Requirements for Multi-Segment Pseudowire Emulation Edge-to-Edge (PWE3)
RFC 5254
Network Working Group N. Bitar, Ed.
Request for Comments: 5254 Verizon
Category: Informational M. Bocci, Ed.
Alcatel-Lucent
L. Martini, Ed.
Cisco Systems, Inc.
October 2008
Requirements for Multi-Segment Pseudowire Emulation Edge-to-Edge (PWE3)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Abstract
This document describes the necessary requirements to allow a service
provider to extend the reach of pseudowires across multiple domains.
These domains can be autonomous systems under one provider
administrative control, IGP areas in one autonomous system, different
autonomous systems under the administrative control of two or more
service providers, or administratively established pseudowire
domains.
Bitar, et al. Informational [Page 1]
RFC 5254 Requirements for Multi-Segment PWE3 October 2008
Table of Contents
1. Introduction ....................................................3
1.1. Scope ......................................................3
1.2. Architecture ...............................................3
2. Terminology .....................................................6
2.1. Specification of Requirements ..............................6
3. Use Cases .......................................................7
3.1. Multi-Segment Pseudowire Setup Mechanisms ..................9
4. Multi-Segment Pseudowire Requirements ..........................10
4.1. All Mechanisms ............................................10
4.1.1. Architecture .......................................10
4.1.2. Resiliency .........................................11
4.1.3. Quality of Service .................................11
4.1.4. Congestion Control .................................12
4.1.5 Generic Requirements for MS-PW Setup Mechanisms ....13
4.1.6. Routing ............................................14
4.2. Statically Configured MS-PWs ..............................15
4.2.1. Architecture .......................................15
4.2.2. MPLS-PWs ...........................................15
4.2.3. Resiliency .........................................15
4.2.4. Quality of Service .................................16
4.3. Signaled PW Segments ......................................16
4.3.1. Architecture .......................................16
4.3.2. Resiliency .........................................16
4.3.3. Quality of Service .................................17
4.3.4. Routing ............................................17
4.3.5. Additional Requirements on Signaled MS-PW Setup
Mechanisms .........................................17
4.4. Signaled PW / Dynamic Route ...............................18
4.4.1. Architecture .......................................18
4.4.2. Resiliency .........................................18
4.4.3. Quality of Service .................................18
4.4.4. Routing ............................................18
5. Operations and Maintenance (OAM) ...............................19
6. Management of Multi-Segment Pseudowires ........................20
6.1. MIB Requirements ..........................................20
6.2. Management Interface Requirements .........................21
7. Security Considerations ........................................21
7.1. Inter-Provider MS-PWs .....................................21
7.1.1. Data-Plane Security Requirements ...................21
7.1.2. Control-Plane Security Requirements ................23
7.2. Intra-Provider MS-PWs .....................................25
8. Acknowledgments ................................................25
9. References .....................................................25
9.1. Normative References ......................................25
9.2. Informative References ....................................25
Bitar, et al. Informational [Page 2]
RFC 5254 Requirements for Multi-Segment PWE3 October 2008
1. Introduction
1.1. Scope
This document specifies requirements for extending pseudowires across
more than one packet switched network (PSN) domain and/or more than
Show full document text