Proxy MPLS Echo Request
RFC 7555
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Type |
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RFC - Proposed Standard
(June 2015; Errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-lim-mpls-proxy-lsp-ping
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Stream |
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IETF
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Formats |
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plain text
pdf
html
bibtex
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| Stream |
WG state
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Submitted to IESG for Publication
Jun 2015
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Document shepherd |
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Loa Andersson
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Shepherd write-up |
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Show
(last changed 2014-07-31)
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| IESG |
IESG state |
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RFC 7555 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Deborah Brungard
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) G. Swallow
Request for Comments: 7555 V. Lim
Category: Standards Track Cisco Systems
ISSN: 2070-1721 S. Aldrin
Huawei Technologies
June 2015
Proxy MPLS Echo Request
Abstract
This document defines a means of remotely initiating Multiprotocol
Label Switched Protocol (MPLS) Pings on Label Switched Paths. An
MPLS Proxy Ping Request is sent to any Label Switching Router along a
Label Switched Path. The primary motivations for this facility are
first to limit the number of messages and related processing when
using LSP Ping in large Point-to-Multipoint LSPs, and second to
enable tracing from leaf to leaf (or root).
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/rfc7555.
Copyright Notice
Copyright (c) 2015 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.
Swallow, et al. Standards Track [Page 1]
RFC 7555 Proxy LSP Ping June 2015
Table of Contents
1. Introduction ....................................................3
1.1. Requirements Language ......................................4
1.2. Terminology ................................................5
2. Proxy Ping Overview .............................................5
2.1. Initiating Proxy Ping ......................................6
2.2. Handling at Proxy LSR ......................................6
2.2.1. Backward Compatibility ..............................6
3. Proxy MPLS Echo Request/Reply Procedures ........................7
3.1. Procedures for the Initiator ...............................7
3.2. Procedures for the Proxy LSR ...............................9
3.2.1. Proxy LSR Handling When It Is Egress for FEC .......11
3.2.2. Downstream Detailed Maps and Downstream
Maps in Proxy Reply ................................12
3.2.3. Sending an MPLS Proxy Ping Reply ...................12
3.2.4. Sending the MPLS Echo Requests .....................13
3.2.4.1. Forming the Base MPLS Echo Request ........13
3.2.4.2. Per-Interface Sending Procedures ..........14
4. Proxy Ping Request/Reply Messages ..............................15
4.1. Proxy Ping Request/Reply Message Formats ..................15
4.2. Proxy Ping Request Message Contents .......................15
4.3. Proxy Ping Reply Message Contents .........................16
5. TLV Formats ....................................................16
5.1. Proxy Echo Parameters TLV .................................16
5.1.1. Next Hop Sub-TLV ...................................20
5.2. Reply-to Address TLV ......................................21
5.3. Upstream Neighbor Address TLV .............................21
5.4. Downstream Neighbor Address TLV ...........................22
6. Security Considerations ........................................23
7. IANA Considerations ............................................24
7.1. Proxy Echo Parameters Sub-TLVs ............................24
7.2. Proxy Flags ...............................................25
7.3. Downstream Address Mapping Registry .......................25
7.4. Next Hop Sub-TLV Address Type Registry ....................25
8. References .....................................................26
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