A Forward-Search P2P TE LSP Inter-Domain Path Computation
draft-chen-pce-forward-search-p2p-path-computation-20
|
Document |
Type |
|
Active Internet-Draft (individual)
|
|
Author |
|
Huaimo Chen
|
|
Last updated |
|
2021-01-06
|
|
Stream |
|
(None)
|
|
Intended RFC status |
|
(None)
|
|
Formats |
|
plain text
xml
pdf
htmlized (tools)
htmlized
bibtex
|
Stream |
Stream state |
|
(No stream defined) |
|
Consensus Boilerplate |
|
Unknown
|
|
RFC Editor Note |
|
(None)
|
IESG |
IESG state |
|
I-D Exists
|
|
Telechat date |
|
|
|
Responsible AD |
|
(None)
|
|
Send notices to |
|
(None)
|
PCE Working Group H. Chen
Internet-Draft Futurewei
Intended status: Standards Track January 6, 2021
Expires: July 10, 2021
A Forward-Search P2P TE LSP Inter-Domain Path Computation
draft-chen-pce-forward-search-p2p-path-computation-20
Abstract
This document presents a forward search procedure for computing paths
for Point-to-Point (P2P) Traffic Engineering (TE) Label Switched
Paths (LSPs) crossing a number of domains using multiple Path
Computation Elements (PCEs). In addition, extensions to the Path
Computation Element Communication Protocol (PCEP) for supporting the
forward search procedure are described.
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 July 10, 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
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
Chen Expires July 10, 2021 [Page 1]
Internet-Draft Forward Search P2P Path January 2021
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Conventions Used in This Document . . . . . . . . . . . . . . 4
4. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Forward Search Path Computation . . . . . . . . . . . . . . . 5
5.1. Overview of Procedure . . . . . . . . . . . . . . . . . . 5
5.2. Description of Procedure . . . . . . . . . . . . . . . . 5
5.3. Processing Request and Reply Messages . . . . . . . . . . 8
6. Comparing to BRPC . . . . . . . . . . . . . . . . . . . . . . 9
7. Extensions to PCEP . . . . . . . . . . . . . . . . . . . . . 9
7.1. RP Object Extension . . . . . . . . . . . . . . . . . . . 9
7.2. NODE-FLAGS Object . . . . . . . . . . . . . . . . . . . . 10
7.2.1. PREVIOUS-NODE TLV . . . . . . . . . . . . . . . . . . 11
7.2.2. DOMAIN-ID TLV . . . . . . . . . . . . . . . . . . . . 11
7.2.3. PCE-ID TLV . . . . . . . . . . . . . . . . . . . . . 12
7.3. Candidate Node List . . . . . . . . . . . . . . . . . . . 13
7.4. Result Path List . . . . . . . . . . . . . . . . . . . . 14
7.5. Request Message Extension . . . . . . . . . . . . . . . . 14
7.6. Reply Message Extension . . . . . . . . . . . . . . . . . 15
8. Suggestion to improve performance . . . . . . . . . . . . . . 15
9. Manageability Considerations . . . . . . . . . . . . . . . . 15
9.1. Control of Function and Policy . . . . . . . . . . . . . 15
9.2. Information and Data Models . . . . . . . . . . . . . . . 15
9.3. Liveness Detection and Monitoring . . . . . . . . . . . . 15
9.4. Verify Correct Operations . . . . . . . . . . . . . . . . 15
9.5. Requirements On Other Protocols . . . . . . . . . . . . . 16
9.6. Impact On Network Operations . . . . . . . . . . . . . . 16
10. Security Considerations . . . . . . . . . . . . . . . . . . . 16
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
11.1. Request Parameter Bit Flags . . . . . . . . . . . . . . 16
11.2. New PCEP Object . . . . . . . . . . . . . . . . . . . . 16
11.2.1. NODE-FLAGS Object . . . . . . . . . . . . . . . . . 16
11.3. New PCEP TLV . . . . . . . . . . . . . . . . . . . . . . 17
11.3.1. DOMAIN-ID TLV . . . . . . . . . . . . . . . . . . . 17
12. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 17
13. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
13.1. Normative References . . . . . . . . . . . . . . . . . . 18
Show full document text