UDP Return Path for Packet Loss and Delay Measurement for MPLS Networks
RFC 7876
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Type |
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RFC - Proposed Standard
(July 2016; No errata)
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Last updated |
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2016-07-26
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Replaces |
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draft-ietf-mpls-pm-udp-return
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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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Reviews |
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WG state
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Submitted to IESG for Publication
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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 2015-10-21)
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| IESG |
IESG state |
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RFC 7876 (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) S. Bryant
Request for Comments: 7876 Independent
Category: Standards Track S. Sivabalan
ISSN: 2070-1721 S. Soni
Cisco Systems
July 2016
UDP Return Path for Packet Loss and Delay Measurement for MPLS Networks
Abstract
RFC 6374 defines a protocol for Packet Loss and Delay Measurement for
MPLS networks (MPLS-PLDM). This document specifies the procedures to
be used when sending and processing out-of-band MPLS performance
management Responses over an UDP/IP return path.
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 7841.
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/rfc7876.
Copyright Notice
Copyright (c) 2016 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.
Bryant, et al. Standards Track [Page 1]
RFC 7876 UDP Return Path for MPLS-PLDM July 2016
Table of Contents
1. Introduction ....................................................3
2. Requirements Language ...........................................3
3. Solution Overview ...............................................3
3.1. UDP Return Object ..........................................4
4. Theory of Operation .............................................5
4.1. Sending an MPLS-PLDM Query .................................5
4.2. Receiving an MPLS-PLDM Query Request .......................5
4.3. Sending an MPLS-PLDM Response ..............................6
4.4. Receiving an MPLS-PLDM Response ............................7
5. Congestion Considerations .......................................7
6. Manageability Considerations ....................................8
7. Security Considerations .........................................8
8. IANA Considerations .............................................8
9. References ......................................................9
9.1. Normative References .......................................9
9.2. Informative References .....................................9
Acknowledgements ..................................................10
Authors' Addresses ................................................10
Bryant, et al. Standards Track [Page 2]
RFC 7876 UDP Return Path for MPLS-PLDM July 2016
1. Introduction
This document describes how MPLS-PLDM [RFC6374] out-of-band Responses
can be delivered to the querier using UDP/IP.
The use of UDP may be required to support data-path management such
as passage through firewalls or to provide the necessary multiplexing
needed in bistatic operation where the querier and the collector are
not co-located and the collector is gathering the Response
information for a number of responders. In a highly scaled system,
some MPLS-PLDM sessions may be off-loaded to a specific node within
the distributed system that comprises the Label Switching Router
(LSR) as a whole. In such systems, the Response may arrive via any
interface in the LSR and needs to be forwarded internally to the
processor tasked with handling the particular MPLS-PLDM measurement.
Currently, the MPLS-PLDM protocol does not have any mechanism to
deliver the PLDM Response message to a particular node within a
multi-CPU LSR.
The procedure described in this specification describes how the
querier requests delivery of the MPLS-PLDM Response over IP to a
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