Forwarding and Control Element Separation (ForCES) Protocol Extensions
RFC 7391
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Type |
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RFC - Proposed Standard
(October 2014; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-jhs-forces-protoextenstion
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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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Evangelos Haleplidis
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Shepherd write-up |
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Show
(last changed 2014-07-09)
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| IESG |
IESG state |
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RFC 7391 (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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Adrian Farrel
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Send notices to |
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(None)
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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) J. Hadi Salim
Request for Comments: 7391 Mojatatu Networks
Updates: 5810, 7121 October 2014
Category: Standards Track
ISSN: 2070-1721
Forwarding and Control Element Separation (ForCES) Protocol Extensions
Abstract
Experience in implementing and deploying the Forwarding and Control
Element Separation (ForCES) architecture has demonstrated the need
for a few small extensions both to ease programmability and to
improve wire efficiency of some transactions. The ForCES protocol is
extended with a table range operation and a new extension for error
handling. This document updates the semantics in RFCs 5810 and 7121
to achieve that end goal.
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/rfc7391.
Copyright Notice
Copyright (c) 2014 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.
Hadi Salim Standards Track [Page 1]
RFC 7391 ForCES Protocol Extensions October 2014
Table of Contents
1. Introduction ....................................................2
1.1. Terminology and Conventions ................................3
1.1.1. Requirements Language ...............................3
1.1.2. Terminology .........................................3
2. Problem Overview ................................................4
2.1. Table Ranges ...............................................4
2.2. Error Codes ................................................4
3. Protocol Update .................................................5
3.1. Table Ranges ...............................................5
3.2. Error Codes ................................................6
3.2.1. New Codes ...........................................7
3.2.2. Private Vendor Codes ................................8
3.2.3. Extended Result TLV .................................8
3.2.3.1. Extended Result Backward Compatibility .....9
3.3. Large Table Dumping ........................................9
4. IANA Considerations ............................................11
5. Security Considerations ........................................12
6. References .....................................................12
6.1. Normative References ......................................12
6.2. Informative References ....................................12
Appendix A. New FEPO Version ......................................13
Acknowledgments ...................................................23
Author's Address ..................................................23
1. Introduction
Experience in implementing and deploying the ForCES architecture has
demonstrated the need for a few small extensions both to ease
programmability and to improve wire efficiency of some transactions.
This document describes a few extensions to the semantics in the
ForCES protocol specification [RFC5810] to achieve that end goal.
This document describes and justifies the need for two small
extensions that are backward compatible. This document also
clarifies details of how dumping of a large table residing on an FE
(Forwarding Element) is achieved. To summarize:
1. A table range operation to allow a controller or control
application to request an arbitrary range of table rows is
introduced.
2. Additional error codes returned to the controller (or control
application) by an FE are introduced. Additionally, a new
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