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I have three routers A B C
Router A directly connected to router B and C (f0/0 f0/1).
Router A ---------------------------------- Router>show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, FastEthernet0/0 2.0.0.0/24 is subnetted, 1 subnets C 2.2.2.0 is directly connected, FastEthernet0/1
Router>show ip int br Interface IP-Address OK? Method Status Protocol FastEthernet0/0 1.1.1.1 YES manual up up FastEthernet0/1 2.2.2.2 YES manual up up Vlan1 unassigned YES unset administratively down down
Router B --------------------------------------------------------------------------------- Router#show ip route
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, FastEthernet0/0 2.0.0.0/24 is subnetted, 1 subnets S 2.2.2.0 [1/0] via 1.1.1.0 [1/0] via 1.1.1.1
Router#show ip int br Interface IP-Address OK? Method Status Protocol FastEthernet0/0 1.1.1.2 YES manual up up FastEthernet0/1 unassigned YES unset administratively down down Vlan1 unassigned YES unset administratively down down
Router C ------------------------------------------------------------------------------- Router#show ip route
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets S 1.1.1.0 [1/0] via 2.2.2.0 [1/0] via 2.2.2.2 2.0.0.0/24 is subnetted, 1 subnets C 2.2.2.0 is directly connected, FastEthernet0/0
Router#sh ip int br Interface IP-Address OK? Method Status Protocol FastEthernet0/0 2.2.2.3 YES manual up up FastEthernet0/1 unassigned YES unset administratively down down Vlan1 unassigned YES unset administratively down down
When I try to ping from router B to C. It's give me this error
Router#ping 2.2.2.2
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
IP: tableid=0, s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), routed via RIB
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, sending
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, encapsulation failed . IP: tableid=0, s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), routed via RIB
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, sending ! IP: tableid=0, s=2.2.2.2 (FastEthernet0/0), d=1.1.1.2 (FastEthernet0/0), routed via RIB
IP: s=2.2.2.2 (FastEthernet0/0), d=1.1.1.2 (FastEthernet0/0), len 128, rcvd 3
IP: tableid=0, s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), routed via RIB
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, sending
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, encapsulation failed . IP: tableid=0, s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), routed via RIB
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, sending ! IP: tableid=0, s=2.2.2.2 (FastEthernet0/0), d=1.1.1.2 (FastEthernet0/0), routed via RIB
IP: s=2.2.2.2 (FastEthernet0/0), d=1.1.1.2 (FastEthernet0/0), len 128, rcvd 3
IP: tableid=0, s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), routed via RIB
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, sending
IP: s=1.1.1.2 (local), d=2.2.2.2 (FastEthernet0/0), len 128, encapsulation failed . Success rate is 40 percent (2/5), round-trip min/avg/max = 3/4/5 ms
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