SCHC over PPP
draft-thubert-lpwan-schc-over-ppp-00

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LPWAN                                                    P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Updates: 5172 (if approved)                              3 December 2019
Intended status: Standards Track                                        
Expires: 5 June 2020

                             SCHC over PPP
                  draft-thubert-lpwan-schc-over-ppp-00

Abstract

   This document extends RFC 5172 to signal the use of SCHC as the
   compression method between a pair of nodes over PPP.  Combined with
   RFC 2516, this enables the use of SCHC over Ethernet and Wi-Fi.

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
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   This Internet-Draft will expire on 5 June 2020.

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   Copyright (c) 2019 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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   Please review these documents carefully, as they describe your rights
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Extending RFC 5172  . . . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   4
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   4
   8.  Informative References  . . . . . . . . . . . . . . . . . . .   4
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The Point-to-Point Protocol (PPP) [RFC5172] provides a standard
   method of encapsulating network-layer protocol information over
   point-to-point links.  "A Method for Transmitting PPP Over Ethernet
   (PPPoE)" [RFC2516] transports PPP over Ethernet between a pair of
   nodes.  It is compatible with a translating bridge to Wi-Fi, and
   therefore enables PPP over Wi-Fi as well.

   PPP also defines an extensible Link Control Protocol, and proposes a
   family of Network Control Protocols (NCPs) for establishing and
   configuring different network-layer protocols.  "IP Version 6 over
   PPP" [RFC5072] defines the IPv6 Control Protocol (IPV6CP) , which is
   an NCP for a PPP link, and allows for the negotiation of desirable
   parameters for an IPv6 interface over PPP.

   "Negotiation for IPv6 Datagram Compression Using IPv6 Control
   Protocol" [RFC5172] defines the IPv6 datagram compression option that
   can be negotiated by a node on the link through the IPV6CP.  The
   "Static Context Header Compression (SCHC) and fragmentation for
   LPWAN, application to UDP/IPv6" [SCHC] is a compression and
   fragmentation technique that was defined after the publication of
   [RFC5172].  In order to enable SCHC over PPP and therefore Ethernet
   and Wi-Fi, [RFC5172] must be extended to signal SCHC as an additional
   compression method for use over PPP.

2.  BCP 14

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119][RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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3.  Extending RFC 5172

   [RFC5172] defines an IPV6CP option called the IPv6-Compression-
   Protocol Configuration option with a type of 2.  The option contains
   an IPv6-Compression-Protocol field value that indicates a compression
   protocol and an optional data field as shown in Figure 1:
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