4-17
Cisco 2900 and 3900 Series Hardware Installation
OL-18712-01
Chapter 4      Configuring the Router
  Performing the Initial Configuration on the Router
Examples
Specifying a Default Route: Example
!
ip routing
!
ip route 192.168.24.0 255.255.255.0 172.28.99.2
!
ip default-network 192.168.24.0
!
Sample Output for the show ip route Command
Router# show ip route 
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
Gateway of last resort is 172.28.99.2 to network 192.168.24.0
 
     172.24.0.0 255.255.255.0 is subnetted, 1 subnets
C       172.24.192.0 is directly connected, FastEthernet0
S       172.24.0.0 255.255.0.0 [1/0] via 172.28.99.0 
S*    192.168.24.0 [1/0] via 172.28.99.2
     172.16.0.0 255.255.255.0 is subnetted, 1 subnets
C       172.16.99.0 is directly connected, FastEthernet1
Router#
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.
Command or Action Purpose