Lab 5. OSPF Not So Stubby Area

R2(config-router)#router ospf 2
R2(config-router)#no area 1 stub
R2(config-router)#area 1 nssa

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

1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
O IA 2.2.2.2 [110/11] via 12.12.12.2, 00:02:25, Ethernet0/0
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.23.23.0 [110/20] via 12.12.12.2, 00:02:25, Ethernet0/0
10.0.0.0/32 is subnetted, 4 subnets
C 10.10.10.2 is directly connected, Loopback2
C 10.10.10.3 is directly connected, Loopback3
C 10.10.10.1 is directly connected, Loopback1
C 10.10.10.4 is directly connected, Loopback4
12.0.0.0/24 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, Ethernet0/0

R1#sh ip ospf database

OSPF Router with ID (1.1.1.1) (Process ID 1)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 452 0x80000004 0x0010AC 2
23.23.23.2 23.23.23.2 186 0x80000004 0x000149 1

Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum
12.12.12.1 1.1.1.1 452 0x80000002 0x004183

Summary Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum
2.2.2.2 23.23.23.2 533 0x80000002 0x00FEEC
10.10.10.1 1.1.1.1 708 0x80000002 0x00FF18
10.10.10.2 1.1.1.1 708 0x80000002 0x00F521
23.23.23.0 23.23.23.2 533 0x80000002 0x00762F

Router Link States (Area 10)

Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 708 0x80000003 0x00B61E 2

Summary Net Link States (Area 10)

Link ID ADV Router Age Seq# Checksum
1.1.1.1 1.1.1.1 710 0x80000002 0x0045ED
2.2.2.2 1.1.1.1 456 0x80000002 0x007BA9
12.12.12.0 1.1.1.1 712 0x80000002 0x001CED
23.23.23.0 1.1.1.1 456 0x80000002 0x00F2EB

Summary ASB Link States (Area 10)

Link ID ADV Router Age Seq# Checksum
23.23.23.2 1.1.1.1 186 0x80000001 0x006E78

Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag
10.10.10.3 1.1.1.1 203 0x80000003 0x00BA3F 0
10.10.10.4 1.1.1.1 204 0x80000003 0x00B048 0

R2(config-router)#do 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

1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/11] via 12.12.12.1, 00:03:41, Ethernet0/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
23.0.0.0/24 is subnetted, 1 subnets
C 23.23.23.0 is directly connected, Ethernet0/1
10.0.0.0/32 is subnetted, 4 subnets
O IA 10.10.10.2 [110/11] via 12.12.12.1, 00:03:41, Ethernet0/0
O E1 10.10.10.3 [110/30] via 12.12.12.1, 00:03:41, Ethernet0/0
O IA 10.10.10.1 [110/11] via 12.12.12.1, 00:03:42, Ethernet0/0
O E1 10.10.10.4 [110/30] via 12.12.12.1, 00:03:42, Ethernet0/0
12.0.0.0/24 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, Ethernet0/0

R2(config-router)#do sh ip ospf database

OSPF Router with ID (23.23.23.2) (Process ID 2)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count
1.1.1.1 1.1.1.1 518 0x80000004 0x0010AC 2
23.23.23.2 23.23.23.2 251 0x80000004 0x000149 1

Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum
12.12.12.1 1.1.1.1 518 0x80000002 0x004183

Summary Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum
2.2.2.2 23.23.23.2 598 0x80000002 0x00FEEC
10.10.10.1 1.1.1.1 774 0x80000002 0x00FF18
10.10.10.2 1.1.1.1 774 0x80000002 0x00F521
23.23.23.0 23.23.23.2 598 0x80000002 0x00762F

Router Link States (Area 1)

Link ID ADV Router Age Seq# Checksum Link count
23.23.23.2 23.23.23.2 251 0x8000000A 0x000D1D 2
30.30.30.2 30.30.30.2 941 0x80000006 0x00A917 2

Net Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
23.23.23.3 30.30.30.2 941 0x80000001 0x00C330

Summary Net Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
1.1.1.1 23.23.23.2 254 0x80000003 0x0035A9
10.10.10.1 23.23.23.2 254 0x80000003 0x00EFD3
10.10.10.2 23.23.23.2 255 0x80000003 0x00E5DC
12.12.12.0 23.23.23.2 255 0x80000003 0x00A718

Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag
10.10.10.3 1.1.1.1 265 0x80000003 0x00BA3F 0
10.10.10.4 1.1.1.1 267 0x80000003 0x00B048 0

R3(config-router)#do sh ip ospf database

OSPF Router with ID (30.30.30.2) (Process ID 3)

Router Link States (Area 1)

Link ID ADV Router Age Seq# Checksum Link count
23.23.23.2 23.23.23.2 445 0x80000008 0x00EDFE 2
30.30.30.2 30.30.30.2 319 0x80000007 0x002FDA 2

Summary Net Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
0.0.0.0 23.23.23.2 1128 0x80000001 0x007B7B
1.1.1.1 23.23.23.2 428 0x80000001 0x00B137
10.10.10.1 23.23.23.2 428 0x80000001 0x006C61
10.10.10.2 23.23.23.2 428 0x80000001 0x00626A
12.12.12.0 23.23.23.2 428 0x80000001 0x0024A5

R3(config-router)#do ping 10.10.10.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

Share this :