Protocol Extensions for Support of Diffserv-aware MPLS Traffic Engineering
RFC 4124
| Document | Type | RFC - Proposed Standard (June 2005; No errata) | |
|---|---|---|---|
| Author | François Le Faucheur | ||
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 4124 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Bert Wijnen | ||
| Send notices to | (None) | ||
Network Working Group F. Le Faucheur, Ed.
Request for Comments: 4124 Cisco Systems, Inc.
Category: Standards Track June 2005
Protocol Extensions for Support of
Diffserv-aware MPLS Traffic Engineering
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
This document specifies the protocol extensions for support of
Diffserv-aware MPLS Traffic Engineering (DS-TE). This includes
generalization of the semantics of a number of Interior Gateway
Protocol (IGP) extensions already defined for existing MPLS Traffic
Engineering in RFC 3630, RFC 3784, and additional IGP extensions
beyond those. This also includes extensions to RSVP-TE signaling
beyond those already specified in RFC 3209 for existing MPLS Traffic
Engineering. These extensions address the requirements for DS-TE
spelled out in RFC 3564.
Table of Contents
1. Introduction ....................................................3
1.1. Specification of Requirements ..............................3
2. Contributing Authors ............................................4
3. Definitions .....................................................5
4. Configurable Parameters .........................................5
4.1. Link Parameters ............................................5
4.1.1. Bandwidth Constraints (BCs) .........................5
4.1.2. Overbooking .........................................6
4.2. LSR Parameters .............................................7
4.2.1. TE-Class Mapping ....................................7
4.3. LSP Parameters .............................................8
4.3.1. Class-Type ..........................................8
4.3.2. Setup and Holding Preemption Priorities .............8
4.3.3. Class-Type/Preemption Relationship ..................8
Le Faucheur Standards Track [Page 1]
RFC 4124 Protocols for Diffserv-aware TE June 2005
4.4. Examples of Parameters Configuration .......................9
4.4.1. Example 1 ...........................................9
4.4.2. Example 2 ...........................................9
4.4.3. Example 3 ..........................................10
4.4.4. Example 4 ..........................................11
4.4.5. Example 5 ..........................................11
5. IGP Extensions for DS-TE .......................................12
5.1. Bandwidth Constraints .....................................12
5.2. Unreserved Bandwidth ......................................14
6. RSVP-TE Extensions for DS-TE ...................................15
6.1. DS-TE-Related RSVP Messages Format ........................15
6.1.1. Path Message Format ................................16
6.2. CLASSTYPE Object ..........................................16
6.2.1. CLASSTYPE object ...................................16
6.3. Handling CLASSTYPE Object .................................17
6.4. Non-support of the CLASSTYPE Object .......................20
6.5. Error Codes for Diffserv-aware TE .........................20
7. DS-TE Support with MPLS Extensions .............................21
7.1. DS-TE Support and References to Preemption Priority .......22
7.2. DS-TE Support and References to Maximum Reservable
Bandwidth .................................................22
8. Constraint-Based Routing .......................................22
9. Diffserv Scheduling ............................................23
10. Existing TE as a Particular Case of DS-TE .....................23
11. Computing "Unreserved TE-Class [i]" and Admission
Control Rules .................................................23
11.1. Computing "Unreserved TE-Class [i]" .....................23
11.2. Admission Control Rules .................................24
12. Security Considerations .......................................24
13. IANA Considerations ...........................................25
13.1. A New Name Space for Bandwidth Constraints Model
Identifiers .............................................25
13.2. A New Name Space for Error Values under the
"Diffserv-aware TE ......................................25
13.3. Assignments Made in This Document .......................26
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