Cisco Systems 78-11741-02 manual Clearing Routes from the IP Routing Table, IPC-378

Configuring IP Routing Protocol-Independent Features

Monitoring and Maintaining the IP Network

	Command	Purpose
Step 4
	Router(config-keychain-key)# accept-lifetimestart-time	Specifies the time period during which the key
	{infinite end-timeduration seconds}]	can be received.
Step 5
	Router(config-keychain-key)# send-lifetimestart-time	Specifies the time period during which the key
	{infinite end-timeduration seconds}	can be sent.

Use the show key chain EXEC command to display key chain information. For examples of key management, see the “Key Management Examples” section at the end of this chapter.

Monitoring and Maintaining the IP Network

You can remove all contents of a particular cache, table, or database. You also can display specific statistics. The following sections describe each of these tasks.

Clearing Routes from the IP Routing Table

You can remove all contents of a particular table. Clearing a table can become necessary when the contents of the particular structure have become, or are suspected to be, invalid.

To clear one or more routes from the IP routing table, use the following command in EXEC mode:

Command	Purpose
Router# clear ip route {network [mask] *}	Clears one or more routes from the IP routing table.

Displaying System and Network Statistics

You can display specific statistics such as the contents of IP routing tables, caches, and databases. Information provided can be used to determine resource utilization and solve network problems. You can also display information about node reachability and discover the routing path packets leaving your device are taking through the network.

To display various routing statistics, use the following commands in EXEC mode, as needed:

Command	Purpose
Router# show ip cache policy	Displays the cache entries in the policy route cache.
Router# show ip local policy	Displays the local policy route map if one exists.
Router# show ip policy	Displays policy route maps.
Router# show ip protocols	Displays the parameters and current state of the active
	routing protocol process.
Router# show ip route [address [mask] [longer-prefixes]]	Displays the current state of the routing table.
[protocol [process-id]]
Router# show ip route summary	Displays the current state of the routing table in summary
	form.
Router# show ip route supernets-only	Displays supernets.

Cisco IOS IP Configuration Guide

IPC-378