Routing Information Protocol and Service Advertising Protocol (SAP) are two routing protocols commonly used in Novell NetWare Internetwork Packet Exchange (IPX) small- to mid-size network environments. RRAS supports these routing protocols to enable interoperability in mixed network environments.
RIP for IPX is a simple broadcast protocol used to exchange IPX network routes across a network. This protocol announces routes over each network segment. It is configured periodically so that the routing information kept in the routers is current. Various industry sources indicate that about 15% of the routed networks in place today make use of RIP and SAP for IPX and this number is growing.
RRAS supports network route filters, which enable selective announcements and reception of network routes. RRAS also enables configuration of the timers used for route announcements (for example, the periodic announcement timer).
The Service Advertising Protocol allows nodes that provide services, such as file servers and print servers, to advertise their addresses and the services they provide.
IPX routers send periodic SAP broadcasts to keep all routers on the internetwork synchronized. By default, this is set to every 60 seconds. Routers also send SAP update broadcasts whenever they detect a change in the internetwork configuration.
The implementation of IPX by Windows NT Server (NWLink IPX/SPX Compatible Protocol [NWLink] ) conforms to the Novell IPX Router Specification.
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