OSPF的验证方法 
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 拓扑说明
R1: s0 10.1.1.1/24 l0 4.4.4.4/32
R2: s0 10.1.1.2/24 s1 10.1.2.5/24 l0 5.5.5.5/32 R3: s1 10.1.2.6/24 l0 6.6.6.6/32 R1, R2的S0和l0参与area 0 R2, R3的S1参与area 2 R3的l0 参与area 3 1，基于区域的验证
R1
conf t int l 0 ip ad 4.4.4.4 255.255.255.255 int s 0 ip ad 10.1.1.1 255.255.255.0 clock rate 64000 no shut ip ospf message 1 md5 pass router ospf 1 router-id 4.4.4.4 net 4.4.4.4 0.0.0.0 a 0 net 10.1.1.1 0.0.0.0 a 0 area 0 authentication message-digest end R2 conf t int l 0 ip ad 5.5.5.5 255.255.255.255 int s 0 ip ad 10.1.1.2 255.255.255.0 no shut int s 1 ip ad 10.1.2.5 255.255.255.0 no shut ip ospf message 1 md5 ccie router ospf 1
router-id 5.5.5.5 net 5.5.5.5 0.0.0.0 a 0 net 10.1.1.2 0.0.0.0 a 0 net 10.1.2.5 0.0.0.0 a 2 area 2 virtual-link 6.6.6.6 area 0 authentication message-digest area 2 virtual-link 6.6.6.6 authentication-key pass end R3
conf t
int l 0 ip ad 6.6.6.6 255.255.255.255 int l 1 ip ad 6.6.7.6 255.255.255.255 int s 1 clock rate 64000 ip ad 10.1.2.6 255.255.255.0 no shut router ospf 1 router-id 6.6.6.6 net 6.6.6.6 0.0.0.0 a 2 net 10.1.2.6 0.0.0.0 a 2 net 6.6.7.6 0.0.0.0 a 3 area 2 virtual-link 5.5.5.5 area 0 authentication message-digest area 2 virtual-link 5.5.5.5 authentication-key pass end r1#sh 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, 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
4.0.0.0/32 is subnetted, 1 subnets
C 4.4.4.4 is directly connected, Loopback0 5.0.0.0/32 is subnetted, 1 subnets O 5.5.5.5 [110/65] via 10.1.1.2, 00:00:54, Serial0 6.0.0.0/32 is subnetted, 2 subnets O IA 6.6.6.6 [110/75] via 10.1.1.2, 00:00:54, Serial0 O IA 6.6.7.6 [110/75] via 10.1.1.2, 00:00:54, Serial0 10.0.0.0/24 is subnetted, 2 subnets O IA 10.1.2.0 [110/74] via 10.1.1.2, 00:00:54, Serial0 C 10.1.1.0 is directly connected, Serial0 r2#sh ip route Codes: C - connected, S - static, I - IGRP, 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
4.0.0.0/32 is subnetted, 1 subnets
O 4.4.4.4 [110/65] via 10.1.1.1, 00:01:13, Serial0 5.0.0.0/32 is subnetted, 1 subnets C 5.5.5.5 is directly connected, Loopback0 6.0.0.0/32 is subnetted, 2 subnets O 6.6.6.6 [110/11] via 10.1.2.6, 00:26:07, Ethernet0 O IA 6.6.7.6 [110/11] via 10.1.2.6, 00:01:13, Ethernet0 10.0.0.0/24 is subnetted, 2 subnets C 10.1.2.0 is directly connected, Ethernet0 C 10.1.1.0 is directly connected, Serial0 R3# R3#sh 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, 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
4.0.0.0/32 is subnetted, 1 subnets
O 4.4.4.4 [110/75] via 10.1.2.5, 00:00:24, Ethernet0/0 5.0.0.0/32 is subnetted, 1 subnets O 5.5.5.5 [110/11] via 10.1.2.5, 00:00:24, Ethernet0/0 6.0.0.0/32 is subnetted, 2 subnets C 6.6.6.6 is directly connected, Loopback0 C 6.6.7.6 is directly connected, Loopback1 10.0.0.0/24 is subnetted, 2 subnets C 10.1.2.0 is directly connected, Ethernet0/0 O 10.1.1.0 [110/74] via 10.1.2.5, 00:00:24, Ethernet0/0 二，基于接口的验证
初始配置就不再写了，这里只写有关接口验证的配置
R1
conf t
int s 0
ip ospf authentication message-digest
ip ospf message-digest 1 md5 pass
end
R2
int s 0
ip ospf authentication message-digest
ip ospf message-digest 1 md5 pass
router ospf 1
area 0 authentication message-digest
area 2 virtual-link 6.6.6.6 authentication message-digest
area 2 virtual-link 6.6.6.6 message-digest 1 md5 pass
end
R3
conf t
router ospf 1
area 0 authentication message-digest
area 2 virtual-link 5.5.5.5 authentication message-digest
area 2 virtual-link 5.5.5.5 message-digest 1 md5 pass
end
校验
R1#sh 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
4.0.0.0/32 is subnetted, 1 subnets
C 4.4.4.4 is directly connected, Loopback0 5.0.0.0/32 is subnetted, 1 subnets O 5.5.5.5 [110/65] via 10.1.1.2, 00:00:11, Serial2/0 6.0.0.0/32 is subnetted, 2 subnets O IA 6.6.6.6 [110/129] via 10.1.1.2, 00:00:11, Serial2/0 O IA 6.6.7.6 [110/129] via 10.1.1.2, 00:00:11, Serial2/0 10.0.0.0/24 is subnetted, 2 subnets O IA 10.1.2.0 [110/128] via 10.1.1.2, 00:00:11, Serial2/0 C 10.1.1.0 is directly connected, Serial2/0 R2#sh 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
4.0.0.0/32 is subnetted, 1 subnets
O 4.4.4.4 [110/65] via 10.1.1.1, 00:00:06, Serial2/0 5.0.0.0/32 is subnetted, 1 subnets C 5.5.5.5 is directly connected, Loopback0 6.0.0.0/32 is subnetted, 2 subnets O 6.6.6.6 [110/65] via 10.1.2.6, 00:29:27, Serial2/1 O IA 6.6.7.6 [110/65] via 10.1.2.6, 00:00:06, Serial2/1 10.0.0.0/24 is subnetted, 2 subnets C 10.1.2.0 is directly connected, Serial2/1 C 10.1.1.0 is directly connected, Serial2/0 R3#sh 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
4.0.0.0/32 is subnetted, 1 subnets
O 4.4.4.4 [110/129] via 10.1.2.5, 00:00:10, Serial2/1 5.0.0.0/32 is subnetted, 1 subnets O 5.5.5.5 [110/65] via 10.1.2.5, 00:00:10, Serial2/1 6.0.0.0/32 is subnetted, 2 subnets C 6.6.6.6 is directly connected, Loopback0 C 6.6.7.6 is directly connected, Loopback1 10.0.0.0/24 is subnetted, 2 subnets C 10.1.2.0 is directly connected, Serial2/1 O 10.1.1.0 [110/128] via 10.1.2.5, 00:00:10, Serial 以上是OSPF的验证方法，OSPF的验证有两种，一种是明文验证，一种是MD5验证，在此只写出MD5验证的配置方法。 本文出自 “穿过地狱去看海” 博客，谢绝转载！ 本文出自 51CTO.COM技术博客 |
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