Topology

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Configure IP

PC0:192.168.1.1/24
PC1:192.168.4.1/24
PC2:192.168.4.2/24

Router0：
Fa0/0：192.168.1.254/24
Fa0/1：192.168.2.1/24

Router1：
Fa0/0：192.168.2.2/24
Fa0/1：192.168.3.1/24

Router2:
Fa0/0: 192.168.3.2/24
Fa0/1: 192.168.4.254/24
For the full version, go to: [Routing and Switching Technology] Cisco Packet Tracer Basic Tutorial (2)

Directly connected network segment and non-directly connected network segment

What are the directly connected network segment and the non-directly connected network segment of the router?
As the name implies, the network segment next to the router is the directly connected network segment, and the network segment that is not directly adjacent to each other and is separated by something in the middle is called the non-directly connected network segment.
Take Router1 as an example:
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Configure static routing

Static routing configuration is cumbersome, and the scope of application is small.
Each router needs to configure its non-directly connected network segment
Syntax:
ip router non-directly connected network segment subnet mask next hop address
Take router1 as an example:
it The non-directly connected network segment is 192.168.1.0/24 and 192.168.4.0/24. The
next hop address is the first port that the router passes through when it leads to the non-directly connected network segment you set.
It can be understood as going to The first station that the destination bus passes through.
For example, Router1 goes to the 192.168.1.0/24 network segment:
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the IP address of f0/1 is its next-hop address.
The command is: (in global configuration mode) ip route 192.168.1.0 255.255.255.0 192.168.2.1
The complete process is as follows
Router0:

Router1: insert image description here
Router2:

You can wait for a while after the configuration, enter show ip route (sh ip ro) in the privileged mode to view the routing table

C is the directly connected network segment
S is the static route configured for us,
now you can access devices in different network segments (Ping once failed
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, you can try to ping again)