OSPF的NSSA区域
日期：2008年10月30日 评论次数：No Comments » 浏览次数：
实验目的：不完全末梢区域能过滤3类，4类LSA。会将5类LSA以7类LSA的形式通告出去。
基本配置：将2.2.2.2，3.3.3.3，4.4.4.4,5.5.5.5全部redistribute进路由表内
拓扑图
正常配置后的路由表如下表：
r1#
r1#
r1#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
C 192.168.12.0/24 is directly connected, Ethernet0/0
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
C 192.168.13.0/24 is directly connected, Ethernet0/2
2.0.0.0/32 is subnetted, 1 subnets
O E2 2.2.2.2 [110/20] via 192.168.12.2, 00:00:27, Ethernet0/0
3.0.0.0/32 is subnetted, 1 subnets
O E2 3.3.3.3 [110/20] via 192.168.13.3, 00:00:27, Ethernet0/2
4.0.0.0/32 is subnetted, 1 subnets
O E2 4.4.4.4 [110/20] via 192.168.12.2, 00:00:27, Ethernet0/0
O E2 192.168.24.0/24 [110/20] via 192.168.12.2, 00:00:27, Ethernet0/0
5.0.0.0/32 is subnetted, 1 subnets
O E2 5.5.5.5 [110/20] via 192.168.13.3, 00:00:27, Ethernet0/2
O IA 192.168.35.0/24 [110/20] via 192.168.13.3, 00:00:28, Ethernet0/2
r1#
r2#
r2#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
C 192.168.12.0/24 is directly connected, Ethernet0/0
1.0.0.0/32 is subnetted, 1 subnets
O E2 1.1.1.1 [110/20] via 192.168.12.1, 00:00:55, Ethernet0/0
O IA 192.168.13.0/24 [110/20] via 192.168.12.1, 00:00:55, Ethernet0/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
3.0.0.0/32 is subnetted, 1 subnets
O E2 3.3.3.3 [110/20] via 192.168.12.1, 00:00:55, Ethernet0/0
4.0.0.0/32 is subnetted, 1 subnets
R 4.4.4.4 [120/1] via 192.168.24.4, 00:00:05, Ethernet0/1
C 192.168.24.0/24 is directly connected, Ethernet0/1
5.0.0.0/32 is subnetted, 1 subnets
O E2 5.5.5.5 [110/20] via 192.168.12.1, 00:00:55, Ethernet0/0
O IA 192.168.35.0/24 [110/30] via 192.168.12.1, 00:00:56, Ethernet0/0
r2#
r3#
r3#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
O IA 192.168.12.0/24 [110/20] via 192.168.13.1, 00:00:34, Ethernet0/2
1.0.0.0/32 is subnetted, 1 subnets
O E2 1.1.1.1 [110/20] via 192.168.13.1, 00:00:29, Ethernet0/2
C 192.168.13.0/24 is directly connected, Ethernet0/2
2.0.0.0/32 is subnetted, 1 subnets
O E2 2.2.2.2 [110/20] via 192.168.13.1, 00:00:29, Ethernet0/2
3.0.0.0/32 is subnetted, 1 subnets
C 3.3.3.3 is directly connected, Loopback0
4.0.0.0/32 is subnetted, 1 subnets
O E2 4.4.4.4 [110/20] via 192.168.13.1, 00:00:29, Ethernet0/2
O E2 192.168.24.0/24 [110/20] via 192.168.13.1, 00:00:29, Ethernet0/2
5.0.0.0/32 is subnetted, 1 subnets
O E2 5.5.5.5 [110/20] via 192.168.35.5, 00:00:29, Ethernet0/3
C 192.168.35.0/24 is directly connected, Ethernet0/3
r3#
r4#
r4#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
R 192.168.12.0/24 [120/8] via 192.168.24.2, 00:00:20, Ethernet0/1
1.0.0.0/32 is subnetted, 1 subnets
R 1.1.1.1 [120/8] via 192.168.24.2, 00:00:18, Ethernet0/1
R 192.168.13.0/24 [120/8] via 192.168.24.2, 00:00:18, Ethernet0/1
3.0.0.0/32 is subnetted, 1 subnets
R 3.3.3.3 [120/8] via 192.168.24.2, 00:00:18, Ethernet0/1
4.0.0.0/32 is subnetted, 1 subnets
C 4.4.4.4 is directly connected, Loopback0
C 192.168.24.0/24 is directly connected, Ethernet0/1
5.0.0.0/32 is subnetted, 1 subnets
R 5.5.5.5 [120/8] via 192.168.24.2, 00:00:18, Ethernet0/1
R 192.168.35.0/24 [120/8] via 192.168.24.2, 00:00:18, Ethernet0/1
r4#
将Area 1配置成NSSA区域：
r1#
r1(config)#router ospf 100
r1(config-router)#area 1 nssa no-summary
r1#
r2#
r2(config)#router ospf 100
r2(config-router)#area 1 nssa
r2#
此时查看各个路由器的路由表：
r1#
r1#
r1#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
C 192.168.12.0/24 is directly connected, Ethernet0/0
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
C 192.168.13.0/24 is directly connected, Ethernet0/2
2.0.0.0/32 is subnetted, 1 subnets
O N2 2.2.2.2 [110/20] via 192.168.12.2, 00:00:20, Ethernet0/0
3.0.0.0/32 is subnetted, 1 subnets
O E2 3.3.3.3 [110/20] via 192.168.13.3, 00:00:20, Ethernet0/2
4.0.0.0/32 is subnetted, 1 subnets
O N2 4.4.4.4 [110/20] via 192.168.12.2, 00:00:20, Ethernet0/0
O N2 192.168.24.0/24 [110/20] via 192.168.12.2, 00:00:20, Ethernet0/0
5.0.0.0/32 is subnetted, 1 subnets
O E2 5.5.5.5 [110/20] via 192.168.13.3, 00:00:20, Ethernet0/2
O IA 192.168.35.0/24 [110/20] via 192.168.13.3, 00:00:21, Ethernet0/2
r1#
r2#
r2#
r2#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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 192.168.12.1 to network 0.0.0.0
C 192.168.12.0/24 is directly connected, Ethernet0/0
1.0.0.0/32 is subnetted, 1 subnets
O N2 1.1.1.1 [110/20] via 192.168.12.1, 00:00:01, Ethernet0/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
4.0.0.0/32 is subnetted, 1 subnets
R 4.4.4.4 [120/1] via 192.168.24.4, 00:00:03, Ethernet0/1
C 192.168.24.0/24 is directly connected, Ethernet0/1
O*IA 0.0.0.0/0 [110/11] via 192.168.12.1, 00:00:06, Ethernet0/0
r2#
r3#
r3#
r3#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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
O IA 192.168.12.0/24 [110/20] via 192.168.13.1, 00:02:38, Ethernet0/2
1.0.0.0/32 is subnetted, 1 subnets
O E2 1.1.1.1 [110/20] via 192.168.13.1, 00:02:33, Ethernet0/2
C 192.168.13.0/24 is directly connected, Ethernet0/2
2.0.0.0/32 is subnetted, 1 subnets
O E2 2.2.2.2 [110/20] via 192.168.13.1, 00:02:27, Ethernet0/2
3.0.0.0/32 is subnetted, 1 subnets
C 3.3.3.3 is directly connected, Loopback0
4.0.0.0/32 is subnetted, 1 subnets
O E2 4.4.4.4 [110/20] via 192.168.13.1, 00:02:27, Ethernet0/2
O E2 192.168.24.0/24 [110/20] via 192.168.13.1, 00:02:27, Ethernet0/2
5.0.0.0/32 is subnetted, 1 subnets
O E2 5.5.5.5 [110/20] via 192.168.35.5, 00:02:33, Ethernet0/3
C 192.168.35.0/24 is directly connected, Ethernet0/3
r3#
r4#
r4#
r4#show ip route
Codes: 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
i – IS-IS, su – IS-IS summary, 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 192.168.24.2 to network 0.0.0.0
R 192.168.12.0/24 [120/8] via 192.168.24.2, 00:00:15, Ethernet0/1
1.0.0.0/32 is subnetted, 1 subnets
R 1.1.1.1 [120/8] via 192.168.24.2, 00:00:15, Ethernet0/1
4.0.0.0/32 is subnetted, 1 subnets
C 4.4.4.4 is directly connected, Loopback0
C 192.168.24.0/24 is directly connected, Ethernet0/1
R* 0.0.0.0/0 [120/8] via 192.168.24.2, 00:00:10, Ethernet0/1
r4#
r4#
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