Host Identity Protocol (HIP) Rendezvous Extension
RFC 5204
| Document | Type |
RFC - Experimental
(April 2008; No errata)
Was draft-ietf-hip-rvs (hip WG)
|
|
|---|---|---|---|
| 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 5204 (Experimental) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Mark Townsley | ||
| Send notices to | (None) | ||
Network Working Group J. Laganier
Request for Comments: 5204 DoCoMo Euro-Labs
Category: Experimental L. Eggert
Nokia
April 2008
Host Identity Protocol (HIP) Rendezvous Extension
Status of This Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Abstract
This document defines a rendezvous extension for the Host Identity
Protocol (HIP). The rendezvous extension extends HIP and the HIP
registration extension for initiating communication between HIP nodes
via HIP rendezvous servers. Rendezvous servers improve reachability
and operation when HIP nodes are multi-homed or mobile.
Laganier & Eggert Experimental [Page 1]
RFC 5204 HIP Rendezvous Extension April 2008
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Overview of Rendezvous Server Operation . . . . . . . . . . . 4
3.1. Diagram Notation . . . . . . . . . . . . . . . . . . . . . 5
3.2. Rendezvous Client Registration . . . . . . . . . . . . . . 6
3.3. Relaying the Base Exchange . . . . . . . . . . . . . . . . 6
4. Rendezvous Server Extensions . . . . . . . . . . . . . . . . . 7
4.1. RENDEZVOUS Registration Type . . . . . . . . . . . . . . . 7
4.2. Parameter Formats and Processing . . . . . . . . . . . . . 8
4.2.1. RVS_HMAC Parameter . . . . . . . . . . . . . . . . . . 8
4.2.2. FROM Parameter . . . . . . . . . . . . . . . . . . . . 9
4.2.3. VIA_RVS Parameter . . . . . . . . . . . . . . . . . . 10
4.3. Modified Packets Processing . . . . . . . . . . . . . . . 10
4.3.1. Processing Outgoing I1 Packets . . . . . . . . . . . . 10
4.3.2. Processing Incoming I1 Packets . . . . . . . . . . . . 11
4.3.3. Processing Outgoing R1 Packets . . . . . . . . . . . . 11
4.3.4. Processing Incoming R1 Packets . . . . . . . . . . . . 11
5. Security Considerations . . . . . . . . . . . . . . . . . . . 12
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 13
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.1. Normative References . . . . . . . . . . . . . . . . . . . 13
8.2. Informative References . . . . . . . . . . . . . . . . . . 14
Laganier & Eggert Experimental [Page 2]
RFC 5204 HIP Rendezvous Extension April 2008
1. Introduction
The Host Identity Protocol (HIP) Architecture [RFC4423] introduces
the rendezvous mechanism to help a HIP node to contact a frequently
moving HIP node. The rendezvous mechanism involves a third party,
the rendezvous server (RVS), which serves as an initial contact point
("rendezvous point") for its clients. The clients of an RVS are HIP
nodes that use the HIP Registration Extension [RFC5203] to register
their HIT->IP address mappings with the RVS. After this
registration, other HIP nodes can initiate a base exchange using the
IP address of the RVS instead of the current IP address of the node
they attempt to contact. Essentially, the clients of an RVS become
reachable at the RVS's IP address. Peers can initiate a HIP base
exchange with the IP address of the RVS, which will relay this
initial communication such that the base exchange may successfully
complete.
2. Terminology
This section defines terms used throughout the remainder of this
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 RFC 2119 [RFC2119].
In addition to the terminology defined in the HIP specification
[RFC5201] and the HIP Registration Extension [RFC5203], this document
defines and uses the following terms:
Rendezvous Service
A HIP service provided by a rendezvous server to its rendezvous
clients. The rendezvous server offers to relay some of the
arriving base exchange packets between the initiator and
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