SCHC over PPP
draft-thubert-lpwan-schc-over-ppp-00
The information below is for an old version of the document.
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
|
|
|---|---|---|---|
| Author | Pascal Thubert | ||
| Last updated | 2019-12-03 | ||
| Replaced by | draft-thubert-intarea-schc-over-ppp | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | I-D Exists | |
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draft-thubert-lpwan-schc-over-ppp-00
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.
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This Internet-Draft will expire on 5 June 2020.
Copyright Notice
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:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | IPv6-Compression-Protocol |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Data ...
+-+-+-+-+
Figure 1: The IPv6-Compression-Protocol Configuration Option
This specification indicates a new IPv6-Compression-Protocol field
value for [SCHC] (see Section 5, and enables to transport a Uniform
Resource Identifier (URI) [RFC3986] of the set of rules in the
optional data. The default format for the set of rules is YANG using
the "Data Model for SCHC" [SCHC_DATA_MODEL] encoded in JSON as
specified in [RFC7951]. If the encoding is asymetrical, the
initiator of the session is considered downstream, playing the role
of the device in an LPWAN network.
4. Security Considerations
This draft enables to use the SCHC compression and fragmentation over
PPP and therefore Ethernet and Wi-Fi with PPPoE. It inherits the
possible threats against SCHC listed in the "Security considerations"
section of [SCHC].
5. IANA Considerations
This document requests the allocation of a new value in the registry
"IPv6-Compression-Protocol Types" for "SCHC". A suggested value is
proposed in Table 1:
+-------+------------------------------------------+---------------+
| Value | Description | Reference |
+=======+==========================================+===============+
| 4 | Static Context Header Compression (SCHC) | This document |
+-------+------------------------------------------+---------------+
Table 1: IP Header Compression Configuration Option Suboption Types
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6. Acknowledgments
7. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC2516] Mamakos, L., Lidl, K., Evarts, J., Carrel, D., Simone, D.,
and R. Wheeler, "A Method for Transmitting PPP Over
Ethernet (PPPoE)", RFC 2516, DOI 10.17487/RFC2516,
February 1999, <https://www.rfc-editor.org/info/rfc2516>.
[RFC5072] Varada, S., Ed., Haskins, D., and E. Allen, "IP Version 6
over PPP", RFC 5072, DOI 10.17487/RFC5072, September 2007,
<https://www.rfc-editor.org/info/rfc5072>.
[RFC5172] Varada, S., Ed., "Negotiation for IPv6 Datagram
Compression Using IPv6 Control Protocol", RFC 5172,
DOI 10.17487/RFC5172, March 2008,
<https://www.rfc-editor.org/info/rfc5172>.
[RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifier (URI): Generic Syntax", STD 66,
RFC 3986, DOI 10.17487/RFC3986, January 2005,
<https://www.rfc-editor.org/info/rfc3986>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[SCHC] Minaburo, A., Toutain, L., Gomez, C., Barthel, D., and J.
Zuniga, "Static Context Header Compression (SCHC) and
fragmentation for LPWAN, application to UDP/IPv6", Work in
Progress, Internet-Draft, draft-ietf-lpwan-ipv6-static-
context-hc-23, 28 November 2019,
<https://tools.ietf.org/html/draft-ietf-lpwan-ipv6-static-
context-hc-23>.
8. Informative References
[SCHC_DATA_MODEL]
Minaburo, A. and L. Toutain, "Data Model for Static
Context Header Compression (SCHC)", Work in Progress,
Internet-Draft, draft-ietf-lpwan-schc-yang-data-model-00,
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23 April 2019, <https://tools.ietf.org/html/draft-ietf-
lpwan-schc-yang-data-model-00>.
[RFC7951] Lhotka, L., "JSON Encoding of Data Modeled with YANG",
RFC 7951, DOI 10.17487/RFC7951, August 2016,
<https://www.rfc-editor.org/info/rfc7951>.
Author's Address
Pascal Thubert (editor)
Cisco Systems, Inc
Building D, 45 Allee des Ormes - BP1200
06254 Mougins - Sophia Antipolis
France
Phone: +33 497 23 26 34
Email: pthubert@cisco.com
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