MPLS On-Demand Connectivity Verification and Route Tracing
RFC 6426
Document | Type |
RFC - Proposed Standard
(November 2011; Errata)
Updates RFC 4379
|
|
---|---|---|---|
Authors | Rahul Aggarwal , Eric Gray , Nitin Bahadur , Sami Boutros | ||
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 Provisions Relating to IETF Documents (http://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 the Trust Legal Provisions and are provided without warranty as 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]Show full document text