NO.
      Microsoft has reserved the functionality to route for Windows NT.

      Unofficially: YES,       but with limits
      I have not yet tested this myself, but have seen in the Newsgroups several postings, that it is possible

      "Want windows 95 to act as a router!
      (       http://gargoyle.apana.org.au/~nat )
      using Windows95 as a TCP/IP Router between       ONE Ethernet-cable and a Dialup Networking connection with a STATIC IP-address


      Apparently, you need the Dialup-Networking Upgrade 1.2, which includes a TCP/IP upgrade, and then need to define in your Windows95 Registry:

      key:[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
      new value (as StringValue): "1""



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