IS-IS Monitoring and Troubleshooting

Table 22 summarizes the command-line interface (CLI) commands you can use to monitor Intermediate System-to-Intermediate System protocol (IS-IS). In the table, the commands are grouped by functionality. In the remainder of this chapter, the commands are explained alphabetically.

Table 22: Commands for Monitoring IS-IS

Task or Information to Monitor	Command
Status of interfaces on which IS-IS is running	`show isis interface`
Hostname mapping	`show isis hostname`
IS-IS routing table entries	`show isis routes`
Database entries	`show isis database`
Remove database entries	`clear isis database`
Adjacent routers	`show isis adjacency`
Remove adjacencies	`clear isis adjacency`
SPF calculations	`show isis spf`
IS-IS traffic statistics	`show isis statistics`
Zero IS-IS traffic statistics	`clear isis statistics`
Reset IS-IS dynamic overload bit	`clear isis overload`