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        RFC 1547:

        Title:      Requirements for an Internet Standard
                    Point-to-Point Protocol
        Author:     D. Perkins
        Mailbox:    perkins+@cmu.edu
        Pages:      21
        Characters: 49,810
        Updates/Obsoletes:  none


This document discusses the evaluation criteria for an Internet
Standard Data Link Layer protocol to be used with point-to-point
links.  Although many industry standard protocols and ad hoc protocols
already exist for the data link layer, none are both complete and
sufficiently versatile to be accepted as an Internet Standard.  In
preparation to designing such a protocol, the features necessary to
qualify a point-to-point protocol as an Internet Standard are
discussed in detail.  An analysis of the strengths and weaknesses of
several existing protocols on the basis of these requirements
demonstrates the failure of each to address key issues.  Historical
Note: This was the design requirements document dated June 1989, which
was followed for RFC 1134 through the present.  It is now published
for completeness and future guidance.  This document is the product of
the Point-to-Point Protocol Extensions Working Group of the IETF.

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Joyce K. Reynolds
USC/Information Sciences Institute