Hi
I have configured R5 as the Hub and R4 and R6 as the spokes.
I have configured ospf. R4 cannot ping R5s and R6s loopback addresses, however
the serial interfaces can ping each other. I have used 172.12.123.3/24 Please
see my config below and help me.
R4(Spoke)
R4#sho 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
4.0.0.0/24 is subnetted, 1 subnets
C 4.4.4.0 is directly connected, Loopback4
172.12.0.0/24 is subnetted, 1 subnets
C 172.12.123.0 is directly connected, Serial0/0/0
R4#
R4#sho config
Using 1275 out of 245752 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
!
dot11 syslog
ip source-route
!
!
ip cef
interface Loopback4
ip address 4.4.4.4 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
ip address 172.12.123.4 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.12.123.5 405 broadcast
frame-relay map ip 172.12.123.6 405
no frame-relay inverse-arp
!
interface Serial0/0/1
no ip address
clock rate 2000000
!
router ospf 1
log-adjacency-changes
network 4.4.4.0 0.0.0.255 area 456
network 172.12.123.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
line con 0
exec-timeout 0 0
logging synchronous
speed 38400
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end
R4#
R4#sho ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
5.5.5.5 1 FULL/BDR 00:01:42 172.12.123.5 Serial0/0/0
________________
R5 (Hub)
R5#sho 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
5.0.0.0/24 is subnetted, 1 subnets
C 5.5.5.0 is directly connected, Loopback5
6.0.0.0/32 is subnetted, 1 subnets
O IA 6.6.6.6 [110/65] via 172.12.123.6, 00:18:39, Serial0/0/0
172.12.0.0/24 is subnetted, 1 subnets
C 172.12.123.0 is directly connected, Serial0/0/0
R5#
R5#sho config
Using 1331 out of 245752 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
!
dot11 syslog
ip source-route
!
!
ip cef
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice-card 0
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
!
interface Loopback5
ip address 5.5.5.5 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
ip address 172.12.123.5 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.12.123.4 504 broadcast
frame-relay map ip 172.12.123.6 506 broadcast
no frame-relay inverse-arp
!
interface Serial0/0/1
no ip address
!
router ospf 1
log-adjacency-changes
network 5.5.5.0 0.0.0.255 area 456
network 172.12.123.0 0.0.0.255 area 0
neighbor 172.12.123.4
neighbor 172.12.123.6
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
logging synchronous
speed 38400
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end
R5#sho ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
4.4.4.4 1 FULL/DROTHER 00:01:39 172.12.123.4 Serial0/0/0
6.6.6.6 1 FULL/DR 00:01:32 172.12.123.6 Serial0/0/0
R5#
R5#
__________________________
Now on R6 (Hub)
R6#sho 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
5.0.0.0/32 is subnetted, 1 subnets
O IA 5.5.5.5 [110/65] via 172.12.123.5, 00:19:45, Serial0/0/0
6.0.0.0/24 is subnetted, 1 subnets
C 6.6.6.0 is directly connected, Loopback6
172.12.0.0/24 is subnetted, 1 subnets
C 172.12.123.0 is directly connected, Serial0/0/0
R6#
R6#sho config
Using 1236 out of 245752 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R6
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
!
dot11 syslog
ip source-route
!
!
ip cef
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice-card 0
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
!
interface Loopback6
ip address 6.6.6.6 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
ip address 172.12.123.6 255.255.255.0
encapsulation frame-relay
frame-relay map ip 172.12.123.4 605
frame-relay map ip 172.12.123.5 605 broadcast
no frame-relay inverse-arp
!
router ospf 1
log-adjacency-changes
network 6.6.6.0 0.0.0.255 area 456
network 172.12.123.0 0.0.0.255 area 0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
logging synchronous
speed 38400
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end
R6#
R6#sho ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
5.5.5.5 1 FULL/BDR 00:01:36 172.12.123.5 Serial0/0/0
R6#
Please help me out.
Regards
Ahmed
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