RFC 3564 (rfc3564) - Page 2 of 22

Requirements for Support of Differentiated Services-aware MPLS Traffic Engineering

RFC 3564          Requirements for Diff-Serv-aware TE          July 2003


Table of Contents

   Specification Requirements .......................................  2
   1.  Introduction .................................................  3
       1.1.  Problem Statement ......................................  3
       1.2.  Definitions ............................................  3
       1.3.  Mapping of traffic to LSPs .............................  5
   2.  Application Scenarios ........................................  6
       2.1.  Scenario 1: Limiting Proportion of Classes on a Link ...  6
       2.2.  Scenario 2: Maintain relative proportion of traffic ....  6
       2.3.  Scenario 3: Guaranteed Bandwidth Services ..............  8
   3.  Detailed Requirements for DS-TE ..............................  9
       3.1.  DS-TE Compatibility ....................................  9
       3.2.  Class-Types ............................................  9
       3.3.  Bandwidth Constraints .................................. 11
       3.4.  Preemption and TE-Classes .............................. 12
       3.5.  Mapping of Traffic to LSPs ............................. 15
       3.6.  Dynamic Adjustment of Diff-Serv PHBs ................... 15
       3.7.  Overbooking ............................................ 16
       3.8.  Restoration ............................................ 16
   4.  Solution Evaluation Criteria ................................. 16
       4.1.  Satisfying detailed requirements ....................... 17
       4.2.  Flexibility ............................................ 17
       4.3.  Extendibility .......................................... 17
       4.4.  Scalability ............................................ 17
       4.5.  Backward compatibility/Migration ....................... 17
       4.6.  Bandwidth Constraints Model ............................ 18
   5.  Security Considerations ...................................... 18
   6.  Acknowledgment ............................................... 18
   7.  Normative References ......................................... 18
   8.  Informative References ....................................... 19
   9.  Contributing Authors ......................................... 20
   10. Editors' Addresses ........................................... 21
   11. Full Copyright Statement ..................................... 22

Specification Requirements

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC 2119].











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