MPLS On-Demand Connectivity Verification and Route Tracing
RFC 6426
| Document | Type |
RFC - Proposed Standard
(November 2011; Errata)
Updates RFC 4379
|
|
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Replaces | draft-nitinb-mpls-tp-on-demand-cv | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized with errata bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6426 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Adrian Farrel | ||
| IESG note | Loa Andersson (loa@pi.nu) is the Document Shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) E. Gray
Request for Comments: 6426 Ericsson
Updates: 4379 N. Bahadur
Category: Standards Track Juniper Networks, Inc.
ISSN: 2070-1721 S. Boutros
Cisco Systems, Inc.
R. Aggarwal
November 2011
MPLS On-Demand Connectivity Verification and Route Tracing
Abstract
Label Switched Path Ping (LSP ping) is an existing and widely
deployed Operations, Administration, and Maintenance (OAM) mechanism
for Multi-Protocol Label Switching (MPLS) Label Switched Paths
(LSPs). This document describes extensions to LSP ping so that LSP
ping can be used for on-demand connectivity verification of MPLS
Transport Profile (MPLS-TP) LSPs and pseudowires. This document also
clarifies procedures to be used for processing the related OAM
packets. Further, it describes procedures for using LSP ping to
perform connectivity verification and route tracing functions in
MPLS-TP networks. Finally, this document updates RFC 4379 by adding
a new address type and creating an IANA registry.
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 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6426.
Gray, et al. Standards Track [Page 1]
RFC 6426 MPLS On-Demand Connectivity Verification November 2011
Copyright Notice
Copyright (c) 2011 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Conventions Used in This Document . . . . . . . . . . . . 3
1.2. On-Demand CV for MPLS-TP LSPs Using IP Encapsulation . . . 4
1.3. On-Demand CV for MPLS-TP LSPs Using Non-IP
Encapsulation . . . . . . . . . . . . . . . . . . . . . . 4
2. LSP Ping Extensions . . . . . . . . . . . . . . . . . . . . . 5
2.1. New Address Type for Downstream Mapping TLV . . . . . . . 5
2.1.1. DSMAP/DDMAP Non-IP Address Information . . . . . . . . 5
2.2. Source/Destination Identifier TLV . . . . . . . . . . . . 7
2.2.1. Source/Destination Identifier TLV Format . . . . . . . 7
2.2.2. Source Identifier TLV . . . . . . . . . . . . . . . . 7
2.2.3. Destination Identifier TLV . . . . . . . . . . . . . . 8
2.3. Identifying Statically Provisioned LSPs and PWs . . . . . 8
2.3.1. Static LSP Sub-TLV . . . . . . . . . . . . . . . . . . 9
2.3.2. Static Pseudowire Sub-TLV . . . . . . . . . . . . . . 10
3. Performing On-Demand CV over MPLS-TP LSPs . . . . . . . . . . 10
3.1. LSP Ping with IP Encapsulation . . . . . . . . . . . . . . 11
3.2. On-Demand CV with IP Encapsulation, over ACH . . . . . . . 11
3.3. Non-IP-Based On-Demand CV, Using ACH . . . . . . . . . . . 12
3.4. Reverse-Path Connectivity Verification . . . . . . . . . . 13
3.4.1. Requesting Reverse-Path Connectivity Verification . . 13
3.4.2. Responder Procedures . . . . . . . . . . . . . . . . . 13
3.4.3. Requester Procedures . . . . . . . . . . . . . . . . . 14
3.5. P2MP Considerations . . . . . . . . . . . . . . . . . . . 14
3.6. Management Considerations for Operation with Static
MPLS-TP . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7. Generic Associated Channel Label (GAL) Processing . . . . 14
4. Performing On-Demand Route Tracing over MPLS-TP LSPs . . . . . 15
4.1. On-Demand LSP Route Tracing with IP Encapsulation . . . . 15
Gray, et al. Standards Track [Page 2]
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