End System to Intermediate System Routing Exchange Protocol for use in conjunction with ISO 8473
RFC 995

Document Type RFC - Unknown (April 1986; No errata)
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Network Working Group                                   ANSI X3S3.3 86-118
Request for Comments: 995                              ISO TC97/SC6/N 4053
                                                                April 1986

                                 I S O
             INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
              ORGANISATION INTERNATIONALE DE NORMALISATION

     ______________________________________________________________________
    |                                                                     |
    |                            ISO/TC 97/SC 6                           |
    |                TELECOMMUNICATIONS AND INFORMATION                   |
    |                     EXCHANGE BETWEEN SYSTEMS                        |
    |                       Secretariat: USA (ANSI)                       |
    |                                                                     |
    |                                                                     |
    |_____________________________________________________________________|

  Title:    End System to Intermediate System Routing Exchange Protocol
            for use in conjunction with ISO 8473

  Source:   SC6/WG2
            Project 97.6.41

  ___________________________________________________________________________
 |This document is a progression of SC6/N3862, edited to incorporate member |
 |body comments and discussion at the Florence meeting of SC6/WG2. Pursuant |
 |to Recommendation 5 of that meeting, comments from member bodies on this  |
 |revision text are requested for discussion at the Tokyo meeting of SC6    |
 |and WGs.                                                                  |
 |__________________________________________________________________________|

ISO N4053                                                       [Page 1]
RFC 995                                                    December 1986

Contents

1   Introduction                                                           5

2   Scope and Field of Application                                         6

3   References                                                             7

SECTION ONE. GENERAL                                                       9

4   Definitions                                                            9
    4.1   Reference Model Definitions  . . . . . . . . . . . . . . . . .   9
    4.2   Network Layer Architecture Definitions   . . . . . . . . . . .   9
    4.3   Network Layer Addressing Definitions   . . . . . . . . . . . .   9
    4.4   Local Area Network Definitions   . . . . . . . . . . . . . . .  10
    4.5   Additional Definitions . . . . . . . . . . . . . . . . . . . .  10

5   Symbols and Abbreviations                                             10
    5.1   Data Units   . . . . . . . . . . . . . . . . . . . . . . . . .  10
    5.2   Protocol Data Units  . . . . . . . . . . . . . . . . . . . . .  10
    5.3   Protocol Data Unit Fields  . . . . . . . . . . . . . . . . . .  10
    5.4   Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .  11
    5.5   Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . .  11

6   Overview of the Protocol                                              11
    6.1   Information Provided by the Protocol . . . . . . . . . . . . .  11
    6.2   Subsets of the Protocol. . . . . . . . . . . . . . . . . . . .  12
    6.3   Addressing   . . . . . . . . . . . . . . . . . . . . . . . . .  12
    6.4   Underlying Service Assumed by the Protocol   . . . . . . . . .  12
          6.4.1   Subnetwork Addresses . . . . . . . . . . . . . . . . .  12
          6.4.2   Subnetwork User Data . . . . . . . . . . . . . . . . .  13
    6.5   Service Assumed from Local Environment . . . . . . . . . . . .  13
    6.6   Subnetwork Types . . . . . . . . . . . . . . . . . . . . . . .  14
          6.6.1   Point-to-Point Subnetworks . . . . . . . . . . . . . .  15
          6.6.2   Broadcast Subnetworks  . . . . . . . . . . . . . . . .  15
          6.6.3   General Topology Subnetworks . . . . . . . . . . . . .  16

SECTION TWO. SPECIFICATION OF THE PROTOCOL                                18

7   Protocol Functions                                                    18
    7.1   Protocol Timers  . . . . . . . . . . . . . . . . . . . . . . .  18
          7.1.1   Configuration Timer  . . . . . . . . . . . . . . . . .  18
          7.1.2   Holding Timer  . . . . . . . . . . . . . . . . . . . .  18
    7.2   Report Configuration Function  . . . . . . . . . . . . . . . .  18
          7.2.1   Report Configuration by End Systems  . . . . . . . . .  19
          7.2.2   Report Configuration by Intermediate Systems . . . . .  19
    7.3   Record Configuration Function  . . . . . . . . . . . . . . . .  20
    7.4   Flush Old Configuration Function   . . . . . . . . . . . . . .  20
    7.5   Query Configuration Function . . . . . . . . . . . . . . . . .  20

ISO N4053                                                       [Page 2]
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