This is third post about OSPF and today I will present totally stub and what each router can see:
In this scenario routers R6, R7 and R8 don't have information how to reach R10.
R8 and R9 routers (in area 1) can't see area 0 prefixes, only default gateway:
R6#sh ip route
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 10.0.0.0/24 is directly connected, FastEthernet0/0
L 10.0.0.6/32 is directly connected, FastEthernet0/0
O IA 10.1.0.0/24 [110/2] via 10.0.0.7, 00:14:18, FastEthernet0/0
O IA 10.2.0.0/24 [110/3] via 10.0.0.7, 00:00:07, FastEthernet0/0
C 10.10.10.0/24 is directly connected, Loopback0
L 10.10.10.6/32 is directly connected, Loopback0
R6#sh ip ospf database database-summary
OSPF Router with ID (10.10.10.6) (Process ID 10)
Area 0 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 5 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 3
Total 5 0 0
R6#
R7#sh ip route
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 10.0.0.0/24 is directly connected, FastEthernet0/0
L 10.0.0.7/32 is directly connected, FastEthernet0/0
C 10.1.0.0/24 is directly connected, FastEthernet1/0
L 10.1.0.7/32 is directly connected, FastEthernet1/0
O 10.2.0.0/24 [110/2] via 10.1.0.8, 00:01:16, FastEthernet1/0
O 10.10.10.6/32 [110/2] via 10.0.0.6, 00:01:26, FastEthernet0/0
R7#sh ip ospf database database-summary
OSPF Router with ID (10.1.0.7) (Process ID 10)
Area 0 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 5 0 0
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 5 0 0
Network 3 0 0
Summary Net 3 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 6
Total 11 0 0
R7#
R8#sh ip route
Gateway of last resort is 10.1.0.7 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.1.0.7, 00:03:04, FastEthernet1/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.1.0.0/24 is directly connected, FastEthernet1/0
L 10.1.0.8/32 is directly connected, FastEthernet1/0
C 10.2.0.0/24 is directly connected, FastEthernet0/0
L 10.2.0.8/32 is directly connected, FastEthernet0/0
R8#sh ip ospf database database-summary
OSPF Router with ID (10.2.0.8) (Process ID 10)
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 4
Total 6 0 0
R8#
R9#sh ip route
Gateway of last resort is 10.2.0.8 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/3] via 10.2.0.8, 00:00:29, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 10.1.0.0/24 [110/2] via 10.2.0.8, 00:00:29, FastEthernet0/0
C 10.2.0.0/24 is directly connected, FastEthernet0/0
L 10.2.0.9/32 is directly connected, FastEthernet0/0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 172.16.3.0/24 is directly connected, FastEthernet1/1
L 172.16.3.9/32 is directly connected, FastEthernet1/1
R 172.16.4.0/24 [120/1] via 172.16.3.10, 00:00:01, FastEthernet1/1
R9#
R9#sh ip ospf database database-summary
OSPF Router with ID (172.16.3.9) (Process ID 10)
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 4
Total 6 0 0
R9#
R10#sh 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
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, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
S 10.0.0.0/8 [1/0] via 172.16.3.9
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
C 172.16.3.0/24 is directly connected, FastEthernet1/1
L 172.16.3.10/32 is directly connected, FastEthernet1/1
C 172.16.4.0/24 is directly connected, Loopback0
L 172.16.4.10/32 is directly connected, Loopback0
R10#
All information on one page:
In this scenario routers R6, R7 and R8 don't have information how to reach R10.
R8 and R9 routers (in area 1) can't see area 0 prefixes, only default gateway:
R6#sh ip route
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 10.0.0.0/24 is directly connected, FastEthernet0/0
L 10.0.0.6/32 is directly connected, FastEthernet0/0
O IA 10.1.0.0/24 [110/2] via 10.0.0.7, 00:14:18, FastEthernet0/0
O IA 10.2.0.0/24 [110/3] via 10.0.0.7, 00:00:07, FastEthernet0/0
C 10.10.10.0/24 is directly connected, Loopback0
L 10.10.10.6/32 is directly connected, Loopback0
R6#sh ip ospf database database-summary
OSPF Router with ID (10.10.10.6) (Process ID 10)
Area 0 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 5 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 3
Total 5 0 0
R6#
R7#sh ip route
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 10.0.0.0/24 is directly connected, FastEthernet0/0
L 10.0.0.7/32 is directly connected, FastEthernet0/0
C 10.1.0.0/24 is directly connected, FastEthernet1/0
L 10.1.0.7/32 is directly connected, FastEthernet1/0
O 10.2.0.0/24 [110/2] via 10.1.0.8, 00:01:16, FastEthernet1/0
O 10.10.10.6/32 [110/2] via 10.0.0.6, 00:01:26, FastEthernet0/0
R7#sh ip ospf database database-summary
OSPF Router with ID (10.1.0.7) (Process ID 10)
Area 0 database summary
LSA Type Count Delete Maxage
Router 2 0 0
Network 1 0 0
Summary Net 2 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 5 0 0
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 5 0 0
Network 3 0 0
Summary Net 3 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 6
Total 11 0 0
R7#
R8#sh ip route
Gateway of last resort is 10.1.0.7 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.1.0.7, 00:03:04, FastEthernet1/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.1.0.0/24 is directly connected, FastEthernet1/0
L 10.1.0.8/32 is directly connected, FastEthernet1/0
C 10.2.0.0/24 is directly connected, FastEthernet0/0
L 10.2.0.8/32 is directly connected, FastEthernet0/0
R8#sh ip ospf database database-summary
OSPF Router with ID (10.2.0.8) (Process ID 10)
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 4
Total 6 0 0
R8#
R9#sh ip route
Gateway of last resort is 10.2.0.8 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/3] via 10.2.0.8, 00:00:29, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 10.1.0.0/24 [110/2] via 10.2.0.8, 00:00:29, FastEthernet0/0
C 10.2.0.0/24 is directly connected, FastEthernet0/0
L 10.2.0.9/32 is directly connected, FastEthernet0/0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 172.16.3.0/24 is directly connected, FastEthernet1/1
L 172.16.3.9/32 is directly connected, FastEthernet1/1
R 172.16.4.0/24 [120/1] via 172.16.3.10, 00:00:01, FastEthernet1/1
R9#
R9#sh ip ospf database database-summary
OSPF Router with ID (172.16.3.9) (Process ID 10)
Area 1 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Prefixes redistributed in Type-7 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Subtotal 6 0 0
Process 10 database summary
LSA Type Count Delete Maxage
Router 3 0 0
Network 2 0 0
Summary Net 1 0 0
Summary ASBR 0 0 0
Type-7 Ext 0 0 0
Opaque Link 0 0 0
Opaque Area 0 0 0
Type-5 Ext 0 0 0
Prefixes redistributed in Type-5 0
Opaque AS 0 0 0
Non-self 4
Total 6 0 0
R9#
R10#sh 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
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, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
S 10.0.0.0/8 [1/0] via 172.16.3.9
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
C 172.16.3.0/24 is directly connected, FastEthernet1/1
L 172.16.3.10/32 is directly connected, FastEthernet1/1
C 172.16.4.0/24 is directly connected, Loopback0
L 172.16.4.10/32 is directly connected, Loopback0
R10#
All information on one page:
Comments
Post a Comment