MPLS Inter-Autonomous System (AS) Traffic Engineering (TE) Requirements
RFC 4216
| Document | Type | RFC - Informational (November 2005; No errata) | |
|---|---|---|---|
| Authors | Vasseur Jp , Raymond Zhang | ||
| Last updated | 2015-10-14 | ||
| Stream | Internent Engineering Task Force (IETF) | ||
| Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 4216 (Informational) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Bert Wijnen | ||
| Send notices to | < jpv@cisco.com>, <kireeti@juniper.net> | ||
Network Working Group R. Zhang, Ed.
Request for Comments: 4216 Infonet Services Corporation
Category: Informational J.-P. Vasseur, Ed.
Cisco Systems, Inc.
November 2005
MPLS Inter-Autonomous System (AS)
Traffic Engineering (TE) Requirements
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.
Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
This document discusses requirements for the support of inter-AS MPLS
Traffic Engineering (MPLS TE). Its main objective is to present a
set of requirements and scenarios which would result in general
guidelines for the definition, selection, and specification
development for any technical solution(s) meeting these requirements
and supporting the scenarios.
Table of Contents
1. Introduction ....................................................3
1.1. Conventions Used in This Document ..........................3
2. Contributing Authors ............................................4
3. Definitions and Requirements Statement ..........................5
3.1. Definitions ................................................5
3.2. Objectives and Requirements of Inter-AS Traffic
Engineering ................................................7
3.2.1. Inter-AS Bandwidth Guarantees .......................7
3.2.2. Inter-AS Resource Optimization ......................8
3.2.3. Fast Recovery across ASes ...........................8
3.3. Inter-AS Traffic Engineering Requirements Statement ........9
4. Application Scenarios ...........................................9
4.1. Application Scenarios Requiring Inter-AS Bandwidth
Guarantees .................................................9
4.1.1. Scenario I - Extended or Virtual PoP (VPoP) .........9
4.1.2. Scenario II - Extended or Virtual Trunk ............11
Zhang & Vasseur Informational [Page 1]
RFC 4216 MPLS Inter-AS TE Requirements November 2005
4.1.3. Scenario III - End-to-End Inter-AS MPLS TE
from CE to CE ......................................12
4.2. Application Scenarios Requiring Inter-AS Resource
Optimization ..............................................13
4.2.1. Scenario IV - TE across multi-AS within a
Single SP ..........................................13
4.2.2. Scenario V - Transit ASes as Primary and
Redundant Transport ................................14
5. Detailed Requirements for Inter-AS MPLS Traffic Engineering ....16
5.1. Requirements within One SP Administrative Domain ..........16
5.1.1. Inter-AS MPLS TE Operations and Interoperability ...16
5.1.2. Protocol Signaling and Path Computations ...........16
5.1.3. Optimality .........................................17
5.1.4. Support of Diversely Routed Inter-AS TE LSP ........17
5.1.5. Re-Optimization ....................................18
5.1.6. Fast Recovery Support Using MPLS TE Fast Reroute ...18
5.1.7. DS-TE Support ......................................18
5.1.8. Scalability and Hierarchical LSP Support ...........19
5.1.9. Mapping of Traffic onto Inter-AS MPLS TE Tunnels ...19
5.1.10. Inter-AS MPLS TE Management .......................19
5.1.10.1. Inter-AS MPLS TE MIB Requirements ........19
5.1.10.2. Inter-AS MPLS TE Fault Management
Requirements .............................20
5.1.11. Extensibility .....................................21
5.1.12. Complexity and Risks ..............................21
5.1.13. Backward Compatibility ............................21
5.1.14. Performance .......................................21
5.2. Requirements for Inter-AS MPLS TE across Multiple SP ......22
5.2.1. Confidentiality ....................................22
5.2.2. Policy Control .....................................23
5.2.2.1. Inter-AS TE Agreement Enforcement
Polices ...................................23
5.2.2.2. Inter-AS TE Rewrite Policies ..............24
5.2.2.3. Inter-AS Traffic Policing .................24
6. Security Considerations ........................................24
7. Acknowledgements ...............................................24
8. Normative References ...........................................25
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