I cannot ping a Fast Ethernet interface on R3 from R2 for some reason. But I can ping a FE interface on R2 from R3.
R2#ping 172.16.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 6/6/8 ms
R2#ping 69.70.16.147
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 69.70.16.147, timeout is 2 seconds:
U.U.U
Success rate is 0 percent (0/5)
R2#trace 69.70.16.147
Type escape sequence to abort.
Tracing the route to 69.70.16.147
1 172.16.1.2 5 msec 6 msec 7 msec
2 172.16.1.2 !H * !H
3
R2#show ip int brief
Interface IP-Address OK? Method Status Protocol
Serial0/0 172.16.1.1 YES manual up up
Serial1/0 172.16.0.2 YES manual up up
Ethernet2/0 unassigned YES unset administratively down down
FastEthernet3/0 10.50.0.1 YES manual up up
R2#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
10.0.0.0/24 is subnetted, 1 subnets
C 10.50.0.0 is directly connected, FastEthernet3/0
69.0.0.0/29 is subnetted, 1 subnets
S 69.70.16.144 [1/0] via 172.16.1.2
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 172.16.0.0/30 is directly connected, Serial1/0
C 172.16.0.1/32 is directly connected, Serial1/0
C 172.16.1.0/30 is directly connected, Serial0/0
S 192.168.1.0/24 [1/0] via 172.16.0.1
R3# ping 172.16.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 5/6/8 ms
R3#ping 10.50.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.50.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 6/6/7 ms
R3#show ip int brief
Interface IP-Address OK? Method Status Protocol
Serial0/0 unassigned YES unset down down
Serial1/0 172.16.1.2 YES manual up up
Ethernet2/0 unassigned YES unset administratively down down
FastEthernet3/0 69.70.16.147 YES manual up down
R3#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
10.0.0.0/24 is subnetted, 1 subnets
S 10.50.0.0 [1/0] via 172.16.1.1
172.16.0.0/16 is variably subnetted, 4 subnets, 3 masks
S 172.16.0.0/24 [1/0] via 172.16.1.1
S 172.16.0.0/30 [1/0] via 172.16.1.1
C 172.16.1.0/30 is directly connected, Serial1/0
C 172.16.1.1/32 is directly connected, Serial1/0
S 192.168.1.0/24 [1/0] via 172.16.1.1
