Cisco Systems 78-11741-02 manual Displaying System and Network Statistics, IPC-48

Configuring IP Addressing

Monitoring and Maintaining IP Addressing

To specify the format in which netmasks appear for the current session, use the following command in EXEC mode:

Command	Purpose
Router# term ip netmask-format {bitcount decimal	Specifies the format of network masks for the current session.
hexadecimal}

To configure the format in which netmasks appear for an individual line, use the following command in line configuration mode:

Command	Purpose
Router(config-line)#ip netmask-format {bitcount	Configures the format of network masks for a line.
decimal hexadecimal}

Displaying System and Network Statistics

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

These tasks are summarized in the table that follows. See the “IP Addressing Commands” chapter in the Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services publication for details about the commands listed in these tasks. Use the following commands in privileged EXEC mode to display specific statistics, as needed:

Command		Purpose
Router# show arp		Displays the entries in the ARP table.
Router# show hosts		Displays the default domain name, style of lookup service, the
		name server hosts, and the cached list of host names and
		addresses.
Router# show ip aliases		Displays IP addresses mapped to TCP ports (aliases).
Router# show ip arp		Displays the IP ARP cache.
Router# show ip interface [type number]		Displays the usability status of interfaces.
Router# show ip irdp		Displays IRDP values.
Router# show ip masks address		Displays the masks used for network addresses and the number
		of subnets using each mask.
Router# show ip redirects		Displays the address of a default gateway.
Router# show ip route [address [mask]		Displays the current state of the routing table.
[longer-prefixes]] [protocol [process-id]]
Router# show ip route summary		Displays the current state of the routing table in summary form.
Router# ping [protocol] {host address}		Tests network node reachability (privileged mode).
Router# ping [protocol] {host address}		Tests network node reachability using a simple ping facility
		(user mode).
	Cisco IOS IP Configuration Guide

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