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tinyCoder
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Computers on second router network not contacting with current router

I'm using Cisco Packet Tracer, computers on the same network can contact easily with each other, but when I send message from a network computer to the other, i get a FAILED message.

Configuration file is attached and this image illustrates my situation, can I get some help with that please?

enter image description here

Download Tracer File

Gateway for network PCs on the left (0, 2, 1)

10.1.4.1

Gateway for network PCs on the right (3, 4)

10.1.3.0

Router A CLI:

Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Router(config)#router rip
Router(config-router)#
Router(config-router)#exit
Router(config)#interface FastEthernet0/1
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/1
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/1
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#ip address 10.1.4.1 255.0.0.0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down
 
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
 
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#no network 10.0.0.0
Router(config-router)#no network 172.20.0.0
Router(config-router)#network 172.20.0.0
Router(config-router)#network 10.0.0.0
Router(config-router)#no network 10.0.0.0
Router(config-router)#
Router(config-router)#exit
Router(config)#ip route 172.21.0.0 255.255.0.0 10.1.4.1
%Invalid next hop address (it's this router)
Router(config)#ip route 172.21.0.0 255.255.0.0 10.1.4.1
%Invalid next hop address (it's this router)
Router(config)#ip route 172.21.0.0 255.255.0.0 10.1.4.1
%Invalid next hop address (it's this router)
Router(config)#
Router(config)#interface FastEthernet0/0
Router(config-if)#no ip address
Router(config-if)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router rip
Router(config-router)#network 10.0.0.0
Router(config-router)#no network 10.0.0.0
Router(config-router)#
Router(config-router)#exit
Router(config)#ip route 172.21.0.0 255.255.0.0 10.1.4.1
Router(config)#ip route 172.10.0.0 255.255.0.0 10.1.4.1
Router(config)#ip route 172.23.0.0 255.255.0.0 10.1.8.2
Router(config)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/1
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#ip address 10.1.4.1 255.0.0.0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface FastEthernet0/0
Router(config-if)#

Router B CLI:

Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#
Router(config-router)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#network 10.0.0.0
Router(config-router)#
Router(config-router)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#ip address 172.21.0.1 255.0.0.0
Router(config-if)#no ip address
Router(config-if)#ip address 172.21.0.1 255.255.0.0
Router(config-if)#
Router(config-if)#exit
Router(config)#
Router(config)#router rip
Router(config-router)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface Serial0/0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#no ip address
Router(config-if)#shutdown
 
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to administratively down
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down
 
Router(config-if)#exit
Router(config)#interface FastEthernet0/1
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/1
Router(config-if)#ip address 172.21.0.1 255.255.0.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to down
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/1
Router(config-if)#no ip address
Router(config-if)#
Router(config-if)#exit
Router(config)#interface Serial0/0/0
Router(config-if)#ip address 172.21.0.1 255.255.0.0
Router(config-if)#no shutdown
 
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
 
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
network 172.10.0.0
Router(config-router)#no network 172.21.0.0
Router(config-router)#no network 172.10.0.0
Router(config-router)#no network 10.0.0.0
Router(config-router)#network 172.21.0.0
Router(config-router)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down
 
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#end
Router#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
%SYS-5-CONFIG_I: Configured from console by console
N
Router#
Router#
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface Serial0/0/0
Router(config-if)#
Router(config-if)#end
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]
Router#
%SYS-5-CONFIG_I: Configured from console by console
 
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface FastEthernet0/0
Router(config-if)#
Router(config-if)#exit
Router(config)#interface FastEthernet0/0
Router(config-if)#ip address 10.1.3.0 255.0.0.0
Router(config-if)#
 
 
 
 
 
 
 
 
Router con0 is now available
 
 
 
 
 
 
Press RETURN to get started.
 
 
 
 
 
 
 
 
 
 
 
 
 
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface FastEthernet0/0
Router(config-if)#

show ip route output for each router:

Router B

Router#show ip route 172.21.0.0 255.255.0.0
Routing entry for 172.21.0.0/16
Known via "connected", distance 0, metric 0 (connected, via interface)
Redistributing via rip
Advertised by rip
Routing Descriptor Blocks:
* directly connected, via Serial0/0/0
Route metric is 0, traffic share count is 1

Router A

Router#show ip route 172.20.0.0 255.255.0.0
Routing entry for 172.20.0.0/16
Known via "connected", distance 0, metric 0 (connected, via interface)
Routing Descriptor Blocks:
* directly connected, via Serial0/0/0
Route metric is 0, traffic share count is 1
tinyCoder
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