UDP Encapsulation of Stream Control Transmission Protocol (SCTP) Packets for End-Host to End-Host Communication (RFC6951)
Original Publication Date: 2013-May-01
Included in the Prior Art Database: 2013-May-30
Internet Society Requests For Comment (RFCs)
M. Tuexen: AUTHOR [+1]
This document describes a simple method of encapsulating SCTP packets into UDP packets. SCTP, as defined in [RFC4960], runs directly over IPv4 or IPv6. There are two main reasons for encapsulating SCTP packets:
Internet Engineering Task Force (IETF) M. Tuexen Request for Comments: 6951 Muenster Univ. of Appl. Sciences Category: Standards Track R. Stewart ISSN: 2070-1721 Adara Networks May 2013
UDP Encapsulation of Stream Control Transmission Protocol (SCTP) Packets for End-Host to End-Host Communication
This document describes a simple method of encapsulating Stream Control Transmission Protocol (SCTP) packets into UDP packets and its limitations. This allows the usage of SCTP in networks with legacy NATs that do not support SCTP. It can also be used to implement SCTP on hosts without directly accessing the IP layer, for example, implementing it as part of the application without requiring special privileges.
Please note that this document only describes the functionality required within an SCTP stack to add on UDP encapsulation, providing only those mechanisms for two end-hosts to communicate with each other over UDP ports. In particular, it does not provide mechanisms to determine whether UDP encapsulation is being used by the peer, nor the mechanisms for determining which remote UDP port number can be used. These functions are out of scope for this document.
This document covers only end-hosts and not tunneling (egress or ingress) endpoints.
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 5741.
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/rfc6951.
Stewart Standards Track [Page 1]
RFC 6951 UDP Encapsulation of SCTP Packets May 2013
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