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The PPP Multilink Protocol (MP) (RFC1717)

IP.com Disclosure Number: IPCOM000003964D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 17 page(s) / 43K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Sklower: AUTHOR [+4]

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.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group K. Sklower

Request for Comments: 1717 University of California, Berkeley

Category: Standards Track B. Lloyd

G. McGregor

Lloyd Internetworking

D. Carr

Newbridge Networks Corporation

November 1994

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.

Acknowledgements

The authors specifically wish to thank Fred Baker of ACC, Craig Fox

of Network Systems, Gerry Meyer of Spider Systems, Tom Coradetti of

Digiboard (for the Endpoint Discriminator option), 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.

Table of Contents

1. Introduction ................................................ 2

1.1. Motivation ................................................ 2

1.2. Functional Description .................................... 3

1.3. Conventions ............................................... 3

2. General Overview ............................................ 4

3. Packet Formats .............................................. 6

3.1. Padding Considerations .................................... 9

4. Trading Buffer Space Against Fragment Loss .................. 9

4.1. Detecting Fragment Loss ................................... 10

4.2. Buffer Space Requirements ................................. 11

5. PPP Link Control Protocol Extensions ........................ 12

5.1. Configuration Option Types ................................ 12

5.1.1. Multilink MRRU LCP option ............................... 13

5.1.2. Short Sequence Number Header Format Option .............. 13

5.1.3. Endpoint Discriminator Option ........................... 14

6. Closing Member lin...