Mobility with Traversal Using Relays around NAT (TURN)
RFC 8016
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Type |
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RFC - Proposed Standard
(November 2016; No errata)
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Last updated |
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2016-11-10
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Stream |
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Simon Perreault
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Shepherd write-up |
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Show
(last changed 2016-07-11)
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| IESG |
IESG state |
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RFC 8016 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Spencer Dawkins
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Send notices to |
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"Simon Perreault" <sperreault@jive.com>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) T. Reddy
Request for Comments: 8016 Cisco
Category: Standards Track D. Wing
ISSN: 2070-1721
P. Patil
P. Martinsen
Cisco
November 2016
Mobility with Traversal Using Relays around NAT (TURN)
Abstract
It is desirable to minimize traffic disruption caused by changing IP
address during a mobility event. One mechanism to minimize
disruption is to expose a shorter network path to the mobility event
so that only the local network elements are aware of the changed IP
address and the remote peer is unaware of the changed IP address.
This document provides such an IP address mobility solution using
Traversal Using Relays around NAT (TURN). This is achieved by
allowing a client to retain an allocation on the TURN server when the
IP address of the client changes.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc8016.
Reddy, et al. Standards Track [Page 1]
RFC 8016 Mobility with TURN November 2016
Copyright Notice
Copyright (c) 2016 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
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Notational Conventions . . . . . . . . . . . . . . . . . . . 4
3. Mobility Using TURN . . . . . . . . . . . . . . . . . . . . . 4
3.1. Creating an Allocation . . . . . . . . . . . . . . . . . 5
3.1.1. Sending an Allocate Request . . . . . . . . . . . . . 5
3.1.2. Receiving an Allocate Request . . . . . . . . . . . . 6
3.1.3. Receiving an Allocate Success Response . . . . . . . 6
3.1.4. Receiving an Allocate Error Response . . . . . . . . 7
3.2. Refreshing an Allocation . . . . . . . . . . . . . . . . 7
3.2.1. Sending a Refresh Request . . . . . . . . . . . . . . 7
3.2.2. Receiving a Refresh Request . . . . . . . . . . . . . 7
3.2.3. Receiving a Refresh Response . . . . . . . . . . . . 9
3.3. New STUN Attribute MOBILITY-TICKET . . . . . . . . . . . 9
3.4. New STUN Error Response Code . . . . . . . . . . . . . . 9
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
5. Security Considerations . . . . . . . . . . . . . . . . . . . 9
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1. Normative References . . . . . . . . . . . . . . . . . . 10
6.2. Informative References . . . . . . . . . . . . . . . . . 11
Appendix A. Example of Ticket Construction . . . . . . . . . . . 12
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 13
Reddy, et al. Standards Track [Page 2]
RFC 8016 Mobility with TURN November 2016
1. Introduction
When moving between networks, the endpoint's IP address can change
or, due to NAT, the endpoint's public IP address can change. Such a
change of IP address breaks upper-layer protocols such as TCP and
RTP. Various techniques exist to prevent this breakage, all tied to
making the endpoint's IP address static (e.g., Mobile IP, Proxy
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