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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Appendix A      Cisco IOS CLI for Initial Configuration
  Using the Cisco IOS CLI to Perform Initial Configuration
6. end 
7. show ip route 
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode. 
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
ip routing 
Example:
Router(config)# ip routing
Enables IP routing.
Step 4
ip route dest-prefix mask next-hop-ip-address 
[admin-distance] [permanent] 
Example:
Router(config)# ip route 192.168.24.0 
255.255.255.0 172.28.99.2
Establishes a static route.
Step 5
ip default-network network-number 
or
ip route dest-prefix mask next-hop-ip-address 
Example:
Router(config)# ip default-network 192.168.24.0 
Example:
Router(config)# ip route 0.0.0.0 0.0.0.0 
172.28.99.1 
Selects a network as a candidate route for computing the 
gateway of last resort.
Creates a static route to network 0.0.0.0 0.0.0.0 for 
computing the gateway of last resort.
Step 6
end 
Example:
Router(config)# end
Returns to privileged EXEC mode.
Step 7
show ip route 
Example:
Router# show ip route 
Displays the current routing table information.
• Verify that the gateway of last resort is set.