RFC 1963 (rfc1963) - Page 1 of 20

PPP Serial Data Transport Protocol (SDTP)

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Network Working Group                                       K. Schneider
Request for Comments: 1963                                    S. Venters
Category: Informational                                     ADTRAN, Inc.
                                                             August 1996


               PPP Serial Data Transport Protocol (SDTP)

Status of This Memo

   This memo provides information for the Internet community.  This memo
   does not specify an Internet standard of any kind.  Distribution of
   this memo is unlimited.

Abstract

   The Point-to-Point Protocol (PPP) [1] provides a standard method for
   transporting multi-protocol datagrams over point-to-point links.  PPP
   defines an extensible Link Control Protocol, and proposes a family of
   Network Control Protocols for establishing and configuring different
   network-layer protocols.

   This document describes a new Network level protocol (from the PPP
   point of view), PPP Serial Data Transport Protocol, that provides
   encapsulation and an associated control protocol for transporting
   serial data streams over a PPP link.  This protocol was developed for
   the purpose of using PPP's many features to provide a standard method
   for synchronous data compression.  The encapsulation uses a header
   structure based on that of the ITU-T Recommendation V.120 [2].

Table of Contents

     1.     Introduction ..........................................    2
     2.     SDTP Packets ..........................................    3
        2.1       Padding .........................................    4
        2.2       Packet Formats ..................................    4
     3.     Serial Data Control Protocol ..........................   11
     4.     SDCP Configuration Option Format ......................   12
        4.1       Packet-Format ...................................   13
        4.2       Header-Type .....................................   13
        4.3       Length-Field-Present ............................   14
        4.4       Multi-Port ......................................   14
        4.5       Transport-Mode ..................................   15
        4.6       Maximum-Frame-Size ..............................   16
        4.7       Allow-Odd-Frames ................................   16
        4.8       FCS-Type ........................................   17
        4.9       Flow-Expiration-Time ............................   18
     SECURITY CONSIDERATIONS ......................................   19



Schneider & Venters          Informational
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