Negotiation for IPv6 Datagram Compression Using IPv6 Control Protocol
RFC 5172
| Document | Type |
RFC - Proposed Standard
(March 2008; No errata)
Obsoletes RFC 2472
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|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5172 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Jari Arkko | ||
| Send notices to | (None) | ||
Network Working Group S. Varada, Ed. Request for Comments: 5172 Transwitch Obsoletes: 2472 March 2008 Category: Standards Track Negotiation for IPv6 Datagram Compression Using IPv6 Control Protocol Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract The Point-to-Point Protocol (PPP) provides a standard method of encapsulating network-layer protocol information over point-to-point links. 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. The IPv6 Control Protocol (IPV6CP), which is an NCP for a PPP link, allows for the negotiation of desirable parameters for an IPv6 interface over PPP. This document defines the IPv6 datagram compression option that can be negotiated by a node on the link through the IPV6CP. Table of Contents 1. Introduction ....................................................2 1.1. Specification of Requirements ..............................2 2. IPV6CP Configuration Options ....................................3 2.1. IPv6-Compression-Protocol ..................................3 3. Security Considerations .........................................4 4. IANA Considerations .............................................5 5. Management Considerations .......................................5 6. Acknowledgments .................................................5 7. References ......................................................5 7.1. Normative References .......................................5 7.2. Informative References .....................................6 Varada Standards Track [Page 1] RFC 5172 IPv6 Datagram Compression March 2008 1. Introduction PPP [1] has three main components: 1) A method for encapsulating datagrams over serial links. 2) A Link Control Protocol (LCP) for establishing, configuring, and testing the data-link connection. 3) A family of Network Control Protocols (NCPs) for establishing and configuring different network-layer protocols. In order to establish communications over a point-to-point link, each end of the PPP link must first send LCP packets to configure and test the data link. After the link has been established and optional facilities have been negotiated as needed by the LCP, PPP must send NCP packets to choose and configure one or more network-layer protocols. Once each of the chosen network-layer protocols has been configured, datagrams from each network-layer protocol can be sent over the link. The link will remain configured for communications until explicit LCP or NCP packets close the link down, or until some external event occurs (power failure at the other end, carrier drop, etc.). In the IPv6 over PPP specification [2], the NCP, or IPV6CP, for establishing and configuring IPv6 over PPP is defined. The same specification defines the Interface Identifier parameter, which can be used to generate link-local and globally unique IPv6 addresses, for negotiation. In this specification, the compression parameter for use in IPv6 datagram compression is defined. Together with RFC 5072 [2], this document obsoletes RFC 2472 [13]. However, no protocol changes have been introduced over RFC 2472. 1.1. Specification of Requirements In this document, several words are used to signify the requirements of the specification. 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 [3]. Varada Standards Track [Page 2] RFC 5172 IPv6 Datagram Compression March 2008 2. IPV6CP Configuration Options IPV6CP Configuration Options allow negotiation of desirable IPv6 parameters. IPV6CP uses the same Configuration Option format as defined for LCP [1] but with a separate set of Options. If aShow full document text