SPX PCI
Sequenced Packet Protocol (NetWare)
Move the mouse pointer to any protocol field and press the left mouse button.
SPX is Novell's adoption of XNS SPP. 4 - SPP - Sequenced Packet Protocol SPX provides acknowledgment and data flow control.
SPX assures error-free and in-order delivery and provides processes with multiple logical connections.
SPX is connection-oriented; connectionless services are provided by PEP. SPX is used by multi-user/multi-tasking stations (example: NetWare file and print servers).
In most cases SPX is used to distribute print jobs from queues to remote printers (RPINTERs); RCONSOLE uses SPX as well.
A second generation SPX protocol - SPX II - was derived from SPX in order to make SPX transmit more data (standard SPX has is limited to max. 534 bytes). SPX II supports any LAN topology and its maximum frame size. SPX II has an additional protocol field: 'extended acknowledgment'.
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