## Routing

Both Windows NT and UNIX systems support RIP , the most common LAN routing protocol. Either operating system acts as software router and learn routes from other routers. As with remote-access servers, UNIX administrators usually buy dedicated hardware for routing instead of using existing UNIX hosts. The base installation of Windows NT supports routing among different network interfaces. The RRAS add-on includes support for dial-on-demand interfaces and the OSPF routing protocol. Dial-on-demand routing lowers cost when you use switched services such as POTS or ISDN because the link is established only when there is traffic to send. OSPF improves RIP by handling network complexity and routing updates more efficiently. RRAS includes a command-line interface for configuring the router, which may be more comfortable for UNIX administrators coming from a non-GUI environment.

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Last Updated: December 1, 1997