Hi,
please check this diagram, ospf running in frame relay cloud (hub and spoke) everything work fine, but after adding Router 4 (Eigrp) the other routers can't reach to router4 but it can ping Router1 eigrp interface(75.75.75.1).
Router1 config
Building configuration...
Current configuration : 1785 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
archive
log config
hidekeys
interface Loopback1
ip address 192.168.100.1 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 172.12.123.1 255.255.255.0
encapsulation frame-relay IETF
ip ospf authentication
ip ospf authentication-key ccna
serial restart-delay 0
frame-relay map ip 172.12.123.3 103
frame-relay map ip 172.12.123.2 102
no frame-relay inverse-arp
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface FastEthernet2/0
ip address 75.75.75.1 255.255.255.0
duplex full
!
router eigrp 100
network 75.75.75.0 0.0.0.255
no auto-summary
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
redistribute eigrp 100 subnets
network 172.12.123.0 0.0.0.255 area 10
network 192.168.100.0 0.0.0.255 area 0
neighbor 172.12.123.2
neighbor 172.12.123.3
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
Router 1 ip route:-
Gateway of last resort is not set
172.12.0.0/24 is subnetted, 1 subnets
C 172.12.123.0 is directly connected, Serial1/0
10.0.0.0/24 is subnetted, 1 subnets
O IA 10.10.10.0 [110/74] via 172.12.123.2, 18:57:01, Serial1/0
192.168.100.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.100.0/24 is directly connected, Loopback1
O IA 192.168.100.241/32 [110/65] via 172.12.123.2, 18:56:57, Serial1/0
75.0.0.0/24 is subnetted, 1 subnets
C 75.75.75.0 is directly connected, FastEthernet2/0
Router 4 config :-
Building configuration...
Current configuration : 1255 bytes
!
upgrade fpd auto
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
enable secret 5 $1$VDzc$i.iE1GdCmTMg3oG0BeqRK0
!
no aaa new-model
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
archive
log config
hidekeys
ip tcp synwait-time 5
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface FastEthernet1/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/1
ip address 75.75.75.75 255.255.255.0
duplex full
speed auto
!
interface GigabitEthernet2/0
ip address dhcp
negotiation auto
!
router eigrp 100
network 75.75.75.0 0.0.0.255
no auto-summary
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