H3C LS-3100-52P-OVS-H3 Operation Manual - Is-Is Configuration
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IS-IS Configuration
When configuring IS-IS, go to these sections for information you are interested in:
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IS-IS Overview
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IS-IS Configuration Task List
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Configuring IS-IS Basic Functions
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Configuring IS-IS Routing Information Control
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Tuning and Optimizing IS-IS Networks
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Configuring IS-IS Authentication
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Configuring System ID to Host Name Mappings
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Configuring IS-IS GR
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Enabling the Logging of Neighbor State Changes
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Enabling IS-IS SNMP Trap
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Displaying and Maintaining IS-IS
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IS-IS Configuration Example
The term “router” in this document refers to a router in a generic sense or an Ethernet switch running
routing protocols.
IS-IS Overview
Intermediate System-to-Intermediate System (IS-IS) is a dynamic routing protocol designed by the
International Organization for Standardization (ISO) to operate on the connectionless network protocol
(CLNP).
The IS-IS routing protocol was modified and extended in RFC 1195 by the International Engineer Task
Force (IETF) for application in both TCP/IP and OSI reference models, and the new one is called
Integrated IS-IS or Dual IS-IS.
IS-IS is an Interior Gateway Protocol (IGP) used within an Autonomous System. It adopts the Shortest
Path First (SPF) algorithm for route calculation.
Basic Concepts
IS-IS terminology
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Intermediate system (IS). An IS, similar to a router in TCP/IP, is the basic unit in IS-IS to generate
and propagate routing information. In the following text, an IS refers to a router.
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End system (ES). An ES refers to a host system in TCP/IP. ISO defines the ES-IS protocol for
communication between an ES and an IS, and therefore an ES does not participate in the IS-IS
processing.