OSPF区域间不通

songefun

R2#show ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           0   FULL/  -        00:00:32    23.1.1.3        Serial0/0/0
1.1.1.1           1   FULL/DR         00:00:35    12.1.1.1        GigabitEthernet0/0
4.4.4.4           1   FULL/BDR        00:00:31    24.1.1.4        GigabitEthernet0/1

区域内路由可以ping通
但是区域间ping不通
请大神解惑

astray0

R4
router os 1
no network 24.1.1.0 0.0.0.0 area  0

然后 保存下 重启
write
reload

songefun

R2#show ip route
Codes: L - local, 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, 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

     1.0.0.0/32 is subnetted, 1 subnets
O       1.1.1.1/32 [110/2] via 12.1.1.1, 01:19:12, GigabitEthernet0/0
     2.0.0.0/32 is subnetted, 1 subnets
C       2.2.2.2/32 is directly connected, Loopback0
     3.0.0.0/32 is subnetted, 1 subnets
O       3.3.3.3/32 [110/65] via 23.1.1.3, 01:16:30, Serial0/0/0
     4.0.0.0/32 is subnetted, 1 subnets
O       4.4.4.4/32 [110/2] via 24.1.1.4, 01:05:02, GigabitEthernet0/1
     12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       12.1.1.0/24 is directly connected, GigabitEthernet0/0
L       12.1.1.2/32 is directly connected, GigabitEthernet0/0
     23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       23.1.1.0/24 is directly connected, Serial0/0/0
L       23.1.1.2/32 is directly connected, Serial0/0/0
     24.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       24.1.1.0/24 is directly connected, GigabitEthernet0/1
L       24.1.1.2/32 is directly connected, GigabitEthernet0/1

songefun

R3#show ip route
Codes: L - local, 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, 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

     1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1/32 [110/66] via 23.1.1.2, 01:18:01, Serial0/0/0
     2.0.0.0/32 is subnetted, 1 subnets
O       2.2.2.2/32 [110/65] via 23.1.1.2, 01:18:01, Serial0/0/0
     3.0.0.0/32 is subnetted, 1 subnets
C       3.3.3.3/32 is directly connected, Loopback0
     4.0.0.0/32 is subnetted, 1 subnets
O IA    4.4.4.4/32 [110/66] via 23.1.1.2, 01:06:28, Serial0/0/0
     12.0.0.0/24 is subnetted, 1 subnets
O IA    12.1.1.0/24 [110/65] via 23.1.1.2, 01:18:01, Serial0/0/0
     23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       23.1.1.0/24 is directly connected, Serial0/0/0
L       23.1.1.3/32 is directly connected, Serial0/0/0
     24.0.0.0/24 is subnetted, 1 subnets
O IA    24.1.1.0/24 [110/65] via 23.1.1.2, 01:18:01, Serial0/0/0

songefun

R4#show ip route
Codes: L - local, 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, 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

     1.0.0.0/32 is subnetted, 1 subnets
O       1.1.1.1/32 [110/3] via 24.1.1.2, 01:07:53, GigabitEthernet0/1
     4.0.0.0/32 is subnetted, 1 subnets
C       4.4.4.4/32 is directly connected, Loopback0
     12.0.0.0/24 is subnetted, 1 subnets
O       12.1.1.0/24 [110/2] via 24.1.1.2, 01:07:53, GigabitEthernet0/1
     24.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       24.1.1.0/24 is directly connected, GigabitEthernet0/1
L       24.1.1.4/32 is directly connected, GigabitEthernet0/1

vicky要过CCNA

R4的 router ospf 1 下面的 network statement 有一条是错误的，去掉 network24.1.1.0 0.0.0.0 area 0

songefun

vicky要过CCNA 发表于 2017-8-15 07:14
R4的 router ospf 1 下面的 network statement 有一条是错误的，去掉 network24.1.1.0 0.0.0.0 area 0

去掉了还是不行，
主要是R3有学习到去R4的路由，但是R4没有学习到去R3的路由
R4 show ip route 的时候没有O IA的信息
但是不知道问题出在哪里

songefun

astray0 发表于 2017-8-15 11:35
R4
router os 1
no network 24.1.1.0 0.0.0.0 area  0

重启OK....感谢