CCNA Cisco Certified Network Associate Study Guide - FTP Server

IP Routing in Our Network 249
The following router output shows the configuration of static routes on
the 2621A router and the routing table after the configuration. For the
2621A router to find the remote networks, an entry is placed in the routing
table describing the network, the mask, and where to send the packets.
Notice that each static route sends the packets to 172.16.10.2, which is the
2621 router’s next hop.
2621A(Config)#ip route 172.16.20.0 255.255.255.0
172.16.10.2
2621A(Config)#ip route 172.16.30.0 255.255.255.0
172.16.10.2
2621A(Config)#ip route 172.16.40.0 255.255.255.0
172.16.10.2
2621A(Config)#ip route 172.16.50.0 255.255.255.0
172.16.10.2
After the router is configured, you can type show running-config and
show ip route to see the static routes. Remember that if the routes don’t
appear in the routing table, it is because the router cannot communicate to
the next hop address you configured. You can use the permanent parameter
to keep the route in the routing table even if the next hop device cannot be
contacted.
2621A#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP,
M – [output cut]
Gateway of last resort is not set
172.16.0.0/24 is subnetted, 5 subnets
S 172.16.50.0 [1/0] via 172.16.10.2
S 172.16.40.0 [1/0] via 172.16.10.2
S 172.16.30.0 [1/0] via 172.16.10.2
S 172.16.20.0 [1/0] via 172.16.10.2
C 172.16.10.0 is directly connected, FastEthernet0/0
2621A#
The 2621 router now has all the information it needs so that it can communicate
to the other remote networks. However, if the 2501A router is not
configured with all the same information, the packets will be discarded
at 2501A.