Addressing Requirements and Design Considerations for Per-Interface Maintenance Entity Group Intermediate Points (MIPs)
RFC 7054
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RFC - Informational
(November 2013; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-farrel-mpls-tp-mip-mep-map
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IETF
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plain text
pdf
html
bibtex
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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 2013-04-22)
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IESG state |
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RFC 7054 (Informational)
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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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Stewart Bryant
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IESG note |
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Assigned to Stewart as Adrian is a co-author
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Send notices to |
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(None)
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IANA review state |
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IANA OK - No Actions Needed
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IANA action state |
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No IC
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Internet Engineering Task Force (IETF) A. Farrel
Request for Comments: 7054 Juniper Networks
Category: Informational H. Endo
ISSN: 2070-1721 Hitachi, Ltd.
R. Winter
NEC
Y. Koike
NTT
M. Paul
Deutsche Telekom
November 2013
Addressing Requirements and Design Considerations for
Per-Interface Maintenance Entity Group Intermediate Points (MIPs)
Abstract
The framework for Operations, Administration and Maintenance (OAM)
within the MPLS Transport Profile (MPLS-TP) describes how the
Maintenance Entity Group Intermediate Points (MIPs) may be situated
within network nodes at incoming and outgoing interfaces.
This document elaborates on important considerations for internal MIP
addressing. More precisely, it describes important restrictions for
any mechanism that specifies a way of forming OAM messages so that
they can be targeted at MIPs on either incoming or outgoing
interfaces and forwarded correctly through the forwarding engine.
Furthermore, the document includes considerations for node
implementations where there is no distinction between the incoming
and outgoing MIP.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see 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/rfc7054.
Farrel, et al. Informational [Page 1]
RFC 7054 Internal MIP Considerations November 2013
Copyright Notice
Copyright (c) 2013 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 ....................................................2
2. Terminology .....................................................3
3. Summary of the Problem Statement ................................3
4. Requirements and Design Considerations for Internal-MIP
Addressing ......................................................6
5. Security Considerations ........................................10
6. Acknowledgments ................................................10
7. References .....................................................10
7.1. Normative References ......................................10
7.2. Informative References ....................................11
1. Introduction
The framework for Operations, Administration and Maintenance (OAM)
within the MPLS Transport Profile (MPLS-TP)(the MPLS-TP OAM
Framework, [RFC6371]) distinguishes two configurations for the
Maintenance Entity Group Intermediate Points (MIPs) on a node. It
defines per-node MIPs and per-interface MIPs, where a per-node MIP is
a single MIP per node in an unspecified location within the node and
per-interface MIPs are two (or more) MIPs per node on each side of
the forwarding engine.
In-band OAM messages are sent using the Generic Associated Channel
(G-ACh) [RFC5586]. OAM messages for the transit points of
pseudowires (PWs) or Label Switched Paths (LSPs) are delivered using
the expiration of the MPLS shim header Time-to-Live (TTL) field. OAM
messages for the end points of PWs and LSPs are simply delivered as
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