Chapter 2 Advanced Routing for FortiOS 5.0
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Intermediate System to Intermediate System Protocol (IS-IS)
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IS-IS background and concepts
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Parts and terminology of IS-IS
Parts and terminology of IS-IS
Before you can understand how IS-IS functions, you need to understand some of the main concepts and parts of IS-IS.
This section includes:
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DIS election and pseudonode LSP
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Packet types
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Default routing
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Timer options
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Authentication
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Integrated IS-IS