---- do show ip route로 확인한 ospf 설정 해줘야 하는 부분 (빨간표시)
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 1.1.1.0/24 is directly connected, FastEthernet0/0
L 1.1.1.1/32 is directly connected, FastEthernet0/0
203.230.7.0/24 is variably subnetted, 4 subnets, 2 masks
C 203.230.7.0/30 is directly connected, Serial0/2/0
L 203.230.7.1/32 is directly connected, Serial0/2/0
C 203.230.7.8/30 is directly connected, Serial0/2/1
L 203.230.7.10/32 is directly connected, Serial0/2/1
--OSPF 설정 명령어 ( R0 )---
Router(config)#router ospf 1
Router(config-router)#network 1.1.1.0 0.0.0.255 area 0
Router(config-router)#network 203.230.7.0 0.0.0.3 area 0
Router(config-router)#network 203.230.7.8 0.0.0.3 area 0
--OSPF 설정 명령어 ( R1 )---
Router(config)#router ospf 1
Router(config-router)#network 2.2.2.0 0.0.0.255 area 0
Router(config-router)#network 203.230.7.0 0.0.0.3 area 0
Router(config-router)#network 203.230.7.4 0.0.0.3 area 0
--OSPF 설정 명령어 ( R2 )---
Router(config)#router ospf 1
Router(config-router)#network 3.3.3.0 0.0.0.255 area 0
Router(config-router)#network 203.230.7.4 0.0.0.3 area 0
Router(config-router)#network 203.230.7.8 0.0.0.3 area 0
PC간 통신 (PING) 확인
------ 특정 pc 통신 못하게 하는 방법 (pc1은 허용 , pc0은 불가능하게 하는방법 ---------
Router(config)#access-list 1 ?
deny Specify packets to reject
permit Specify packets to forward
remark Access list entry comment
Router(config)#access-list 1 permit 1.1.1.3 0.0.0.0
Router(config)#access-list 1 deny any
Router(config)#do show access-list
Standard IP access list 1
10 permit host 1.1.1.3
20 deny any
Router(config)#int fa0/0
Router(config-if)#ip access-group 1 ?
in inbound packets
out outbound packets
Router(config-if)#ip access-group 1 in
위 설정을 취소하고 싶으면 no access-list 1
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