Path Computation Element Communication Protocol (PCEP) Extensions for PCE-Initiated LSP Setup in a Stateful PCE Model
RFC 8281
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Type |
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RFC - Proposed Standard
(December 2017; No errata)
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Last updated |
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2017-12-21
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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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Julien Meuric
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Shepherd write-up |
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Show
(last changed 2017-03-07)
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| IESG |
IESG state |
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RFC 8281 (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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Deborah Brungard
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Send notices to |
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"Julien Meuric" <julien.meuric@orange.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) E. Crabbe
Request for Comments: 8281 Individual Contributor
Category: Standards Track I. Minei
ISSN: 2070-1721 Google, Inc.
S. Sivabalan
Cisco Systems, Inc.
R. Varga
Pantheon Technologies SRO
December 2017
Path Computation Element Communication Protocol (PCEP) Extensions for
PCE-Initiated LSP Setup in a Stateful PCE Model
Abstract
The Path Computation Element Communication Protocol (PCEP) provides
mechanisms for Path Computation Elements (PCEs) to perform path
computations in response to Path Computation Client (PCC) requests.
The extensions for stateful PCE provide active control of
Multiprotocol Label Switching (MPLS) Traffic Engineering Label
Switched Paths (TE LSPs) via PCEP, for a model where the PCC
delegates control over one or more locally configured LSPs to the
PCE. This document describes the creation and deletion of
PCE-initiated LSPs under the stateful PCE model.
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
https://www.rfc-editor.org/info/rfc8281.
Crabbe, et al. Standards Track [Page 1]
RFC 8281 PCE-Initiated LSPs in Stateful PCE December 2017
Copyright Notice
Copyright (c) 2017 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
(https://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.
Crabbe, et al. Standards Track [Page 2]
RFC 8281 PCE-Initiated LSPs in Stateful PCE December 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
3. Architectural Overview . . . . . . . . . . . . . . . . . . . 5
3.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . 5
3.2. Operation Overview . . . . . . . . . . . . . . . . . . . 6
4. Support of PCE-Initiated LSPs . . . . . . . . . . . . . . . . 7
4.1. STATEFUL-PCE-CAPABILITY TLV . . . . . . . . . . . . . . . 8
5. PCE-Initiated LSP Instantiation and Deletion . . . . . . . . 8
5.1. The LSP Initiate Request . . . . . . . . . . . . . . . . 8
5.2. The R Flag in the SRP Object . . . . . . . . . . . . . . 10
5.3. LSP Instantiation . . . . . . . . . . . . . . . . . . . . 10
5.3.1. The Create Flag . . . . . . . . . . . . . . . . . . . 12
5.3.2. The SPEAKER-ENTITY-ID TLV . . . . . . . . . . . . . . 13
5.4. LSP Deletion . . . . . . . . . . . . . . . . . . . . . . 13
6. LSP Delegation and Cleanup . . . . . . . . . . . . . . . . . 14
7. LSP State Synchronization . . . . . . . . . . . . . . . . . . 15
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8.1. PCEP Messages . . . . . . . . . . . . . . . . . . . . . . 15
8.2. LSP Object . . . . . . . . . . . . . . . . . . . . . . . 15
8.3. SRP object . . . . . . . . . . . . . . . . . . . . . . . 16
8.4. STATEFUL-PCE-CAPABILITY TLV . . . . . . . . . . . . . . . 16
8.5. PCEP-Error Object . . . . . . . . . . . . . . . . . . . . 17
9. Security Considerations . . . . . . . . . . . . . . . . . . . 18
9.1. Malicious PCE . . . . . . . . . . . . . . . . . . . . . . 18
9.2. Malicious PCC . . . . . . . . . . . . . . . . . . . . . . 18
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
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