Thanks, Russ.
If you have time please take a look on OSPF config below. Any ideas why is it so?? I marked my questions with *************(somewhere toward the middle of the config file)
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Upper#sh run
Building configuration...
Current configuration : 911 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname Upper
!
logging queue-limit 100
enable password cisco
!
ip subnet-zero
!
interface Ethernet0
ip address 10.10.2.2 255.255.255.0
no ip route-cache
no ip mroute-cache
!
interface Serial0
bandwidth 64000
ip address 10.10.10.2 255.255.255.0
no ip route-cache
no ip mroute-cache
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
router ospf 1
log-adjacency-changes
network 10.10.1.0 0.0.0.255 area 0
network 10.10.10.0 0.0.0.255 area 0
!
router rip
network 10.0.0.0
!
ip classless
no ip http server
!
line con 0
line aux 0
transport input all
line vty 0 4
password cisco
login
!
end
Upper#sh ip ospf int
Serial0 is up, line protocol is up
Internet Address 10.10.10.2/24, Area 0
Process ID 1, Router ID 10.10.10.2, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:02
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 10.10.10.1
Suppress hello for 0 neighbor(s)
!
Upper#sh ip ospf database
OSPF Router with ID (10.10.10.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
10.10.10.1 10.10.10.1 133 0x80000002 0x00A7AF 3
10.10.10.2 10.10.10.2 135 0x80000007 0x00BEC0 2
!
Upper#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
10.10.10.1 1 FULL/ - 00:00:35 10.10.10.1 Serial0
Upper#sh ip route ospf
10.0.0.0/24 is subnetted, 2 subnets
O 10.10.1.0 [110/11] via 10.10.10.1, 00:02:40, Serial0
!
Upper#sh ip ospf
Routing Process "ospf 1" with ID 10.10.10.2
Supports only single TOS(TOS0) routes
Supports opaque LSA
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
Number of external LSA 0. Checksum Sum 0x000000
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
External flood list length 0
Area BACKBONE(0)
Number of interfaces in this area is 1
Area has no authentication
SPF algorithm executed 7 times
Area ranges are
Number of LSA 2. Checksum Sum 0x01666F
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0
Upper#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
10.0.0.0/24 is subnetted, 2 subnets
O 10.10.1.0 [110/11] via 10.10.10.1, 00:03:08, Serial0
C 10.10.10.0 is directly connected, Serial0
!
Upper#10.10.10.1
Trying 10.10.10.1 ... Open
In vino veritas
User Access Verification
Password:
Lower>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
---------------------------------
10.0.0.0/24 is subnetted, 2 subnets
C 10.10.1.0 is directly connected, Ethernet0
C 10.10.10.0 is directly connected, Serial0
************ why I don’t see OSPF route here????
----------------------------
Lower>sh ip ospf database
OSPF Router with ID (10.10.10.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
10.10.10.1 10.10.10.1 318 0x80000002 0x00A7AF 3
10.10.10.2 10.10.10.2 321 0x80000007 0x00BEC0 2
Lower>enable
Password:
Lower#sh run
Building configuration...
Current configuration : 1006 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname Lower
!
logging queue-limit 100
enable password cisco
!
ip subnet-zero
!
interface Ethernet0
ip address 10.10.1.1 255.255.255.0
no ip route-cache
no ip mroute-cache
no keepalive
!
interface Serial0
bandwidth 64000
ip address 10.10.10.1 255.255.255.0
no ip route-cache
no ip mroute-cache
no fair-queue
clockrate 64000
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
shutdown
!
interface BRI0
no ip address
encapsulation hdlc
no ip route-cache
no ip mroute-cache
shutdown
!
router eigrp 1
network 10.0.0.0
auto-summary
!
router ospf 1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
router rip
network 10.0.0.0
!
ip classless
no ip http server
!
!
banner motd ^C In vino veritas ^C
!
line con 0
line aux 0
transport input all
line vty 0 4
password cisco
login
!
end
Lower#sh ip ospf int
Serial0 is up, line protocol is up
Internet Address 10.10.10.1/24, Area 0
Process ID 1, Router ID 10.10.10.1, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:01
Index 2/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 10.10.10.2
Suppress hello for 0 neighbor(s)
Ethernet0 is up, line protocol is up
Internet Address 10.10.1.1/24, Area 0
Process ID 1, Router ID 10.10.10.1, Network Type BROADCAST, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 10.10.10.1, Interface address 10.10.1.1
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:01
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 0
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
Lower#sh ip ospf
Routing Process "ospf 1" with ID 10.10.10.1
Supports only single TOS(TOS0) routes
Supports opaque LSA
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
Number of external LSA 0. Checksum Sum 0x000000
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
External flood list length 0
Area BACKBONE(0)
Number of interfaces in this area is 2 why is it 2 interfaces here???
Area has no authentication
SPF algorithm executed 2 times
Area ranges are
Number of LSA 2. Checksum Sum 0x01666F
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0
Lower#
