Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX)
is a protocol stack developed specifically for NetWare
architecture. The IPX/SPX stack includes IPX and SPX. IPX
defines the addressing schemes used on a NetWare network, and
SPX provides security and reliability to the IPX protocol. IPX
is a network-layer protocol that is equivalent to the IP of the
TCP/IP protocol stack. SPX provides reliable service at the
transport layer.
IPX/SPX has the following characteristics:
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It is used on networks with NetWare servers.
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It is routable. IPX/SPX enables computers in a routed
networking environment to exchange information across
segments.