Architecture of an IP/MPLS Network with Hardened Pipes
RFC 7625
| Document | Type |
RFC - Informational
(August 2015; No errata)
Was draft-hao-mpls-ip-hard-pipe (individual)
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Stream | ISE | ||
| Formats | plain text html pdf htmlized bibtex | ||
| IETF conflict review | conflict-review-hao-mpls-ip-hard-pipe | ||
| Stream | ISE state | Published RFC | |
| Consensus Boilerplate | Unknown | ||
| Document shepherd | Adrian Farrel | ||
| Shepherd write-up | Show (last changed 2015-05-25) | ||
| IESG | IESG state | RFC 7625 (Informational) | |
| Telechat date | |||
| Responsible AD | Deborah Brungard | ||
| Send notices to | (None) | ||
| IANA | IANA review state | IANA OK - No Actions Needed | |
| IANA action state | No IANA Actions | ||
Independent Submission J. T. Hao
Request for Comments: 7625 Huawei Technologies Co., Ltd
Category: Informational P. Maheshwari
ISSN: 2070-1721 Bharti Airtel, Ltd.
R. Huang
L. Andersson
M. Chen
Huawei Technologies Co., Ltd
August 2015
Architecture of an IP/MPLS Network with Hardened Pipes
Abstract
This document describes an IP/MPLS network that has an infrastructure
that can be separated into two or more strata. For the
implementation described in this document, the infrastructure has
been separated into two strata: one for the "Hard Pipes", called the
"Hard Pipe Stratum", and one for the normal IP/MPLS traffic, called
the "Normal IP/MPLS Stratum".
This document introduces the concept of a Hard Pipe -- an MPLS Label
Switched Path (LSP) or a pseudowire (PW) with a bandwidth that is
guaranteed and can neither be exceeded nor infringed upon.
The Hard Pipe stratum does not use statistical multiplexing; for the
LSPs and PWs set up within this stratum, the bandwidth is guaranteed
end to end.
The document does not specify any new protocol or procedures. It
does explain how the MPLS standards implementation has been deployed
and operated to meet the requirements from operators that offer
traditional Virtual Leased Line (VLL) services.
Hao, et al. Informational [Page 1]
RFC 7625 Hard IP Pipes August 2015
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This is a contribution to the RFC Series, independently of any other
RFC stream. The RFC Editor has chosen to publish this document at
its discretion and makes no statement about its value for
implementation or deployment. Documents approved for publication by
the RFC Editor are not 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/rfc7625.
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.
Hao, et al. Informational [Page 2]
RFC 7625 Hard IP Pipes August 2015
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 4
2. The Stratified Network . . . . . . . . . . . . . . . . . . . 5
2.1. The Physical Network . . . . . . . . . . . . . . . . . . 6
2.2. The Hard Pipe Stratum . . . . . . . . . . . . . . . . . . 6
2.3. The Normal IP/MPLS Stratum . . . . . . . . . . . . . . . 7
2.4. Stratum Networks . . . . . . . . . . . . . . . . . . . . 7
3. Configuring the Leased Lines in the Hard Pipe Stratum . . . . 8
4. Efficient State Management . . . . . . . . . . . . . . . . . 9
4.1. State in the Forwarding Plane . . . . . . . . . . . . . . 9
4.2. State in the NMS/Controller . . . . . . . . . . . . . . . 10
4.3. Annotations for Configuring Leased Lines . . . . . . . . 10
5. Setting Up Leased Lines . . . . . . . . . . . . . . . . . . . 12
6. Leased Line Protection . . . . . . . . . . . . . . . . . . . 13
7. Security Considerations . . . . . . . . . . . . . . . . . . . 13
8. Informative References . . . . . . . . . . . . . . . . . . . 13
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
1. Introduction
IP leased line services, Ethernet Private Line (EPL), and Time-
Division Multiplexed (TDM) leased line services are commonly offered
by operators worldwide.
There are customers, e.g., many enterprises, that insist on TDM
leased line services. They do so regardless of the fact that the
same operators often offer IP leased line services and EPL services
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