Benchmarking Terminology for Protection Performance
RFC 6414

Internet Engineering Task Force (IETF)                       S. Poretsky
Request for Comments: 6414                          Allot Communications
Category: Informational                                       R. Papneja
ISSN: 2070-1721                                                   Huawei
                                                              J. Karthik
                                                             S. Vapiwala
                                                           Cisco Systems
                                                           November 2011

          Benchmarking Terminology for Protection Performance

Abstract

   This document provides common terminology and metrics for
   benchmarking the performance of sub-IP layer protection mechanisms.
   The performance benchmarks are measured at the IP layer; protection
   may be provided at the sub-IP layer.  The benchmarks and terminology
   can be applied in methodology documents for different sub-IP layer
   protection mechanisms such as Automatic Protection Switching (APS),
   Virtual Router Redundancy Protocol (VRRP), Stateful High Availability
   (HA), and Multiprotocol Label Switching Fast Reroute (MPLS-FRR).

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/rfc6414.

Poretsky, et al.              Informational                     [Page 1]
RFC 6414            Benchmarking Terms for Protection      November 2011

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Table of Contents

   1. Introduction ....................................................4
      1.1. Scope ......................................................4
      1.2. General Model ..............................................5
   2. Existing Definitions ............................................8
   3. Test Considerations .............................................9
      3.1. Paths ......................................................9
           3.1.1. Path ................................................9
           3.1.2. Working Path .......................................10
           3.1.3. Primary Path .......................................10
           3.1.4. Protected Primary Path .............................11
           3.1.5. Backup Path ........................................11
           3.1.6. Standby Backup Path ................................12
           3.1.7. Dynamic Backup Path ................................12
           3.1.8. Disjoint Paths .....................................13
           3.1.9. Point of Local Repair (PLR) ........................13
           3.1.10. Shared Risk Link Group (SRLG) .....................14
      3.2. Protection ................................................14
           3.2.1. Link Protection ....................................14
           3.2.2. Node Protection ....................................15