The IPv6 Segment Endpoint Option
draft-bonica-6man-seg-end-opt-00

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Document Type Active Internet-Draft (individual)
Authors Ron Bonica  , Joel Halpern 
Last updated 2019-02-27
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6man                                                           R. Bonica
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                              J. Halpern
Expires: August 31, 2019                                        Ericsson
                                                       February 27, 2019

                    The IPv6 Segment Endpoint Option
                    draft-bonica-6man-seg-end-opt-00

Abstract

   This document defines the IPv6 Segment Endpoint Option.  Source nodes
   can use this option to convey internet-layer information to selected
   segment endpoints along a packet's delivery path.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on August 31, 2019.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   4.  Option Format . . . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Option Processing . . . . . . . . . . . . . . . . . . . . . .   5
   6.  Mutability  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     10.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   IPv6 [RFC8200] options convey optional internet-layer information to
   selected nodes along a packets delivery path.  IPv6 options can be
   encoded as follows:

   o  In a Hop-by-hop Options header.

   o  In a Destination Options header that precedes a Routing header.

   o  In a Destination Options header that precedes an upper-layer
      header.

   If an option is encoded in a Hop-by-hop Options header, it conveys
   information to every node along the packet's delivery path, including
   the destination node.  (See NOTE 1).  If an option is encoded in a
   Destination Options header that precedes a Routing header, it conveys
   information to every segment endpoint along the packet's delivery
   path, including the destination node.  If an option is encoded in a
   Destination Options header that precedes an upper-layer header, it
   conveys information to the destination node only.  (See Section 4.3.4
   of [RFC8200] )

   This document defines the IPv6 Segment Endpoint option.  The IPv6
   Segment Endpoint option provides a mechanism through which a source
   node can convey optional internet-layer information to selected
   segment endpoints.  For example, assume that a packet's delivery path
   contains three segments.  The source node can use the Segment
   Endpoint option to convey one piece of information to the first
   segment endpoint, another piece if information to the second segment
   endpoint, and no information to the third segment endpoint.

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   NOTE 1: As per IPv6 [RFC8200], it is now expected that nodes along a
   packet's delivery path only examine and process the Hop-by-Hop
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