Cisco Systems ISR4451XK9 manual Configuration Examples, Configuring IP Routing and IP Protocols

Chapter 4 Initial Configuration

Performing the Initial Configuration on the Router

	Command or Action	Purpose
Step 8
	end	Returns to privileged EXEC mode.
	Example:
	Router(config)# end
Step 9
	show ip interface brief	Displays a brief status of the interfaces that are configured
		for IP.
	Example:	• Verify that the Ethernet interfaces are up and
	Router# show ip interface brief	configured correctly.

Configuration Examples

Configuring the GigabitEthernet Interface: Example

!

interface GigabitEthernet0/0/0 description GE int to HR group

ip address 172.16.3.3 255.255.255.0 duplex auto

speed auto no shutdown

!

Sample Output for the show ip interface brief Command

Router#show ip interface brief
Interface	IP-Address	OK? Method	Status	Protocol
GigabitEthernet0/0/0	unassigned	YES NVRAM	administratively down down
GigabitEthernet0/0/1	unassigned	YES NVRAM	administratively down down
GigabitEthernet0/0/2	unassigned	YES NVRAM	administratively down down
GigabitEthernet0/0/3	unassigned	YES NVRAM	administratively down down
GigabitEthernet0	10.0.0.1	YES manual	up	up

Specifying a Default Route or Gateway of Last Resort

This section describes how to specify a default route with IP routing enabled. For alternative methods of specifying a default route, see the Configuring a Gateway of Last Resort Using IP Commands tech note.

The Cisco IOS-XE software uses the gateway (router) of last resort if it does not have a better route for a packet and if the destination is not a connected network. This section describes how to select a network as a default route (a candidate route for computing the gateway of last resort). The way in which routing protocols propagate the default route information varies for each protocol.

Configuring IP Routing and IP Protocols

For comprehensive configuration information about IP routing and IP routing protocols, see the Configuring IP Routing Protocol-Independent Feature on Cisco.com.

	Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01		4-12