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.
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Task Force (IETF). Note that other groups may also distribute
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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
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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 . . . . . . . . . . . . . . . 18
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