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토폴로지

 

1. PC IP 주소 설정

 

 

  PC0 PC1 PC2 PC3
IP Address 195.110.10.11 195.110.10.12 195.120.20.21 195.120.20.22
Subnet Mask 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0
Gateway 192.110.10.1 192.110.10.1 195.120.20.1 195.120.20.1

 

2. 라우터 인터페이스 설정

 

R1 라우터 인터페이스 설정

 

Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hostname R1
R1(config)#interface gi0/0
R1(config-if)#ip address 195.110.10.1 255.255.255.0
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)#exit
R1(config)#
R1(config)#interface gi0/1
R1(config-if)#ip address 195.100.0.1 255.255.255.0
R1(config-if)#no shutdown

R1(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up

R1(config-if)#exit
R1(config)#exit
R1#
%SYS-5-CONFIG_I: Configured from console by console

 

R2 라우터 인터페이스 설정

 

Router>enable
Router#
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hostname R2
R2(config)#interface gi0/0
R2(config-if)#ip address 195.120.20.1 255.255.255.0
R2(config-if)#no shutdown

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)#exit
R2(config)#interface gi0/1
R2(config-if)#ip address 195.100.0.2 255.255.255.0
R2(config-if)#no shutdown

R2(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up

R2(config-if)#exit

 

3. 라우팅 테이블 확인 (show ip route)

 

R1 라우팅 테이블

 

R1#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

     195.100.0.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.100.0.0/24 is directly connected, GigabitEthernet0/1
L       195.100.0.1/32 is directly connected, GigabitEthernet0/1
     195.110.10.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.110.10.0/24 is directly connected, GigabitEthernet0/0
L       195.110.10.1/32 is directly connected, GigabitEthernet0/0

 

R2 라우팅 테이블

 

R2(config)#exit
R2#
%SYS-5-CONFIG_I: Configured from console by console

R2#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

     195.100.0.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.100.0.0/24 is directly connected, GigabitEthernet0/1
L       195.100.0.2/32 is directly connected, GigabitEthernet0/1
     195.120.20.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.120.20.0/24 is directly connected, GigabitEthernet0/0
L       195.120.20.1/32 is directly connected, GigabitEthernet0/0

 

Request timed out 이유(PC0 > PC2)

- 라우팅 테이블에 정보가 없음

- R1에서 195.120.20.0 대역 업데이트 필요

- R2에서 195.110.10.0 대역 업데이트 필요

 

4. Static Routing 설정

 

R1 라우터

 

R1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ip route 195.120.20.0 255.255.255.0 ?
  A.B.C.D          Forwarding router's address
  Dialer           Dialer interface
  Ethernet         IEEE 802.3
  FastEthernet     FastEthernet IEEE 802.3
  GigabitEthernet  GigabitEthernet IEEE 802.3z
  Loopback         Loopback interface
  Null             Null interface
  Serial           Serial
  Vlan             Catalyst Vlans
R1(config)#ip route 195.120.20.0 255.255.255.0 195.100.0.2
R1(config)#exit
R1#
%SYS-5-CONFIG_I: Configured from console by console

 

R2 라우터

 

R2#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ip route 195.110.10.0 255.255.255.0 195.100.0.1
R2(config)#exit
R2#
%SYS-5-CONFIG_I: Configured from console by console

 

 

5. 라우팅 테이블 확인

 

R1 라우팅 테이블

 

R1#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

     195.100.0.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.100.0.0/24 is directly connected, GigabitEthernet0/1
L       195.100.0.1/32 is directly connected, GigabitEthernet0/1
     195.110.10.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.110.10.0/24 is directly connected, GigabitEthernet0/0
L       195.110.10.1/32 is directly connected, GigabitEthernet0/0
S    195.120.20.0/24 [1/0] via 195.100.0.2

 

R2 라우팅 테이블

 

R2#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

     195.100.0.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.100.0.0/24 is directly connected, GigabitEthernet0/1
L       195.100.0.2/32 is directly connected, GigabitEthernet0/1
S    195.110.10.0/24 [1/0] via 195.100.0.1
     195.120.20.0/24 is variably subnetted, 2 subnets, 2 masks
C       195.120.20.0/24 is directly connected, GigabitEthernet0/0
L       195.120.20.1/32 is directly connected, GigabitEthernet0/0

 

6. 통신 확인

 

PC0에서 PC2로 통신되는 것을 확인할 수 있음

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