PCEPS: Usage of TLS to Provide a Secure Transport for the Path Computation Element Communication Protocol (PCEP)
RFC 8253

Document Type RFC - Proposed Standard (October 2017; Errata)
Updates RFC 5440
Last updated 2017-11-06
Replaces draft-lopez-pce-pceps
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Cyril Margaria
Shepherd write-up Show (last changed 2017-04-24)
IESG IESG state RFC 8253 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Deborah Brungard
Send notices to Cyril Margaria <cmargaria@juniper.net>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                          D. Lopez
Request for Comments: 8253                           O. Gonzalez de Dios
Updates: 5440                                             Telefonica I+D
Category: Standards Track                                          Q. Wu
ISSN: 2070-1721                                                 D. Dhody
                                                                  Huawei
                                                            October 2017

       PCEPS: Usage of TLS to Provide a Secure Transport for the
         Path Computation Element Communication Protocol (PCEP)

Abstract

   The Path Computation Element Communication Protocol (PCEP) defines
   the mechanisms for the communication between a Path Computation
   Client (PCC) and a Path Computation Element (PCE), or among PCEs.
   This document describes PCEPS -- the usage of Transport Layer
   Security (TLS) to provide a secure transport for PCEP.  The
   additional security mechanisms are provided by the transport protocol
   supporting PCEP; therefore, they do not affect the flexibility and
   extensibility of PCEP.

   This document updates RFC 5440 in regards to the PCEP initialization
   phase procedures.

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/rfc8253.

Lopez, et al.                Standards Track                    [Page 1]
RFC 8253                          PCEPS                     October 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
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   publication of this document.  Please review these documents
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   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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Lopez, et al.                Standards Track                    [Page 2]
RFC 8253                          PCEPS                     October 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   5
   3.  Applying PCEPS  . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Initiating TLS Procedures . . . . . . . . . . . . . . . .   5
     3.3.  The StartTLS Message  . . . . . . . . . . . . . . . . . .   8
     3.4.  TLS Connection Establishment  . . . . . . . . . . . . . .  13
     3.5.  Peer Identity . . . . . . . . . . . . . . . . . . . . . .  15
     3.6.  Connection Establishment Failure  . . . . . . . . . . . .  16
   4.  Discovery Mechanisms  . . . . . . . . . . . . . . . . . . . .  16
     4.1.  DANE Applicability  . . . . . . . . . . . . . . . . . . .  17
   5.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .  17
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
     6.1.  New PCEP Message  . . . . . . . . . . . . . . . . . . . .  18
     6.2.  New Error-Values  . . . . . . . . . . . . . . . . . . . .  19
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  19
   8.  Manageability Considerations  . . . . . . . . . . . . . . . .  20
     8.1.  Control of Function and Policy  . . . . . . . . . . . . .  20
     8.2.  Information and Data Models . . . . . . . . . . . . . . .  21
     8.3.  Liveness Detection and Monitoring . . . . . . . . . . . .  21
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