Internet Packet Exchange (Ipx) - 3Com LANPLEX 2500 EXTENDEDPLEX®2500 EXTENDED User Manual

6-2 C 6: R
HAPTER OUTING WITH
Layers in the
OSI reference model
Application
Presentation
Session
Transport
Network
Data Link
Physical
Internet Packet
Exchange (IPX)
IPX
Appplications
NetBIOS™
Figure 6-1 NetWare Protocols and the OSI Reference Model
The LANplex system uses the following protocols for routing in a Netware
environment:

Internet Packet Exchange (IPX)

Routing Information Protocol (RIP)
Service Advertisement Protocol (SAP)
IPX is the primary protocol used for routing in a netware environment. This
datagram, connectionless protocol does not require an acknowledgment for
each packet sent. Any packet acknowledgment, or connection control, must
be provided by protocols above IPX.
IPX defines internetwork and intranode addressing schemes. IPX
internetwork addressing is based on network numbers that are assigned to
each interface in an IPX network. IPX intranode addressing is in the form of
socket numbers. Since several processes are normally operating within a
node, socket numbers provide a type of mail slot so that each process can
distinguish itself to IPX.
NetWare
NetWare®
Control
Protocol
(NCP)
NetWare®
Shell
(Client)
SPX
IPX
Media Access Protocols
(Ethernet, FDDI)
Service Routing
Information
Advertising
Protocol Protocol
(SAP) (RIP)