CCNA Cisco Certified Network Associate Study Guide - FTP Server

388 Chapter 8 � Configuring Novell IPX
SPX SPX (Sequenced Packet Exchange) adds connection-oriented communications
to the otherwise connectionless IPX. Through it, upper-layer
protocols can ensure data delivery between source and destination nodes.
SPX works by creating virtual circuits or connections between machines,
with each connection having a specific connection ID included in the
SPX header.
RIP RIP (Routing Information Protocol) is a distance-vector routing
protocol used to discover IPX routes through internetworks. It employs
ticks (1/18 of a second) and hop counts (number of routers between
nodes) as metrics for determining preferred routes.
SAP SAP (Service Advertising Protocol) is used to advertise and request
services. Servers use it to advertise the services they offer, and clients use
it to locate network services.
NLSP NLSP (NetWare Link Services Protocol) is an advanced link-state
routing protocol developed by Novell. It’s intended to replace both RIP
and SAP.
NCP NCP (NetWare Core Protocol) provides clients with access to
server resources; functions such as file access, printing, synchronization,
and security are all handled by NCP.
What does the presence of routing protocols, connection and connectionless
transport protocols, and application protocols indicate to you? All of
these factors add up to the fact that IPX is capable of supporting large
internetworks running many applications. Understanding how Novell
uses these protocols clears the way for you to include third-party devices
(such as Cisco routers) into an IPX network.
Client-Server Communication
Novell NetWare follows a strict client-server model (there’s no overlap): a
NetWare node is either a client or a server, and that is that. You won’t find
peer machines that both provide and consume network resources here. Clients
can be workstations running MacOS, DOS, MS Windows, Windows