ISP#sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
Serial0/0
50.0.0.2 YES manual up down
Serial0/1
60.0.0.2 YES manual up up
R1(config-if)#ip add 50.0.0.1 255.255.255.0
R1(config-if)#no shut
R2(config)#int s0/0
R2(config-if)#ip add 60.0.0.1 255.255.255.0
R2(config-if)#no shut
ISP#ping 50.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 50.0.0.1, timeout is 2
seconds:
!!!!!
R1(config)#ip route 0.0.0.0 0.0.0.0 50.0.0.2
R2(config)#ip route 0.0.0.0 0.0.0.0 60.0.0.2
R2(config)#do ping 50.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 50.0.0.1, timeout is 2
seconds:
!!!!!
R1(config)#int tunnel 0
R1(config-if)#tunnel mode gre ip
R1(config-if)#ip add 192.168.10.1 255.255.255.0
R1(config-if)#tunnel source 50.0.0.1
R1(config-if)#tunnel destination 60.0.0.1
R1(config-if)#no shut
R1(config-if)#end
R1#sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
Serial0/0
50.0.0.1 YES manual up up
Serial0/1
unassigned YES unset administratively down down
Serial0/2
unassigned YES unset administratively down down
Serial0/3
unassigned YES unset administratively down down
Tunnel0
192.168.10.1 YES manual up up
R2(config)#int tunnel 0
R2(config-if)#tunnel mode gre ip
R2(config-if)#ip add 192.168.10.2 255.255.255.0
R2(config-if)#tunnel source 60.0.0.1
R2(config-if)#tunnel destination 50.0.0.1
R2(config-if)#no shut
R2(config-if)#end
R2#sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
Serial0/0
60.0.0.1 YES manual up up
Serial0/1
unassigned YES unset administratively down down
Serial0/2
unassigned YES unset administratively down down
Serial0/3
unassigned YES unset administratively down down
Tunnel0
192.168.10.2 YES manual up up
R2#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
64/91/128 ms
R2#ping 50.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 50.0.0.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
68/92/104 ms
ISP#sho ip route
50.0.0.0/24 is
subnetted, 1 subnets
C 50.0.0.0 is
directly connected, Serial0/0
60.0.0.0/24 is
subnetted, 1 subnets
C 60.0.0.0 is
directly connected, Serial0/1
R2#sho ip route
Codes: C - connected, S - static, 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
i - IS-IS, su -
IS-IS summary, 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 60.0.0.2 to network 0.0.0.0
C 192.168.10.0/24
is directly connected, Tunnel0
60.0.0.0/24 is
subnetted, 1 subnets
C 60.0.0.0 is
directly connected, Serial0/0
S* 0.0.0.0/0 [1/0]
via 60.0.0.2
R2(config)#int loopback 80
R2(config-if)#ip add 80.0.0.1 255.255.255.0
R2(config-if)#no shut
R2(config-if)#exit
R2(config)#router eigrp 100
R2(config-router)#net 80.0.0.0
R2(config-router)#net 192.168.10.0
R2(config-router)#no au
R2(config-router)#end
R2#sho ip route
Codes: C - connected, S - static, 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
i - IS-IS, su -
IS-IS summary, 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 60.0.0.2 to network 0.0.0.0
80.0.0.0/24 is
subnetted, 1 subnets
C 80.0.0.0 is
directly connected, Loopback80
C 192.168.10.0/24
is directly connected, Tunnel0
60.0.0.0/24 is
subnetted, 1 subnets
C 60.0.0.0 is
directly connected, Serial0/0
S* 0.0.0.0/0 [1/0]
via 60.0.0.2
R1(config)#router eigrp 100
R1(config-router)#net 192.168.10.0
R1(config-router)#no au
R1(config-router)#
R1#sho ip route
Codes: C - connected, S - static, 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
i - IS-IS, su -
IS-IS summary, 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 50.0.0.2 to network 0.0.0.0
50.0.0.0/24 is
subnetted, 1 subnets
C 50.0.0.0 is
directly connected, Serial0/0
80.0.0.0/24 is
subnetted, 1 subnets
D 80.0.0.0 [90/297372416] via
192.168.10.2, 00:00:19, Tunnel0
C 192.168.10.0/24
is directly connected, Tunnel0
S* 0.0.0.0/0 [1/0]
via 50.0.0.2
R2#ping 80.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 80.0.0.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
1/2/4 ms
R2#ping 192.168.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
64/85/100 ms
R1# ping 80.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 80.0.0.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
96/100/108 ms
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