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ANTON
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2009-06-30 00:43:40, 조회 : 226, 추천 : 42 |
OSPF 정리 OSPF
2007/12/27 02:53
http://blog.naver.com/anton3831/120046110016
이 포스트를 보낸곳 ()
공식
R1 R2 (AREA0와인접한놈)
STUB STUB
STUB TSTUB
NSSA NSSA
NSSA TNSSA
설정전
R1#sh ip route ospf
3.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
O IA 3.3.4.4/32 [110/129] via 3.3.12.2, 00:00:18, Serial0
O IA 3.3.3.3/32 [110/129] via 3.3.12.2, 00:00:18, Serial0
O IA 3.3.2.2/32 [110/65] via 3.3.12.2, 00:00:18, Serial0
O IA 3.3.7.0/24 [110/130] via 3.3.12.2, 00:00:18, Serial0
O IA 3.3.47.0/24 [110/129] via 3.3.12.2, 00:00:18, Serial0
O IA 3.3.100.0/24 [110/128] via 3.3.12.2, 00:00:18, Serial0
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:00:18, Serial0
O E2 192.3.1.0/24 [110/20] via 3.3.12.2, 00:00:18, Serial0
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:00:07, Serial0.1
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:00:27, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:00:27, Serial0.2
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:00:07, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:00:07, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:00:07, Serial0.2
양쪽에 area 12 stub 설정후
R1#sh ip route ospf
3.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
O IA 3.3.4.4/32 [110/129] via 3.3.12.2, 00:00:42, Serial0
O IA 3.3.3.3/32 [110/129] via 3.3.12.2, 00:00:42, Serial0
O IA 3.3.2.2/32 [110/65] via 3.3.12.2, 00:00:42, Serial0
O IA 3.3.7.0/24 [110/130] via 3.3.12.2, 00:00:42, Serial0
O IA 3.3.47.0/24 [110/129] via 3.3.12.2, 00:00:42, Serial0
O IA 3.3.100.0/24 [110/128] via 3.3.12.2, 00:00:42, Serial0
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:00:42, Serial0
O*IA 0.0.0.0/0 [110/65] via 3.3.12.2, 00:00:42, Serial0 <---192번이 함축되어 경로를 하나만 보도록했다.
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:01:09, Serial0.1
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:01:19, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:01:19, Serial0.2
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:01:09, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:01:09, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:01:09, Serial0.2
R2측에 area 12 stub no-summary 만 걸었을경우 이런경우 Totlay stub는 한쪽단만 걸면 되니까
R1측은 area 12 stub/R2측은 area 12 stub no-summary
R1#sh ip route ospf
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:00:22, Serial0
O*IA 0.0.0.0/0 [110/65] via 3.3.12.2, 00:00:22, Serial0 <--R2측에 적용후 상기 OIA 정보가 Default로 바뀜
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:00:43, Serial0.1
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:02:22, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:02:22, Serial0.2
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:00:43, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:00:43, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:00:43, Serial0.2
반드시 설정변경전 clear ip ospf process 해서 삭제요망
R1과 R2측에 NSSA 설정
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:00:58, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:00:58, Serial0.2
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:01:08, Serial0.1
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:00:58, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:00:58, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:00:58, Serial0.2 <---R2측에서는 192를 가져오지만 R1측에는 넘겨주지않음
R1#sh ip route ospf
3.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
O IA 3.3.4.4/32 [110/129] via 3.3.12.2, 00:00:48, Serial0
O IA 3.3.3.3/32 [110/129] via 3.3.12.2, 00:00:48, Serial0
O IA 3.3.2.2/32 [110/65] via 3.3.12.2, 00:01:04, Serial0
O IA 3.3.7.0/24 [110/130] via 3.3.12.2, 00:00:48, Serial0
O IA 3.3.47.0/24 [110/129] via 3.3.12.2, 00:00:48, Serial0
O IA 3.3.100.0/24 [110/128] via 3.3.12.2, 00:00:42, Serial0
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:01:04, Serial0
넘겨받지 못했음
넘겨받는 방법 R2측에서 area 12 nssa default-information-originate <--만들어서 R1에 주겠다라는 뜻
R1#sh ip route ospf
3.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O IA 3.3.2.2/32 [110/65] via 3.3.12.2, 00:00:02, Serial0
O IA 3.3.100.0/24 [110/128] via 3.3.12.2, 00:00:02, Serial0
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:00:02, Serial0
O*N2 0.0.0.0/0 [110/1] via 3.3.12.2, 00:00:02, Serial0 <--N2로써 192.3.1의 경로정보를 Default로 받아왔다.
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:00:04, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:00:04, Serial0.2
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:00:14, Serial0.1
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:00:04, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:00:04, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:00:04, Serial0.2
이어서
R1에 NSSA R2에 TNSSA 설정하게 되면
간단하게 R2에서 TNSSA 설정 area 12 nssa no-summary
R1#sh ip route ospf
12.0.0.0/32 is subnetted, 1 subnets
O 12.12.12.12 [110/65] via 3.3.12.2, 00:00:09, Serial0
O*IA 0.0.0.0/0 [110/65] via 3.3.12.2, 00:00:09, Serial0
R2#sh ip route ospf
3.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
O 3.3.1.1/32 [110/65] via 3.3.12.1, 00:00:30, Serial0.1
O 3.3.4.4/32 [110/65] via 3.3.100.4, 00:01:32, Serial0.2
O 3.3.3.3/32 [110/65] via 3.3.100.3, 00:01:32, Serial0.2
O IA 3.3.7.0/24 [110/66] via 3.3.100.4, 00:00:30, Serial0.2
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:00:30, Serial0.2
O E2 192.3.1.0/24 [110/20] via 3.3.100.3, 00:00:30, Serial0.2
중요한것은 R2와 R1의 관계를 자세히 봐라 R2에서 설정을 해주게 되면 R1의 값이 어떻게 변하는지를 |
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