Success rate is 100 percent (5/5), round-trip min/avg/max = 0/4/20 ms Sending 5, 100-byte ICMP Echos to 5.0.0.1, timeout is 2 seconds: Success rate is 100 percent (5/5), round-trip min/avg/max = 14/38/52 ms Sending 5, 100-byte ICMP Echos to 4.0.0.1, timeout is 2 seconds: If you wanted to do what you describe, then youd simply assign that IP to one of your real interfaces and turn off reverse path filtering and enable ip forwarding so it was reachable from all your real interfaces. Sending 5, 100-byte ICMP Echos to 3.0.0.1, timeout is 2 seconds: Loopback is the only interface that behaves that way (in contrast to other dummy interfaces such as tun/tap and bridge interfaces which are routable). Sending 5, 100-byte ICMP Echos to 2.0.0.1, timeout is 2 seconds: via 1.0.0.1, 00:00:26, FastEthernet0/0ħ.0.0.0/8 directly connected, Loopback3 Now check every interfaces including loopback interfaces by pinging ip assigned on each loopback interfaces: R1#ping 2.0.0.1 R2# See RIP Databases on Router R2: R2#show ip rip database Let’s check Router R2 interfaces ip addresses: R2#show ip interface briefĬonfigure Routing RIP on Router R2: R2#config terminal R1# Configure IP ADDRESS on INTERFACES OF ROUTER R2: Router>enable R1(config)#exit Now see RIP Routing DATABASES on Router R1: R1#show ip rip databaseġ.0.0.0/8 directly connected, FastEthernet0/0 Remember you also have to include network created by Virtual Interfaces what we call Loopback interfaces. Vlan1 unassigned YES unset administratively down down #Loopback interface manualInterface IP-Address OK? Method Status ProtocolįastEthernet0/0 1.0.0.1 YES manual up downįastEthernet0/1 unassigned YES unset administratively down down R1(config-if)#exit See or verify router interface ip address using below command: R1#show ip int br R1(config-if)#exit R1(config)#int loopback 3 Now go to loopback Interface and assign ip address on it. Router>enableĮnter configuration commands, one per line. Here I am going to assign ip address on router real interfaces and also going to create virtual interfaces and loopback interfaces and assign ip address on loopback interfaces.
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