Mechanism for Performing Label Switched Path Ping (LSP Ping) over MPLS Tunnels
RFC 6424
| Document | Type |
RFC - Proposed Standard
(November 2011; No errata)
Obsoleted by RFC 8029
Updated by RFC 7537
Updates RFC 4379
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-nitinb-lsp-ping-over-mpls-tunnel | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | WG Document | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6424 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Stewart Bryant | ||
| IESG note | Ross Callon (rcallon@juniper.net) is the document shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) N. Bahadur
Request for Comments: 6424 K. Kompella
Updates: 4379 Juniper Networks, Inc.
Category: Standards Track G. Swallow
ISSN: 2070-1721 Cisco Systems
November 2011
Mechanism for Performing Label Switched Path Ping (LSP Ping)
over MPLS Tunnels
Abstract
This document describes methods for performing LSP ping (specified in
RFC 4379) traceroute over MPLS tunnels and for traceroute of stitched
MPLS Label Switched Paths (LSPs). The techniques outlined in RFC
4379 are insufficient to perform traceroute Forwarding Equivalency
Class (FEC) validation and path discovery for an LSP that goes over
other MPLS tunnels or for a stitched LSP. This document deprecates
the Downstream Mapping TLV (defined in RFC 4379) in favor of a new
TLV that, along with other procedures outlined in this document, can
be used to trace such LSPs.
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/rfc6424.
Bahadur, et al. Standards Track [Page 1]
RFC 6424 LSP Ping over MPLS Tunnels November 2011
Copyright Notice
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Bahadur, et al. Standards Track [Page 2]
RFC 6424 LSP Ping over MPLS Tunnels November 2011
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Conventions Used in This Document . . . . . . . . . . . . 4
2. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Packet Format . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Summary of Changes . . . . . . . . . . . . . . . . . . . . 5
3.2. New Return Codes . . . . . . . . . . . . . . . . . . . . . 6
3.2.1. Return Code per Downstream . . . . . . . . . . . . . . 6
3.2.2. Return Code for Stitched LSPs . . . . . . . . . . . . 6
3.3. Downstream Detailed Mapping TLV . . . . . . . . . . . . . 7
3.3.1. Sub-TLVs . . . . . . . . . . . . . . . . . . . . . . . 9
3.3.1.1. Multipath Data Sub-TLV . . . . . . . . . . . . . . 9
3.4. Deprecation of Downstream Mapping TLV . . . . . . . . . . 13
4. Performing MPLS Traceroute on Tunnels . . . . . . . . . . . . 13
4.1. Transit Node Procedure . . . . . . . . . . . . . . . . . . 13
4.1.1. Addition of a New Tunnel . . . . . . . . . . . . . . . 13
4.1.2. Transition between Tunnels . . . . . . . . . . . . . . 14
4.1.3. Modification to FEC Validation Procedure on Transit . 16
4.2. Modification to FEC Validation Procedure on Egress . . . . 16
4.3. Ingress Node Procedure . . . . . . . . . . . . . . . . . . 17
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