Router 1
En // user access privileges model
Config t // privilege into the global
Int f0 / 1 // enter f0 / 1 Interface
Ip add 192.168.1.1 255 255 255.0 // configure ip address with subnet mask
No shut // Open Interface
Int f0 / 0 // enter f0 / 0 Interface
Ip add 192.168.2.1 255.255.255.0 // configured IP address with subnet mask
No sh // Open Interface
Ip route 192.168.3.0 255.255.255.0 192.168.2.2 // configure a static route, the 3.0 segment added to the routing table
Ip route 192.168.4.0 255.255.255.0 192.168.2.2 // configured static route 4.0 segment added to the routing table
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Router 2
En // user access privileges model
Config t // privilege into the global
Int f0 / 1 // enter f0 / 1 Interface
Ip add 192.168.2.2 255 255 255.0 // configure ip address with subnet mask
No shut // Open Interface
Int f0 / 0 // enter f0 / 0 Interface
Ip add 192.168.3.1 255.255.255.0 // configured IP address with subnet mask
No sh // Open Interface
Ip route 192.168.1.0 255.255.255.0 192.168.2.1 // configure a static route, the 1.0 segment added to the routing table
Ip route 192.168.4.0 255.255.255.0 192.168.3.2 // configured static route 4.0 segment added to the routing table
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Router 3
En // user access privileges model
Config t // privilege into the global
Int f0 / 1 // enter f0 / 1 Interface
Ip add 192.168.3.2 255 255 255.0 // configure ip address with subnet mask
No shut // Open Interface
Int f0 / 0 // enter f0 / 0 Interface
Ip add 192.168.4.1 255.255.255.0 // configured IP address with subnet mask
No sh // Open Interface
Ip route 192.168.1.0 255.255.255.0 192.168.3.1 // configure a static route, the 1.0 segment added to the routing table
Ip route 192.168.2.0 255.255.255.0 192.168.3.1 // configure a static route, the 2.0 segment added to the routing table
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PC1
IP Address: 192.168.1.2
Subnet Mask: 255.255.255.0
Gateway: 192.168.1.1
========================================================================================================
PC2
IP Address: 192.168.4.2
Subnet Mask: 255.255.255.0
Gateway: 192.168.4.1