| 4.1 IS-IS Fundamentals |
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| 4.1.1 Uses for IS-IS Routing |
| 4.1.2 IS-IS and OSPF |
| 4.1.3 IS-IS Routing |
| 4.1.4 IS-IS Features |
| 4.1.5 IS-IS Link-State Operation |
| 4.1.6 Integrated IS-IS |
| 4.1.7 Principles and Issues of IS-IS Design |
| 4.1.8 The ES-IS Protocol |
| 4.1.9 OSI Routing Levels |
| 4.1.10 IS-IS and OSPF Network Design |
| 4.1.11 Differences Between Integrated IS-IS and OSPF |
| 4.2 ISO Addressing |
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| 4.2.1 NSAP Addresses |
| 4.2.2 NSAP Address Structure |
| 4.2.3 NSAP Address Example |
| 4.2.4 Identifying Systems in IS-IS |
| 4.2.5 NET Addresses |
| 4.2.6 Subnetwork Point of Attachment, Circuits, and Links |
| 4.2.7 IS-IS Routing Levels |
| 4.2.8 Intra-Area and Interarea Addressing and Routing Logic |
| 4.2.9 OSI Addressing in Networks Example |
| 4.2.10 Route Leaking |
| 4.3 IS-IS Operation |
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| 4.3.1 IS-IS Protocol Data Units |
| 4.3.2 Link-State Packets |
| 4.3.3 LSP Headers |
| 4.3.4 Implementing IS-IS in NBMA Networks |
| 4.3.5 Implementing IS-IS in Broadcast Networks |
| 4.3.6 LSP and IIH Levels |
| 4.3.7 Comparing Broadcast and Point-to-Point Topologies |
| 4.3.8 Link-State Database Synchronization |
| 4.3.9 LSDB Synchronization |
| 4.3.10 LAN LSDB Synchronization Example |
| 4.3.11 Point-to-Point LSDB Synchronization Example |
| 4.3.12 LAN Adjacencies |
| 4.3.13 WAN Adjacencies |
| 4.4 Configuring Basic Integrated IS-IS |
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| 4.4.1 Integrated IS-IS in an CLNS Environment |
| 4.4.2 Building a Routing Table |
| 4.4.3 Steps to Configuring Integrated IS-IS |
| 4.4.4 Step 1: Define Area and Addressing |
| 4.4.5 Step 2: Enable IS-IS on the Router |
| 4.4.6 Step 3: Configure the NET |
| 4.4.7 Step 4: Enable Integrated IS-IS on the Proper Interface |
| 4.4.8 Simple Integrated IS-IS Example |
| 4.5 Optimizing IS-IS |
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| 4.5.1 Changing the IS-IS Router Type |
| 4.5.2 Changing the IS-IS Interface Level |
| 4.5.3 Changing the IS-IS Metric |
| 4.5.4 Tuning IS-IS Configuration Example |
| 4.5.5 Configuring Route Summarization in IS-IS |
| 4.6 Verifying and Troubleshooting IS-IS |
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| 4.6.1 IS-IS Lab |
| 4.6.2 Verifying CLSN IS-IS Structures |
| 4.6.3 Troubleshooting Integrated IS-IS Configurations |
| 4.6.4 Troubleshooting Integrated IS-IS Configuration Example |
| 4.7 IS-IS Lab Exercises |
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| 4.7.1 Lab 4-1 Configuring Basic Integrated IS-IS |
| 4.7.2 Lab 4-2 Multi-Area Integrated IS-IS |
| 4.7.3 Lab 4-3 Configuring IS-IS over Frame Relay |