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Pup: An Internetwork Architecture

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4 Author(s)
Boggs, D. ; Palo Alto Research Center, Xerox Corporation, Palo Alto, CA, USA ; Shoch, J.F. ; Taft, E. ; Metcalfe, R.

Pup is the name of an internet packet format (PARC Universal Packet), a hierarchy of protocols, and a style of internetwork communication. The fundamental abstraction is an end-to-end media-in dependent internetwork datagram. Higher levels of functionality are achieved by end-to-end protocols that are strictly a matter of agreement among the communicating end processes. This report explores important design issues, sets forth principles that have guided the Pup design, discusses the present implementation in moderate detail, and summarizes experience with an operational internetwork. This work serves as the basis for a functioning internetwork system that provides service to about 1000 computers, on 25 networks of 5 different types, using 20 internetwork gateways.

Published in:

Communications, IEEE Transactions on  (Volume:28 ,  Issue: 4 )