[configuring] OSPF virtual-link.pkt
0.08MB
토폴로지
<루프백 : area 0>
더보기
[1.1.1.1] Router(config)# do sh ip ro
config
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ip : ○ 10.0.0.0 ○ 20.0.0.0 ○ 30.0.0.0 ○ 40.0.0.0 ○ 50.0.0.0.0 ○
60.0.0.0
○ 70.0.0.0 ○ 80.0.0.0 ○
ex) int se0/0/0 | ip addr 10.0.0.1 255.255.255.0
-----------------------------------------------------------------
lo : 1.1.1.1 - 2.2.2.2 - 3.3.3.3 - 4.4.4.4 - 5.5.5.5 - 6.6.6.6
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7.7.7.7 - 8.8.8.8.8 - 9.9.9.9
ex) int lo 0 | ip addr 1.1.1.1 255.255.255.255
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[1.1.1.1]
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 2 virtual-link 2.2.2.2
network 1.1.1.1 0.0.0.0 area 0
network 10.0.0.0 0.0.0.255 area 2
!
[2.2.2.2]
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 2 virtual-link 1.1.1.1
area 1 virtual-link 3.3.3.3
network 2.2.2.2 0.0.0.0 area 0
network 10.0.0.0 0.0.0.255 area 2
network 20.0.0.0 0.0.0.255 area 1
!
[3.3.3.3]
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 1 virtual-link 2.2.2.2
network 30.0.0.0 0.0.0.255 area 0
network 3.3.3.3 0.0.0.0 area 0
network 20.0.0.0 0.0.0.255 area 1
!
[4.4.4.4]
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
area 3 virtual-link 5.5.5.5
network 30.0.0.0 0.0.0.255 area 0
network 60.0.0.0 0.0.0.255 area 0
network 4.4.4.4 0.0.0.0 area 0
network 40.0.0.0 0.0.0.255 area 3
!
[5.5.5.5]
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 3 virtual-link 4.4.4.4
area 4 virtual-link 6.6.6.6
network 5.5.5.5 0.0.0.0 area 0
network 40.0.0.0 0.0.0.255 area 3
network 50.0.0.0 0.0.0.255 area 4
!
[6.6.6.6]
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
area 4 virtual-link 5.5.5.5
network 6.6.6.6 0.0.0.0 area 0
network 50.0.0.0 0.0.0.255 area 4
!
[7.7.7.7]
!
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 5 virtual-link 8.8.8.8
network 60.0.0.0 0.0.0.255 area 0
network 7.7.7.7 0.0.0.0 area 0
network 70.0.0.0 0.0.0.255 area 5
!
[8.8.8.8]
!
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
area 5 virtual-link 7.7.7.7
area 6 virtual-link 9.9.9.9
network 8.8.8.8 0.0.0.0 area 0
network 70.0.0.0 0.0.0.255 area 5
network 80.0.0.0 0.0.0.255 area 6
!
[9.9.9.9]
!
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
area 6 virtual-link 8.8.8.8
network 9.9.9.9 0.0.0.0 area 0
network 80.0.0.0 0.0.0.255 area 6
!
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결과
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1.1.1.1의 라우팅 테이블이다.
처음에는 area 2와 1, 0밖에 잡히질 않는다.
하지만 시간이 지나면 (대략 30분) 전체 통신이 된다.
-----------(원인 불명)-----------------------------------
추가로 또 확인해본 결과 기다릴 필요없이 바로 통신이 된다. --------------------------------------------------------- +부록)을 보면 굳이 'net [lo] [wildmask] area 0'을 하지 않아도 시간만 지나면 통신이 된다.
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<루프백 : area 1>
더보기
config
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[1.1.1.1]
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 2 virtual-link 2.2.2.2
network 10.0.0.0 0.0.0.255 area 2
network 1.1.1.1 0.0.0.0 area 1
!
[2.2.2.2]
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 2 virtual-link 1.1.1.1
area 1 virtual-link 3.3.3.3
network 10.0.0.0 0.0.0.255 area 2
network 20.0.0.0 0.0.0.255 area 1
network 2.2.2.2 0.0.0.0 area 1
!
[3.3.3.3]
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 1 virtual-link 2.2.2.2
network 30.0.0.0 0.0.0.255 area 0
network 20.0.0.0 0.0.0.255 area 1
network 3.3.3.3 0.0.0.0 area 1
!
[4.4.4.4]
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
area 3 virtual-link 5.5.5.5
network 30.0.0.0 0.0.0.255 area 0
network 60.0.0.0 0.0.0.255 area 0
network 40.0.0.0 0.0.0.255 area 3
network 4.4.4.4 0.0.0.0 area 1
!
[5.5.5.5]
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 3 virtual-link 4.4.4.4
area 4 virtual-link 6.6.6.6
network 40.0.0.0 0.0.0.255 area 3
network 50.0.0.0 0.0.0.255 area 4
network 5.5.5.5 0.0.0.0 area 1
!
[6.6.6.6]
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
area 4 virtual-link 5.5.5.5
network 50.0.0.0 0.0.0.255 area 4
network 6.6.6.6 0.0.0.0 area 1
!
[7.7.7.7]
!
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 5 virtual-link 8.8.8.8
network 60.0.0.0 0.0.0.255 area 0
network 70.0.0.0 0.0.0.255 area 5
network 7.7.7.7 0.0.0.0 area 1
!
[8.8.8.8]
!
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
area 5 virtual-link 7.7.7.7
area 6 virtual-link 9.9.9.9
network 70.0.0.0 0.0.0.255 area 5
network 80.0.0.0 0.0.0.255 area 6
network 8.8.8.8 0.0.0.0 area 1
!
[9.9.9.9]
!
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
area 6 virtual-link 8.8.8.8
network 80.0.0.0 0.0.0.255 area 6
network 9.9.9.9 0.0.0.0 area 1
!
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결과
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마찬가지로 처음에는 통신이 안되다가 30분정도가 지나면 전체 통신이 가능하다.
(내 경우에는 1.1.1.1만 통신이 불가능했다.)
do p 10.0.0.2 !!!!!
do p 10.0.0.1 .....
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<루프백 : 아무거나>
더보기
라우터 가운데 있는 숫자가 lo area 숫자이다.
config
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[1.1.1.1]
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 2 virtual-link 2.2.2.2
network 10.0.0.0 0.0.0.255 area 2
network 1.1.1.1 0.0.0.0 area 14
!
[2.2.2.2]
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 2 virtual-link 1.1.1.1
area 1 virtual-link 3.3.3.3
network 10.0.0.0 0.0.0.255 area 2
network 20.0.0.0 0.0.0.255 area 1
network 2.2.2.2 0.0.0.0 area 25
!
[3.3.3.3]
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 1 virtual-link 2.2.2.2
network 30.0.0.0 0.0.0.255 area 0
network 20.0.0.0 0.0.0.255 area 1
network 3.3.3.3 0.0.0.0 area 1
!
[4.4.4.4]
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
area 3 virtual-link 5.5.5.5
network 30.0.0.0 0.0.0.255 area 0
network 60.0.0.0 0.0.0.255 area 0
network 4.4.4.4 0.0.0.0 area 0
network 40.0.0.0 0.0.0.255 area 3
!
[5.5.5.5]
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 3 virtual-link 4.4.4.4
area 4 virtual-link 6.6.6.6
network 40.0.0.0 0.0.0.255 area 3
network 5.5.5.5 0.0.0.0 area 3
network 50.0.0.0 0.0.0.255 area 4
!
[6.6.6.6]
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
area 4 virtual-link 5.5.5.5
network 50.0.0.0 0.0.0.255 area 4
network 6.6.6.6 0.0.0.0 area 1
!
[7.7.7.7]
!
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 5 virtual-link 8.8.8.8
network 60.0.0.0 0.0.0.255 area 0
network 7.7.7.7 0.0.0.0 area 0
network 70.0.0.0 0.0.0.255 area 5
!
[8.8.8.8]
!
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
area 5 virtual-link 7.7.7.7
area 6 virtual-link 9.9.9.9
network 8.8.8.8 0.0.0.0 area 0
network 70.0.0.0 0.0.0.255 area 5
network 80.0.0.0 0.0.0.255 area 6
!
[9.9.9.9]
!
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
area 6 virtual-link 8.8.8.8
network 80.0.0.0 0.0.0.255 area 6
network 9.9.9.9 0.0.0.0 area 1
!
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결과
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30분정도 기다리니 통신이 되었다.
area 0이 아니라 1도 되서 뭐지?하고 아무거나 입력해봤는데
그래도 통신이 된다.
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<루프백 X>
더보기
[1.1.1.1] Router(config)# do sh ip ro
config
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[1.1.1.1]
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 2 virtual-link 2.2.2.2
network 10.0.0.0 0.0.0.255 area 2
!
[2.2.2.2]
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 2 virtual-link 1.1.1.1
area 1 virtual-link 3.3.3.3
network 10.0.0.0 0.0.0.255 area 2
network 20.0.0.0 0.0.0.255 area 1
!
[3.3.3.3]
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 1 virtual-link 2.2.2.2
network 30.0.0.0 0.0.0.255 area 0
network 20.0.0.0 0.0.0.255 area 1
!
[4.4.4.4]
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
area 3 virtual-link 5.5.5.5
network 30.0.0.0 0.0.0.255 area 0
network 60.0.0.0 0.0.0.255 area 0
network 40.0.0.0 0.0.0.255 area 3
!
[5.5.5.5]
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 3 virtual-link 4.4.4.4
area 4 virtual-link 6.6.6.6
network 40.0.0.0 0.0.0.255 area 3
network 50.0.0.0 0.0.0.255 area 4
!
[6.6.6.6]
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
area 4 virtual-link 5.5.5.5
network 50.0.0.0 0.0.0.255 area 4
!
[7.7.7.7]
!
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 5 virtual-link 8.8.8.8
network 60.0.0.0 0.0.0.255 area 0
network 70.0.0.0 0.0.0.255 area 5
!
[8.8.8.8]
!
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
area 6 virtual-link 9.9.9.9
area 5 virtual-link 7.7.7.7
network 80.0.0.0 0.0.0.255 area 6
network 70.0.0.0 0.0.0.255 area 5
!
[9.9.9.9]
!
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
area 6 virtual-link 8.8.8.8
network 80.0.0.0 0.0.0.255 area 6
!
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결과
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전과 차이점이 있다면 라우팅테이블에 자신의 루프백 주소만 나오다는 점이다.
똑같이 15분 기다리면 통신 잘된다.
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결론
더보기
햇빛이 7.22%?
굳
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Inter-vlan 설정 명령어
Router(config)#ro o 1
Router(config-router)#net [이웃한 IP 대역] [wildmask] ar [areaN]
Router(config-router)#net [lo IP] [wildmask] ar 0
Router(config-router)#ro [lo IP]
Router(config-router)#ar [areaN] vi [areaN이 있는 Router lo IP]
ex) [2.2.2.2]
Router(config)#ro o 1
Router(config-router)#net 10.0.0.0 0.0.0.255 area 2
Router(config-router)#net 20.0.0.0 0.0.0.255 area 1
Router(config-router)#net 2.2.2.2 0.0.0.0 ar 0
Router(config-router)#ro 2.2.2.2
Router(config-router)#ar 2 vi 1.1.1.1
Router(config-router)#ar 1 vi 3.3.3.3
※ area가 0이면 'ar [areaN] vi [areaN이 있는 Router lo IP]' 해줄필요 없음 <루프백 : 아무거나>
※ 원래 'net [lo IP] [wildmask] ar 0' 해주는게 국룰인데 ar 0 바꿔도되고, 안써도 통신은 됨 <루프백 X>
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추가 메모사항
- 뭘 하든 기달려야 통신이 됨 (30분정도)
- 가끔씩 그냥 바로 될때도 있음
- 뇌피셜 : area0이 바로 통신될때가 많고, 'area1' 'area아무거나'도 바로 통신이 될때가 있지만, 대체로 일부분만 통신이된다. areaX(없음)은 바로 통신이 되지않고, 무조건 기달려야한다. +) 아예 안될 수도 있다. |
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cisco에서
날씨를 화창하게 설정해보자
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