Benchmarking Methodology for In-Service Software Upgrade (ISSU)
RFC 7654
Document | Type | RFC - Informational (October 2015; No errata) | |
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Authors | Sarah Banks , Fernando Calabria , Gery Czirjak , Ramdas Machat | ||
Last updated | 2015-10-27 | ||
Replaces | draft-banks-bmwg-issu-meth | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Al Morton | ||
Shepherd write-up | Show (last changed 2015-06-01) | ||
IESG | IESG state | RFC 7654 (Informational) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Joel Jaeggli | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) S. Banks Request for Comments: 7654 VSS Monitoring Category: Informational F. Calabria ISSN: 2070-1721 Cisco Systems G. Czirjak R. Machat Juniper Networks October 2015 Benchmarking Methodology for In-Service Software Upgrade (ISSU) Abstract Modern forwarding devices attempt to minimize any control- and data- plane disruptions while performing planned software changes by implementing a technique commonly known as In-Service Software Upgrade (ISSU). This document specifies a set of common methodologies and procedures designed to characterize the overall behavior of a Device Under Test (DUT), subject to an ISSU event. 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/rfc7654. Banks, et al. Informational [Page 1] RFC 7654 Benchmarking Software Upgrade October 2015 Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 2. Conventions Used in This Document ...............................4 3. Generic ISSU Process, Phased Approach ...........................4 3.1. Software Download ..........................................5 3.2. Software Staging ...........................................6 3.3. Upgrade Run ................................................6 3.4. Upgrade Acceptance .........................................7 4. Test Methodology ................................................7 4.1. Test Topology ..............................................7 4.2. Load Model .................................................8 5. ISSU Test Methodology ...........................................9 5.1. Pre-ISSU Recommended Verifications .........................9 5.2. Software Staging ...........................................9 5.3. Upgrade Run ...............................................10 5.4. Post-ISSU Verification ....................................11 5.5. ISSU under Negative Stimuli ...............................12 6. ISSU Abort and Rollback ........................................12 7. Final Report: Data Presentation and Analysis ...................13 7.1. Data Collection Considerations ............................14 8. Security Considerations ........................................15 9. References .....................................................15 9.1. Normative References ......................................15 9.2. Informative References ....................................16 Acknowledgments ...................................................16 Authors' Addresses ................................................16 Banks, et al. Informational [Page 2] RFC 7654 Benchmarking Software Upgrade October 2015 1. Introduction As required by most Service Provider (SP) network operators, ISSU functionality has been implemented by modern forwarding devices to upgrade or downgrade from one software version to another with a goal of eliminating the downtime of the router and/or the outage of service. However, it is noted that while most operators desire complete elimination of downtime, minimization of downtime andShow full document text