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Enabling IP Routing

This article was previously published under Q99686
SUMMARY
This article describes how to enable IP routing in Windows NT andhow to configure static routing tables using ROUTE.EXE.

How to Enable IP Routing

Routing between subnets is disabled by default for the TCP/IP protocolin Windows NT. To enable routing, following these steps:

WARNING: Using Registry Editor incorrectly can cause serious, system-wideproblems that may require you to reinstall Windows NT to correct them.Microsoft cannot guarantee that any problems resulting from the use ofRegistry Editor can be solved. Use this tool at your own risk.

  1. Start Registry Editor (REGEDT32.EXE) and go to the following subkey:
          HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip      \Parameters					
  2. From the Edit menu, choose Add Value.
  3. Enter the following values:
    Value Name: IpEnableRouter
    Data Type: REG_DWORD
    Value: 1
  4. Exit Registry Editor and restart Windows NT.

Configuring Static Routing Tables

If two subnets are separated by more than one Windows NT machine or bya router, Windows NT can route between the subnets if you manuallyconfigure the routing tables. Static configurable routing issupported, but neither routing information protocol (RIP) or OSPF aresupported.

The ROUTE.EXE command manually configures network routing tables.ROUTE has the following syntax:
route [-fs] [command [destination][gateway]]

Switches

   -f Clears routing tables   -s Packets for which no destinations are found are routed to the      smart gateway.				

Commands

   add      Adds a route   delete   Deletes a path   print    Prints a route   change   Changes an existing route				
All symbolic names used for gateway and destination are looked up inthe database files NETWORKS and HOSTS.
prodnt tcp/ip
Properties

Article ID: 99686 - Last Review: 10/31/2006 22:45:35 - Revision: 3.1

  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1
  • kbnetwork KB99686
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