H3C S9500 Series Operation Manual

Operation Manual – IS-IS 

H3C S9500 Series Routing Switches 

Table of Contents

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Table of Contents 

Chapter 1 IS-IS Configuration ...................................................................................................... 1-1

1.1 IS-IS Overview ................................................................................................................... 1-1

1.1.1 Basic Concepts ....................................................................................................... 1-1

1.1.2 IS-IS Area................................................................................................................ 1-4

1.1.3 IS-IS Network Type ................................................................................................. 1-6

1.1.4 IS-IS PDU Format ................................................................................................... 1-8

1.1.5 IS-IS Features Supported ..................................................................................... 1-15

1.1.6 Protocols and Standards....................................................................................... 1-18

1.2 IS-IS Configuration Task List ........................................................................................... 1-19

1.3 Configuring IS-IS Basic Functions ................................................................................... 1-19

1.3.1 Configuration Prerequisites................................................................................... 1-19

1.3.2 Configuration Procedure ....................................................................................... 1-20

1.4 Configuring IS-IS Routing Information Control ................................................................ 1-21

1.4.1 Configuration Prerequisites................................................................................... 1-21

1.4.2 Specifying a Priority for IS-IS ................................................................................ 1-21

1.4.3 Configuring IS-IS Link Cost................................................................................... 1-21

1.4.4 Configuring the Maximum Number of Equal Cost Routes .................................... 1-23

1.4.5 Configuring IS-IS Route Summarization ............................................................... 1-24

1.4.6 Advertising a Default Route .................................................................................. 1-24

1.4.7 Configuring Inbound Route Filtering ..................................................................... 1-25

1.4.8 Configuring Route Redistribution .......................................................................... 1-25

1.4.9 Configuring IS-IS Route Leaking........................................................................... 1-25

1.5 Tuning and Optimizing IS-IS Network ............................................................................. 1-26

1.5.1 Configuration Prerequisites................................................................................... 1-26

1.5.2 Configuring a DIS Priority for an Interface ............................................................ 1-26

1.5.3 Configuring IS-IS Timers....................................................................................... 1-27

1.5.4 Disabling an Interface from Sending/Receiving IS-IS Hello Packets.................... 1-28

1.5.5 Configuring LSP Parameters ................................................................................ 1-28

1.5.6 Configuring SPF Parameters ................................................................................ 1-30

1.5.7 Configuring Dynamic Host Name Mapping........................................................... 1-31

1.5.8 Configuring IS-IS Authentication ........................................................................... 1-32

1.5.9 Configuring LSDB Overload Tag........................................................................... 1-33

1.5.10 Logging the Adjacency Changes ........................................................................ 1-33

1.5.11 Enabling an Interface to Send Small Hello Packets............................................ 1-34

1.5.12 Enabling IS-IS SNMP Trap ................................................................................. 1-34

1.6 Displaying and Maintaining IS-IS Configuration .............................................................. 1-34

1.7 IS-IS Configuration Examples.......................................................................................... 1-35

1.7.1 IS-IS Basic Configuration ...................................................................................... 1-35