위와 같이 실습 환경을 구성한다.
모든 라우터에 hostname, PW, no ip domain-lookup은 설정한다.
라우터 IP 설정
R1
R1(config)#int g0/0
R1(config-if)#ip address 1.4.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
R1(config-if)#int s0/0/0
R1(config-if)#ip address 1.4.4.1 255.255.255.0
R1(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
R1(config-if)#int s0/0/1
R1(config-if)#ip address 1.4.5.1 255.255.255.0
R1(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to down
R1(config)#do show ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 1.4.1.1 YES manual up up
GigabitEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 1.4.4.1 YES manual up up
Serial0/0/1 1.4.5.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
R2
R2(config)#int g0/0
R2(config-if)#ip address 1.4.2.1 255.255.255.0
R2(config-if)#no sh
R2(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
R2(config-if)#int s0/0/0
R2(config-if)#ip address 1.4.4.2 255.255.255.0
R2(config-if)#no sh
R2(config-if)#
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
R2(config-if)#do show ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 1.4.2.1 YES manual up up
GigabitEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 1.4.4.2 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Vlan1 unassigned YES unset administratively down down
R3
R3(config)#int g0/0
R3(config-if)#ip address 1.4.3.1 255.255.255.0
R3(config-if)#no sh
R3(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
R3(config-if)#int s0/0/0
R3(config-if)#ip address 1.4.5.2 255.255.255.0
R3(config-if)#no sh
R3(config)#do show ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 1.4.3.1 YES manual up up
GigabitEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 1.4.5.2 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Vlan1 unassigned YES unset administratively down down
라우팅 설정
R1
R1(config)#ip route 1.4.2.0 255.255.255.0 1.4.4.2
R1(config)#ip route 1.4.3.0 255.255.255.0 1.4.5.2
R1(config)#do show ip route
Codes: L - local, 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, 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
1.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
C 1.4.1.0/24 is directly connected, GigabitEthernet0/0
L 1.4.1.1/32 is directly connected, GigabitEthernet0/0
S 1.4.2.0/24 [1/0] via 1.4.4.2
S 1.4.3.0/24 [1/0] via 1.4.5.2
C 1.4.4.0/24 is directly connected, Serial0/0/0
L 1.4.4.1/32 is directly connected, Serial0/0/0
C 1.4.5.0/24 is directly connected, Serial0/0/1
L 1.4.5.1/32 is directly connected, Serial0/0/1
R2
R2(config)#ip route 0.0.0.0 0.0.0.0 serial0/0/0
%Default route without gateway, if not a point-to-point interface, may impact performance
R2(config)#do show ip route
Codes: L - local, 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, 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 0.0.0.0 to network 0.0.0.0
1.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 1.4.2.0/24 is directly connected, GigabitEthernet0/0
L 1.4.2.1/32 is directly connected, GigabitEthernet0/0
C 1.4.4.0/24 is directly connected, Serial0/0/0
L 1.4.4.2/32 is directly connected, Serial0/0/0
S* 0.0.0.0/0 is directly connected, Serial0/0/0
R3
R3(config)#ip route 0.0.0.0 0.0.0.0 serial0/0/0
%Default route without gateway, if not a point-to-point interface, may impact performance
R3(config)#do show ip route
Codes: L - local, 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, 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 0.0.0.0 to network 0.0.0.0
1.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 1.4.3.0/24 is directly connected, GigabitEthernet0/0
L 1.4.3.1/32 is directly connected, GigabitEthernet0/0
C 1.4.5.0/24 is directly connected, Serial0/0/0
L 1.4.5.2/32 is directly connected, Serial0/0/0
S* 0.0.0.0/0 is directly connected, Serial0/0/0
TEST
PC1
C:\>ping 1.4.1.12
Pinging 1.4.1.12 with 32 bytes of data:
Reply from 1.4.1.12: bytes=32 time<1ms TTL=128
Reply from 1.4.1.12: bytes=32 time<1ms TTL=128
Reply from 1.4.1.12: bytes=32 time<1ms TTL=128
Reply from 1.4.1.12: bytes=32 time=3ms TTL=128
Ping statistics for 1.4.1.12:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 3ms, Average = 0ms
C:\>ping 1.4.2.12
Pinging 1.4.2.12 with 32 bytes of data:
Request timed out.
Reply from 1.4.2.12: bytes=32 time=7ms TTL=126
Reply from 1.4.2.12: bytes=32 time=4ms TTL=126
Reply from 1.4.2.12: bytes=32 time=4ms TTL=126
Ping statistics for 1.4.2.12:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 4ms, Maximum = 7ms, Average = 5ms
C:\>ping 1.4.2.11
Pinging 1.4.2.11 with 32 bytes of data:
Request timed out.
Reply from 1.4.2.11: bytes=32 time=5ms TTL=126
Reply from 1.4.2.11: bytes=32 time=4ms TTL=126
Reply from 1.4.2.11: bytes=32 time=4ms TTL=126
Ping statistics for 1.4.2.11:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 4ms, Maximum = 5ms, Average = 4ms
C:\>ping 1.4.3.11
Pinging 1.4.3.11 with 32 bytes of data:
Request timed out.
Reply from 1.4.3.11: bytes=32 time=4ms TTL=126
Reply from 1.4.3.11: bytes=32 time=5ms TTL=126
Reply from 1.4.3.11: bytes=32 time=8ms TTL=126
Ping statistics for 1.4.3.11:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 4ms, Maximum = 8ms, Average = 5ms
C:\>ping 1.4.3.12
Pinging 1.4.3.12 with 32 bytes of data:
Request timed out.
Reply from 1.4.3.12: bytes=32 time=1ms TTL=126
Reply from 1.4.3.12: bytes=32 time=1ms TTL=126
Reply from 1.4.3.12: bytes=32 time=4ms TTL=126
Ping statistics for 1.4.3.12:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 4ms, Average = 2ms
PC2
C:\>ping 1.4.1.11
Pinging 1.4.1.11 with 32 bytes of data:
Reply from 1.4.1.11: bytes=32 time=6ms TTL=126
Reply from 1.4.1.11: bytes=32 time=4ms TTL=126
Reply from 1.4.1.11: bytes=32 time=4ms TTL=126
Reply from 1.4.1.11: bytes=32 time=4ms TTL=126
Ping statistics for 1.4.1.11:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 4ms, Maximum = 6ms, Average = 4ms
C:\>ping 1.4.3.11
Pinging 1.4.3.11 with 32 bytes of data:
Reply from 1.4.3.11: bytes=32 time=10ms TTL=125
Reply from 1.4.3.11: bytes=32 time=5ms TTL=125
Reply from 1.4.3.11: bytes=32 time=5ms TTL=125
Reply from 1.4.3.11: bytes=32 time=5ms TTL=125
Ping statistics for 1.4.3.11:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 5ms, Maximum = 10ms, Average = 6ms
PC3
C:\>ping 1.4.1.12
Pinging 1.4.1.12 with 32 bytes of data:
Request timed out.
Reply from 1.4.1.12: bytes=32 time=4ms TTL=126
Reply from 1.4.1.12: bytes=32 time=7ms TTL=126
Reply from 1.4.1.12: bytes=32 time=4ms TTL=126
Ping statistics for 1.4.1.12:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 4ms, Maximum = 7ms, Average = 5ms
C:\>ping 1.4.2.12
Pinging 1.4.2.12 with 32 bytes of data:
Reply from 1.4.2.12: bytes=32 time=10ms TTL=125
Reply from 1.4.2.12: bytes=32 time=5ms TTL=125
Reply from 1.4.2.12: bytes=32 time=9ms TTL=125
Reply from 1.4.2.12: bytes=32 time=5ms TTL=125
Ping statistics for 1.4.2.12:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 5ms, Maximum = 10ms, Average = 7msping이 잘 가는 것을 확인할 수 있다.
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