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The PPP Multilink Protocol (MP) (RFC1990)

IP.com Disclosure Number: IPCOM000004267D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2019-Feb-14
Document File: 24 page(s) / 32K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Sklower: AUTHOR [+4]

Related Documents

10.17487/RFC1990: DOI

Abstract

This document proposes a method for splitting, recombining and sequencing datagrams across multiple logical data links. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group K. Sklower Request for Comments: 1990 University of California, Berkeley Obsoletes: 1717 B. Lloyd Category: Standards Track G. McGregor Lloyd Internetworking D. Carr Newbridge Networks Corporation T. Coradetti Sidewalk Software August 1996

The PPP Multilink Protocol (MP)

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Abstract

This document proposes a method for splitting, recombining and sequencing datagrams across multiple logical data links. This work was originally motivated by the desire to exploit multiple bearer channels in ISDN, but is equally applicable to any situation in which multiple PPP links connect two systems, including async links. This is accomplished by means of new PPP [2] options and protocols.

The differences between the current PPP Multilink specification (RFC 1717) and this memo are explained in Section 11. Any system implementing the additional restrictions required by this memo will be backwards compatible with conforming RFC 1717 implementations.

Acknowledgements

The authors specifically wish to thank Fred Baker of ACC, Craig Fox of Network Systems, Gerry Meyer of Spider Systems, Dan Brennan of Penril Datability Networks, Vernon Schryver of SGI (for the comprehensive discussion of padding), and the members of the IP over Large Public Data Networks and PPP Extensions working groups, for much useful discussion on the subject.

Sklower, et. al. Standards Track [Page 1]

RFC 1990 PPP Multilink August 1996

Table of Contents

1. Introduction ................................................ 2 1.1. Motivation ................................................ 2 1.2. Functional Description .................................... 3 1.3. Conventions ............................................... 4 2. General Overview ............................................ 4 3. Packet Formats .............................................. 7 3.1. Padding Considerations .................................... 10 4. Trading Buffer Space Against Fragment Loss .................. 10 4.1. Detecting Fragment Loss ................................... 11 4.2. Buffer Space Requirements ................................. 12 5. PPP Link Control Protocol Extensions ........................ 13 5.1. Configuration Option Types ................................ 13 5.1.1. Multilink MRRU LCP option ............................... 14 5.1.2. Short Sequence Number Header Format Option .............. 15 5.1.3. Endpoint Discriminator Option ........................... 15 6. Initiating use of Multilink Headers ......................... 19 7. Closing Member links ........................................ 20 8. Interaction with Other Protocols ..............

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