redistribution-routes

[ShamsDim]

hi

can anybody help me with this issue

I am trying to redistribute the 192.168.1.1/32 into ospf

BGP in enabled on R1 and R2 only

all the settings are as default

I can see the route in R2's BGP table, but I can't see it in OSPF after redistribution

R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 10.123.1.1 YES manual up up
GigabitEthernet0/1 unassigned YES unset up up
GigabitEthernet0/2 unassigned YES unset up up
GigabitEthernet0/3 unassigned YES unset up up
Loopback0 192.168.1.1 YES manual up up

R1#show running-config | section router
router bgp 100
bgp log-neighbor-changes
network 192.168.1.1 mask 255.255.255.255
neighbor 10.123.1.2 remote-as 200

R2#show ip route bgp | begin Gateway
Gateway of last resort is not set

192.168.1.0/32 is subnetted, 1 subnets
B 192.168.1.1 [20/0] via 10.123.1.1, 00:13:01

R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 10.123.1.2 YES manual up up
GigabitEthernet0/1 10.24.1.2 YES manual up up
GigabitEthernet0/2 unassigned YES unset up up
GigabitEthernet0/3 unassigned YES unset up up
Loopback0 192.168.2.2 YES manual up up

R2#show running-config | section router
router ospf 1
redistribute bgp 200 subnets
network 10.24.1.2 0.0.0.0 area 0
router bgp 200
bgp log-neighbor-changes
network 192.168.2.2 mask 255.255.255.255
neighbor 10.123.1.1 remote-as 100

R2#show ip route ospf | begin Gateway
Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O 10.35.1.0/24 [110/3] via 10.24.1.4, 00:11:33, GigabitEthernet0/1
O 10.45.1.0/24 [110/2] via 10.24.1.4, 00:11:33, GigabitEthernet0/1

[Jon Marshall · Accepted solution]

You won't see it in R2's routing table because R2 is using the BGP route for 192.168.1.1/32 which it redistributes into OSPF. 

To see if the redistribution is working check the routing table on R4, for example, and you should see it there. 

Jon

[MHM Cisco World · Accepted solution]

after recheck and see the topology, 

R1-R2, 
R2 will be select this prefix as best path and install it into routing table, 
R2 will redistribute it into OSPF which will resend it to other routers, so check in other router not R2 routing table.  

[ShamsDim]

yes it's really as you said

R4#show ip route ospf | begin Gateway
Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O 10.35.1.0/24 [110/2] via 10.45.1.5, 09:11:03, GigabitEthernet0/0
192.168.1.0/32 is subnetted, 1 subnets
O E2 192.168.1.1 [110/1] via 10.24.1.2, 09:03:51, GigabitEthernet0/1
192.168.2.0/32 is subnetted, 1 subnets
O E2 192.168.2.2 [110/1] via 10.24.1.2, 09:00:40, GigabitEthernet0/1

Thanks for your help