Configuring Integrated IS-IS

Monitoring IS-IS

Area A3253-01:

 

 

 

 

 

 

System Id

Interface

SNPA

State

Holdtime

Type

Protocol

0000.0000.0053

Et1

0060.3e58.ccdb

Up

22

L1

IS-IS

0000.0000.0003

Et1

0000.0c03.6944

Up

20

L1

IS-IS

--------------

 

 

 

 

 

 

Area A3253-02:

 

 

 

 

 

 

System Id

Interface

SNPA

State

Holdtime

Type

Protocol

0000.0000.0002

Et2

0000.0c03.6bc5

Up

27

L1

IS-IS

0000.0000.0053

Et2

0060.3e58.ccde

Up

24

L1

IS-IS

Monitoring IS-IS

To monitor the IS-IS tables and databases, use the following commands in EXEC mode, as needed:

Command

Purpose

 

 

Router# show isis database [level-1]

Displays the IS-IS link-state database.

[level-2] [l1] [l2] [detail] [lspid]

 

 

 

Router# show isis area-tagroutes

Displays the IS-IS Level 1 routing table.

 

 

Router# show isis spf-log

Displays how often and why the router has run a full SPF calculation.

 

 

Router# show isis area-tagtopology

Displays a list of all connected routers in all areas.

 

 

IS-IS Configuration Examples

This section includes the following examples:

Enabling IS-IS Configuration Example

Multiarea IS-IS Configuration for CLNS Network Example

IS-IS Throttle Timers Example

Enabling IS-IS Configuration Example

The following example shows how to configure three routers to run IS-IS as an IP routing protocol. Figure 53 illustrates the example configuration.

Router A Configuration

router isis

net 49.0001.0000.0000.000a.00 interface ethernet 0

ip router isis interface serial 0

ip router isis

Router B Configuration

router isis

net 49.0001.0000.0000.000b.00 interface ethernet 0

ip router isis interface ethernet 1

ip router isis

Cisco IOS IP Configuration Guide

IPC-289

Page 335
Image 335
Cisco Systems 78-11741-02 Monitoring IS-IS, IS-IS Configuration Examples, Enabling IS-IS Configuration Example, IPC-289