Revision 7673916f-3f62-4a7d-8559-6fd2eabf356d - Network Engineering Stack Exchange

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][1]][1]

[Download Tracer File][2]


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


  [1]: https://i.sstatic.net/JDfqC.png
  [2]: https://www.dropbox.com/s/m3iitpl7btxhyte/tracer.pkt?dl=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)#