MENOG4-ISIS-Tutorial
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80
pages
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English
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Documents
Écrit par
Philip Smith
Publié par
Ontea
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80
pages
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English
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Documents
Description
ISIS TutorialPhilip Smith MENOG 45th-9th April 2009Bahrain1MENOG 4 © 2009 Cisco Systems, Inc. All rights reserved.Presentation Slides Will be available onftp://ftp-eng.cisco.com/pfs/seminars/MENOG4-ISIS-Tutorial.pdfAnd on the MENOG website Feel free to ask questions any time2MENOG 4 © 2009 Cisco Systems, Inc. All rights reserved.Agenda Comparing ISIS and OSPF Introduction to ISIS ISIS Best Practices3MENOG 4 © 2009 Cisco Systems, Inc. All rights reserved.Comparing ISIS and OSPFBoth Link State Protocols use the Dijkstra SPFAlgorithmSo what’s the difference then??4MENOG 4 © 2009 Cisco Systems, Inc. All rights reserved.What Is IS-IS ? Intermediate System to Intermediate System An “IS” is ISO terminology for a router IS-IS was originally designed for use as a dynamicrouting protocol for ISO CLNP, defined in the ISO10589 standard Later adapted to carry IP prefixes in addition to CLNP(known as Integrated or Dual IS-IS) as described inRFC 1195 Predominantly used in ISP environment5MENOG 4 © 2009 Cisco Systems, Inc. All rights reserved.IS-IS Timeline 1978ish “New” Arpanet AlgorithmEric Rosen et al 1986 to 90 Decnet Phase VRadia Perlman, Mike Shand 1987 ISO 10589 (IS-IS)Dave Oran 1990 RFC 1195 (Integrated IS-IS)Ross Callon, Chris Gunner 1990 to present: All sorts of enhancementsEveryone contributed! 2008 RFC5308 adds IPv6 supportAnd RFC5120 adds Multi-Topology Routing support6MENOG 4 © 2009 Cisco ...
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Langue
English
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