Path Computation Element Communication Protocol (PCEP) Extensions for Associated Bidirectional Label Switched Paths (LSPs)
draft-ietf-pce-association-bidir-14
Document | Type | Active Internet-Draft (pce WG) | |
---|---|---|---|
Authors | Rakesh Gandhi , Colby Barth , Bin Wen | ||
Last updated | 2021-02-21 | ||
Replaces | draft-barth-pce-association-bidir | ||
Stream | IETF | ||
Intended RFC status | Proposed Standard | ||
Formats | plain text xml pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Dhruv Dhody | ||
Shepherd write-up | Show (last changed 2020-12-17) | ||
IESG | IESG state | Approved-announcement to be sent::AD Followup | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | dd@dhruvdhody.com | ||
IANA | IANA review state | IANA OK - Actions Needed |
PCE Working Group R. Gandhi, Ed. Internet-Draft Cisco Systems, Inc. Intended status: Standards Track C. Barth Expires: August 25, 2021 Juniper Networks B. Wen Comcast February 21, 2021 Path Computation Element Communication Protocol (PCEP) Extensions for Associated Bidirectional Label Switched Paths (LSPs) draft-ietf-pce-association-bidir-14 Abstract This document defines PCEP extensions for grouping two unidirectional MPLS-TE Label Switched Paths (LSPs), one in each direction in the network, into an Associated Bidirectional LSP. These PCEP extensions can be applied using a Stateful PCE for both PCE-Initiated and PCC- Initiated LSPs, as well as when using a Stateless PCE. The PCEP procedures defined are applicable to the LSPs using RSVP-TE for signaling. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on August 25, 2021. Copyright Notice Copyright (c) 2021 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 Gandhi, et al. Expires August 25, 2021 [Page 1] Internet-Draft PCEP for Associated Bidirectional LSP February 2021 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. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Conventions Used in This Document . . . . . . . . . . . . . . 4 2.1. Key Word Definitions . . . . . . . . . . . . . . . . . . 4 2.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4 3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1. Single-sided Initiation . . . . . . . . . . . . . . . . . 5 3.1.1. PCE-Initiated Single-sided Bidirectional LSP . . . . 5 3.1.2. PCC-Initiated Single-sided Bidirectional LSP . . . . 6 3.2. Double-sided Initiation . . . . . . . . . . . . . . . . . 7 3.2.1. PCE-Initiated Double-sided Bidirectional LSP . . . . 7 3.2.2. PCC-Initiated Double-sided Bidirectional LSP . . . . 8 3.3. Co-routed Associated Bidirectional LSP . . . . . . . . . 9 3.4. Summary of PCEP Extensions . . . . . . . . . . . . . . . 9 3.5. Operational Considerations . . . . . . . . . . . . . . . 10 4. Protocol Extensions . . . . . . . . . . . . . . . . . . . . . 11 4.1. ASSOCIATION Object . . . . . . . . . . . . . . . . . . . 11 4.2. Bidirectional LSP Association Group TLV . . . . . . . . . 12 5. PCEP Procedure . . . . . . . . . . . . . . . . . . . . . . . 13 5.1. PCE Initiated LSPs . . . . . . . . . . . . . . . . . . . 14 5.2. PCC Initiated LSPs . . . . . . . . . . . . . . . . . . . 14 5.3. Stateless PCE . . . . . . . . . . . . . . . . . . . . . . 15 5.4. Bidirectional (B) Flag . . . . . . . . . . . . . . . . . 15 5.5. PLSP-ID Usage . . . . . . . . . . . . . . . . . . . . . . 16 5.6. State Synchronization . . . . . . . . . . . . . . . . . . 16 5.7. Error Handling . . . . . . . . . . . . . . . . . . . . . 16 6. Implementation Status . . . . . . . . . . . . . . . . . . . . 17 6.1. Implementation . . . . . . . . . . . . . . . . . . . . . 18 7. Security Considerations . . . . . . . . . . . . . . . . . . . 18 8. Manageability Considerations . . . . . . . . . . . . . . . . 18 8.1. Control of Function and Policy . . . . . . . . . . . . . 18 8.2. Information and Data Models . . . . . . . . . . . . . . . 18Show full document text