This article was previously published under Q99686
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.
Start Registry Editor (REGEDT32.EXE) and go to the following subkey:
Value Name: IpEnableRouter Data Type: REG_DWORD Value: 1
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]]
-f Clears routing tables -s Packets for which no destinations are found are routed to the smart gateway.
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.