June 2000
Intermediate to advanced
512 pages
15h 18m
English
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Configuring an IPX Router
You will recall from our short discussion of the protocols used in an IPX environment that IPX is a routable protocol and that the Routing Information Protocol (RIP) is used to propagate routing information. The IPX version of RIP is quite similar to the IP version. They operate in essentially the same way; routers periodically broadcast the contents of their routing tables and other routers learn of them by listening and integrating the information they receive. Hosts need only know who their local network is and be sure to send datagrams for all other destinations via their local router. The router is responsible for carrying these datagrams and forwarding them on to the next hop in the route.
In an IPX environment, a second class of information must be propagated around the network. The Service Advertisement Protocol (SAP) carries information relating to which services are available at which hosts around the network. It is the SAP protocol, for example, that allows users to obtain lists of file or print servers on the network. The SAP protocol works by having hosts that provide services periodically broadcast the list of services they offer. The IPX network routers collect this information and propagate it throughout the network alongside the network routing information. To be a compliant IPX router, you must propagate both RIP and SAP information.
Just like IP, IPX on Linux provides a routing daemon named ipxd to perform the tasks associated ...
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