Processing of the Hop-by-Hop Options Header
draft-peng-v6ops-hbh-02

Document Type Active Internet-Draft (individual)
Authors Shuping Peng  , Zhenbin Li  , Chongfeng Xie  , Zhuangzhuang Qin  , Gyan Mishra 
Last updated 2020-12-01
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Network Working Group                                            S. Peng
Internet-Draft                                                     Z. Li
Intended status: Informational                       Huawei Technologies
Expires: June 4, 2021                                             C. Xie
                                                           China Telecom
                                                                  Z. Qin
                                                            China Unicom
                                                               G. Mishra
                                                            Verizon Inc.
                                                        December 1, 2020

              Processing of the Hop-by-Hop Options Header
                        draft-peng-v6ops-hbh-02

Abstract

   This document describes the processing of the Hop-by-Hop Options
   Header in today's routers in the aspects of standards specification,
   common implementations, and default operations.  This document
   outlines the reasons why the Hop-by-Hop Options Header is rarely
   utilized in current networks.  In addition, this document describes
   how the HBH could be used as a powerful mechanism allowing deployment
   and operations of new services requiring a more optimized way to
   leverage network resources of an infrastructure.  The Hop-by-Hop
   Options Header is taken into consideration by several network
   operators, as a valuable container for carrying the information
   facilitating the introduction of new services.  The desired, and
   proposed, processing behavior of the HBH and the migration strategies
   towards it are also suggested.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

Peng, et al.              Expires June 4, 2021                  [Page 1]
Internet-Draft           Processing HBH Opt Hdr            December 2020

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 4, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Modern Router Architecture  . . . . . . . . . . . . . . . . .   3
   3.  Specification of RFC8200  . . . . . . . . . . . . . . . . . .   4
   4.  Common Implementations  . . . . . . . . . . . . . . . . . . .   5
     4.1.  Historical Reasons  . . . . . . . . . . . . . . . . . . .   6
     4.2.  Consequences  . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Operators' typical processing . . . . . . . . . . . . . . . .   6
   6.  New Services  . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  The desired processing behavior . . . . . . . . . . . . . . .   7
   8.  Migration strategies  . . . . . . . . . . . . . . . . . . . .   8
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     12.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     12.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Due to the historical reasons, such as incapable ASICs, limited IPv6
   deployments and few service requirements, the most common
   implementation on the processing of the Hop-by-Hop Options header
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