IPX

from The Free On-line Dictionary of Computing (8 July 2008)

Internetwork Packet eXchange
IPX

   <networking> (IPX) A {network layer} {protocol} initially
   developed at {XEROX Corporation} and made popular by {Novell,
   Inc.} as the basic protocol in its {Novell NetWare} {file
   server} {operating system}.

   A {router} with IPX routing can interconnect {Local Area
   Networks} so that Netware {clients} and {servers} can
   communicate.

   The {SPX} {transport layer} protocol runs on top of IPX.

   (1997-03-04)