Introduction to Routing and Packet Forwarding - Routing Protocols and Concepts - page 22

Table 1-4 Addressing Table for Figure 1-11

Device Interface IP Address Subnet Mask Default Gateway

R1 Fa0/0 192.168.1.1 255.255.255.0 —

S0/0/0 192.168.2.1 255.255.255.0 —

R2 S0/0/0 192.168.2.2 255.255.255.0 —

S0/0/1 192.168.3.1 255.255.255.0 —

R3 S0/0/1 192.168.3.2 255.255.255.0 —

Fa0/0 192.168.4.1 255.255.255.0 —

PC1 NIC 192.168.1.10 255.255.255.0 192.168.1.1

PC3 NIC 192.168.4.10 255.255.255.0 192.168.4.1

Example 1-1 Routing Tables for Figure 1-11

R1# show ip route

<output omitted>

Gateway of last resort is not set

C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial0/0/0
R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:04, Serial0/0/0
R 192.168.4.0/24 [120/2] via 192.168.2.2, 00:00:04, Serial0/0/0
R2# show ip route
<output omitted>

Gateway of last resort is not set

R 192.168.1.0/24 [120/1] via 192.168.2.1, 00:00:06, Serial0/0/0
C 192.168.2.0/24 is directly connected, Serial0/0/0
C 192.168.3.0/24 is directly connected, Serial0/0/1
R 192.168.4.0/24 [120/1] via 192.168.3.2, 00:00:06, Serial0/0/1
R3# show ip route
<output omitted>

Gateway of last resort is not set

R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:07, Serial0/0/1
R 192.168.2.0/24 [120/1] via 192.168.3.1, 00:00:07, Serial0/0/1
C 192.168.3.0/24 is directly connected, Serial0/0/1
C 192.168.4.0/24 is directly connected, FastEthernet0/0