ConEx Working Group S. Krishnan
Internet-Draft Ericsson
Intended status: Standards Track M. Kuehlewind
Expires: September 29, 2013 IKR University of Stuttgart
C. Ucendo
Telefonica
March 28, 2013
IPv6 Destination Option for ConEx
draft-ietf-conex-destopt-04
Abstract
ConEx is a mechanism by which senders inform the network about the
congestion encountered by packets earlier in the same flow. This
document specifies an IPv6 destination option that is capable of
carrying ConEx markings in IPv6 datagrams.
Status of this Memo
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This Internet-Draft will expire on September 29, 2013.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions used in this document . . . . . . . . . . . . . . . 3
3. Background . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Requirements for marking IPv6 packets . . . . . . . . . . . . . 4
5. ConEx Destination Option (CDO) . . . . . . . . . . . . . . . . 4
6. Implementation in the fast path of ConEx-aware routers . . . . 6
7. Compatibility with use of IPsec . . . . . . . . . . . . . . . . 7
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 7
9. Security Considerations . . . . . . . . . . . . . . . . . . . . 7
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
11. Normative References . . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 8
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1. Introduction
ConEx [CAM] is a mechanism by which senders inform the network about
the congestion encountered by packets earlier in the same flow. This
document specifies an IPv6 destination option [RFC2460] that can be
used for performing ConEx markings in IPv6 datagrams.
2. Conventions used in this document
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 [RFC2119].
3. Background
The ConEx working group came up with a list of requirements that had
to be met by any marking mechanism. It then considered several
alternative mechanisms and evaluated their suitability for ConEx
marking. There were no mechanisms found that were completely
suitable, but the only mechanism that came close to meeting the
requirements was IPv6 destination options. The analysis of the
different alternatives can be found in [draft-krishnan-conex-ipv6].
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