enter image description hereI am having trouble with basic OSPF redistribution into BGP. BGP peers between R10 and R12 are up.

I have full connectivity between Area 0. R10 0/0 is also in that area. I cannot get BGP routes from R10->R12 to redistribute into my OSPF area.

If I put a default-information originate always statement in (quad 0's) this will allow connectivity.

I created R28 and was able to get RIP E2 routes into the OSPF, so I am not crazy. R6 shows the E2 route from RIP is getting in. I have tried every method of BGP redistribution (e.g. subnets, connected, metric, etc.). Thoughts greatly appreciated!!

R10 routing configuration:

R10#sh run | sec router
router ospf 1
 redistribute bgp 65000 subnets
 redistribute rip subnets
router rip
 version 2
 redistribute ospf 1 metric 0
 no auto-summary
router bgp 65000
 no synchronization
 bgp log-neighbor-changes
 redistribute ospf 1
 neighbor remote-as 65000
 no auto-summary


R6 routing table:

R6#sh ip route is subnetted, 1 subnets
O [110/3] via, 03:56:04, FastEthernet0/1 is subnetted, 1 subnets
C is directly connected, Loopback0 is subnetted, 1 subnets
O E2 [110/20] via, 00:08:54, FastEthernet1/0 is subnetted, 8 subnets
C is directly connected, FastEthernet1/0
O [110/4] via, 02:20:11, FastEthernet0/1
O [110/4] via, 02:20:12, FastEthernet0/1
C is directly connected, FastEthernet0/0
O [110/3] via, 03:56:06, FastEthernet0/1
O [110/3] via, 03:56:06, FastEthernet0/1
C is directly connected, FastEthernet0/1
O [110/2] via, 03:56:07, FastEthernet0/1

enter image description here

  • Why do you think BGP is not advertising the OSPF routes? Remember that OSPF has a lower AD than iBGP, so the routing table will show OSPF routes over iBGP routes.
    – Ron Maupin
    May 25, 2017 at 18:51
  • Because 15.1.1.x is not being propagated on R6 within the OSPF area. The route is not being sent so the routers cannot find R12. May 25, 2017 at 18:54
  • Can you post the output of show ip bgp? Are you sure that route is in the BGP table?
    – Ron Trunk
    May 25, 2017 at 18:57
  • You are not using OSPF to advertise the network. You would need a network statement in OSPF to advertise that network.
    – Ron Maupin
    May 25, 2017 at 18:59
  • !!!!! Success rate is 100 percent (5/5) May 25, 2017 at 19:05

1 Answer 1


From what I see in your network, you are redistributing from RIP into OSPF, and you are not originating any routes in OSPF. You are then redistributing OSPF into iBGP, but the original RIP route is being seen in the other router through OSPF, not iBGP. That would be normal because OSPF has an AD of 110, but iBGP has an AD of 200. Basically, R6 trusts any routes received from OSPF mare than the same routes received from iBGP, so the OSPF routes get installed into its routing table instead of the iBGP routes.

  • Thank you for the input Ron. I am redistributing bgp 65000, which is the AS for , (R12) . My goal is to create reachability from OSPF-0 to BGP-65000 and vice-versa. May 25, 2017 at 19:02
  • You simply are not advertising the network in any of your routing protocols. You don't have any network statements in RIP, OSPF, or BGP to advertise that network, so none of the routing protocols will advertise it.
    – Ron Maupin
    May 25, 2017 at 19:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.