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Configuring Integrated IS-IS
Monitoring IS-IS
IPC-289
Cisco IOS IP Configuration Guide
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:
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
Command Purpose
Router# show isis database [level-1]
[level-2] [l1] [l2] [detail] [lspid]
Displays the IS-IS link-state database.
Router# show isis area-tag routes
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-tag topology
Displays a list of all connected routers in all areas.