Internet Engineering Task Force (IETF) S. Poretsky
Request for Comments: 6413 Allot Communications
Category: Informational B. Imhoff
ISSN: 2070-1721 Juniper Networks
K. Michielsen
Cisco Systems
November 2011
Benchmarking Methodology for Link-State IGP Data-Plane Route Convergence
Abstract
This document describes the methodology for benchmarking Link-State
Interior Gateway Protocol (IGP) Route Convergence. The methodology
is to be used for benchmarking IGP convergence time through
externally observable (black-box) data-plane measurements. The
methodology can be applied to any link-state IGP, such as IS-IS and
OSPF.
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/rfc6413.
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Poretsky, et al. Informational [Page 1]RFC 6413 IGP Convergence Benchmark Methodology November 2011
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Factors for IGP Route Convergence Time . . . . . . . . . . 4
1.3. Use of Data Plane for IGP Route Convergence
Benchmarking . . . . . . . . . . . . . . . . . . . . . . . 5
1.4. Applicability and Scope . . . . . . . . . . . . . . . . . 6
2. Existing Definitions . . . . . . . . . . . . . . . . . . . . . 6
3. Test Topologies . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Test Topology for Local Changes . . . . . . . . . . . . . 7
3.2. Test Topology for Remote Changes . . . . . . . . . . . . . 8
3.3. Test Topology for Local ECMP Changes . . . . . . . . . . . 10
3.4. Test Topology for Remote ECMP Changes . . . . . . . . . . 11
3.5. Test topology for Parallel Link Changes . . . . . . . . . 11
4. Convergence Time and Loss of Connectivity Period . . . . . . . 12
4.1. Convergence Events without Instant Traffic Loss . . . . . 13
4.2. Loss of Connectivity (LoC) . . . . . . . . . . . . . . . . 16
5. Test Considerations . . . . . . . . . . . . . . . . . . . . . 17
5.1. IGP Selection . . . . . . . . . . . . . . . . . . . . . . 17
5.2. Routing Protocol Configuration . . . . . . . . . . . . . . 17
5.3. IGP Topology . . . . . . . . . . . . . . . . . . . . . . . 17
5.4. Timers . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.5. Interface Types . . . . . . . . . . . . . . . . . . . . . 18
5.6. Offered Load . . . . . . . . . . . . . . . . . . . . . . . 18
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