Multi-Segment Pseudowires in Passive Optical Networks
RFC 6456
| Document | Type |
RFC - Informational
(November 2011; No errata)
Was draft-li-pwe3-ms-pw-pon (individual in rtg area)
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6456 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Stewart Bryant | ||
| IESG note | Daniel King (daniel@olddog.co.uk) is the Document Shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) H. Li
Request for Comments: 6456 R. Zheng
Category: Informational Huawei Technologies
ISSN: 2070-1721 A. Farrel
Old Dog Consulting
November 2011
Multi-Segment Pseudowires in Passive Optical Networks
Abstract
This document describes the application of MPLS multi-segment
pseudowires (MS-PWs) in a dual-technology environment comprising a
Passive Optical Network (PON) and an MPLS Packet Switched Network
(PSN).
PON technology may be used in mobile backhaul networks to support the
end segments closest to the aggregation devices. In these cases,
there may be a very large number of pseudowire (PW) Terminating
Provider Edge (T-PE) nodes. The MPLS control plane could be used to
provision these end segments, but support for the necessary protocols
would complicate the management of the T-PEs and would significantly
increase their expense. Alternatively, static, or management plane,
configuration could be used to configure the end segments, but the
very large number of such segments in a PON places a very heavy
burden on the network manager.
This document describes how to set up the end segment of an end-to-
end MPLS PW over a Gigabit-capable Passive Optical Network (G-PON) or
10 Gigabit-capable Passive Optical Network (XG-PON) using the G-PON
and XG-PON management protocol, Optical Network Termination
Management and Control Interface (OMCI). This simplifies and speeds
up PW provisioning compared with manual configuration.
This document also shows how an MS-PW may be constructed from an end
segment supported over a PON, and switched to one or more segments
supported over an MPLS PSN.
Li, et al. Informational [Page 1]
RFC 6456 Multi-Segment Pseudowires in PON November 2011
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/rfc6456.
Copyright Notice
Copyright (c) 2011 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 for G-PON/XG-PON ....................................5
3. Multi-Segment Pseudowire over PON Network Reference Model .......6
4. Label Provisioning for Pseudowires over PON .....................9
5. Security Considerations .........................................9
6. References .....................................................10
6.1. Normative References ......................................10
6.2. Informative References ....................................11
1. Introduction
The use of PWs in Packet Switched Networks (PSNs) is defined in
[RFC3985]. This architecture is extended in [RFC5659] for multi-
segment pseudowires (MS-PWs) satisfying the requirements in
[RFC5254]. More detail on MS-PWs is provided in [RFC6073].
Li, et al. Informational [Page 2]
RFC 6456 Multi-Segment Pseudowires in PON November 2011
An MS-PW is a useful technology for certain applications where there
is an aggregation of paths toward a common point in the network,
e.g., mobile backhaul; the segments can be aggregated within tunnels
between PW switching points thus improving scalability and reducing
the number of control plane adjacencies where a control plane is
used.
Segments of an MS-PW in a PSN can be set up using manual provisioning
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