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Multi-home IP support of NetWare 3.12

Posted on 1998-02-22
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Last Modified: 2012-08-13
I have setup a Netware 3.12 server as an IPX/IP router between two network segment. a NT server on one segment acts as proxy server, it has multi-home IP addresses, in order to have other computers can access the other addresses of the proxy server, I have to make the Netware server also have multi-home addresses, for routing the IP packages to the proxy server.

Could someone please tell me how do I setup multi-home address on Netware 3.12?
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Question by:Bing CISM / CISSP
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paulnic earned 50 total points
ID: 1591822
You can download the latest TCP/IP update, which runs on Netware 3.x and 4.x, from http://support.novell.com/cgi-bin/search/patlstfind.cgi?2930326

This version supports multihoming when set up as shown in the following Novell tech note:  

---------

TCP/IP Multihoming Support for NAT & WEB Serv  (Last modified: 09JAN1998)

     This document (2921073) is provided subject to the disclaimer at the end of this document.
       
     Issue

     1. What is multihoming for Novell's TCPIP.NLM?

     The term "multihoming" has a couple definitions in the industry. Multihoming with Novell's TCPIP.NLM is the capability of a single network interface to assume multiple network identities on the *same* subnet. For example, a single network interface can be assigned 3 IP addresses:
     130.57.5.1, 130.57.5.2, and 130.57.5.3.

     2. Where is multihoming used ?

     a. It is used with BorderManager's NAT to add multiple valid public IP addresses to the interface connected to the internet, so that NAT static mode can be used to associated a valid IP address to an invalid IP address so that a SMTP box on the inside can send and receive mail, or to allow users on the internet to access a WEB server or other service on the inside.
     
     b. The other most common usage is in making it possible for one Website server to appear as though it is several servers. For example, each Secondary IP Address is made to point to a different Web Page on the same Web Server, depending on the DNS name that is used to reach the server.

     3. What version of TCPIP.NLM version supports Multihoming?

     TCPIP v4.xx which is available in the patch TCPN04A.EXE or later at (http://support.novell.com).
     It is a common, general purpose TCPIP update for NetWare.

     The TCP/IP in BorderManager does support this out of the box, because it contains the tcp/ip in TCPN04A.EXE, but newer TCP/IP's will be released periodically, so a future TCPN0x.EXE may need to be applied.

     4. How do we use the multihoming support?

     After loading the TCPIP.NLM on the server and binding an address to the server, use the following procedure to add a secondary or many additional IPAddresses to the original binding.

     To add a second or even more IP addresses to a network board:
     1. Edit SYS:SYSTEM\AUTOEXEC.NCF.

     2. Add the following line after the last BIND statement or after the (SYS:ETC\INITSYS.NCF statement) in the autoexec.ncf:

     add secondary IPAddress x.x.x.x

     Where "x.x.x.x" is on the *same* network as the IP address used in the BIND statement.
     Repeat the command for all secondary IP addresses needed.
     NOTE: This procedure is only supported with command lines. It is not supported in INETCFG at this time.
         
     3.Save the file.

     The following options are available on the system console:
     To delete a secondary IPAddress, use the command

     del secondary IPAddress x.x.x.x

     To display or see the secondary IP Addresses associated with all the interface bindings, use the command

     display secondary IPAddress

     Support Binding of Multiple IP addresses in the same subnet to a Board Example:

     bind ip ne2000 addr=130.57.176.1 mask=ff.ff.ff.0

     Add Secondary IPAddress 130.57.176.2
     Add Secondary IPAddress 130.57.176.3

     Del Secondary IPAddress 130.57.176.3

     Display Secondary IPAddress

                    Please select if this document solved your problem.

      Document Title:
                          TCP/IP Multihoming Support for NAT & WEB Serv
      Document ID: 2921073

      Creation Date:  11FEB97
      Modified Date:  09JAN98
      Document Revision:  4
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by:Bing CISM / CISSP
ID: 1591823
Thanks for your answer,  and sorry for my later replying.

Could you tell me does it support multi-home IP in different subnet? AFAIK, it is supported on NT server. For example, a host with the following addresses:

202.102.126.047 255.255.255.224
202.102.126.183 255.255.255.224
202.102.126.200 255.255.255.224

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by:Bing CISM / CISSP
ID: 1591824
Hi Paulnic, are you here? :-)
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