Application-Initiated Check-Pointing via the Port Control Protocol (PCP)
RFC 7767
| Document | Type |
RFC - Informational
(February 2016; No errata)
Was draft-vinapamula-flow-ha (individual)
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Stream | ISE | ||
| Formats | plain text html pdf htmlized bibtex | ||
| IETF conflict review | conflict-review-vinapamula-flow-ha | ||
| Stream | ISE state | Published RFC | |
| Consensus Boilerplate | Unknown | ||
| Document shepherd | Adrian Farrel | ||
| Shepherd write-up | Show (last changed 2015-10-18) | ||
| IESG | IESG state | RFC 7767 (Informational) | |
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
| IANA | IANA review state | IANA OK - Actions Needed | |
| IANA action state | RFC-Ed-Ack | ||
Independent Submission S. Vinapamula
Request for Comments: 7767 Juniper Networks
Category: Informational S. Sivakumar
ISSN: 2070-1721 Cisco Systems
M. Boucadair
Orange
T. Reddy
Cisco
February 2016
Application-Initiated Check-Pointing via the Port Control Protocol (PCP)
Abstract
This document specifies a mechanism for a host to indicate via the
Port Control Protocol (PCP) which connections should be protected
against network failures. These connections will then be subject to
high-availability mechanisms enabled on the network side.
This approach assumes that applications and/or users have more
visibility about sensitive connections than any heuristic that can be
enabled on the network side to guess which connections should be
check-pointed.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This is a contribution to the RFC Series, independently of any other
RFC stream. The RFC Editor has chosen to publish this document at
its discretion and makes no statement about its value for
implementation or deployment. Documents approved for publication by
the RFC Editor are not a candidate for any level of Internet
Standard; see 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/rfc7767.
Vinapamula, et al. Informational [Page 1]
RFC 7767 HA through PCP February 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Note . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Issues with the Existing Implementations . . . . . . . . . . 4
3. CHECKPOINT_REQUIRED PCP Option . . . . . . . . . . . . . . . 4
3.1. Format . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2. Operation . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Sample Use Cases . . . . . . . . . . . . . . . . . . . . . . 7
5. Security Considerations . . . . . . . . . . . . . . . . . . . 8
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1. Normative References . . . . . . . . . . . . . . . . . . 9
7.2. Informative References . . . . . . . . . . . . . . . . . 9
Appendix A. Additional Considerations . . . . . . . . . . . . . 11
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction
The risk of Internet service disruption is critical in service
providers and enterprise networking environments. Such a risk is
often mitigated with the introduction of active/backup systems. Such
designs not only contribute to minimize the risk of service
disruption, but also facilitate maintenance operations (e.g., hitless
hardware or software upgrades).
In addition, the nature of some connections leads to the
establishment and the maintenance of connection-specific states by
some of the network functions invoked when the connection is
established. During active/backup failover in case of a network
failure, the said states need to be check-pointed by the backup
system. Additional issues are discussed in Section 2.
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RFC 7767 HA through PCP February 2016
Heuristics based on the protocol, mapping lifetime, etc., are used in
the network to elect which connections need to be check-pointed
(e.g., by means of high-availability (HA) techniques). This document
advocates for an application-initiated approach that would allow
applications and/or users to signal to the network which of their
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