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Distributing routes between multiple AS typologies not working between BGP

CiscoPurpleBelt
Level 6
Level 6

See attached diagram diagram of lab topology.

So OSPF 100 routes/interfaces communicate fine with BGP 65001, and likewise between EIGRP100 and BGP65000. 

But routes from OSPF and EIGRP are not being shared through the 2 BGP Autonomous Systems meaning nothing from EIGRP 100 can ping anything from OSPF 100 and vise versa. The 2 BGP AS communicate just fine.

I just have basic BGP configs and know I am missing something just not sure what - see below.

R5#sh running-config | section eigrp
router eigrp 100
network 5.5.5.5 0.0.0.0
network 203.2.2.0
redistribute bgp 65000
redistribute eigrp 100
R5#sh running-config | section bgp
redistribute bgp 65000
router bgp 65000
bgp router-id 5.5.5.5
bgp log-neighbor-changes
network 5.5.5.5 mask 255.255.255.255
network 203.1.1.1
network 203.3.3.0 mask 255.255.255.252
redistribute eigrp 100
neighbor 203.1.1.2 remote-as 65001
neighbor 203.3.3.2 remote-as 65000

 

 

----------------------------------------

 

 

R2#sh run | section ospf
router ospf 100
redistribute bgp 65001 subnets
network 4.4.4.4 0.0.0.0 area 1
network 10.3.3.0 0.0.0.255 area 1
R2#sh run | section bgp
redistribute bgp 65001 subnets
router bgp 65001
bgp router-id 4.4.4.4
bgp log-neighbor-changes
network 4.4.4.4 mask 255.255.255.255
network 10.3.3.2
neighbor 203.1.1.1 remote-as 65000

16 Replies 16

Sorry about the diagram, I cleaned it up a bit see attached - not exactly drawing the best circles to illustrate the participating routers, but my config is correct.

So R2 is BGP65001 and the toher routers in Orange are OSPF.

R5 is in green as well, BGP 6500. EIGRP is blue.

Ok looks like one I added the actual network statements of the connecting interface subnets under BGP everything works! Thanks everyone!

 

R2#sh running-config | b router
router ospf 100
router-id 4.4.4.4
redistribute bgp 65001 subnets
network 4.4.4.4 0.0.0.0 area 1
network 10.3.3.0 0.0.0.255 area 1
default-information originate
!
router bgp 65001
bgp router-id 4.4.4.4
bgp log-neighbor-changes
network 4.4.4.4 mask 255.255.255.255
network 203.1.1.0 mask 255.255.255.252
redistribute ospf 100
neighbor 203.1.1.1 remote-as 65000

 

-------------------------------------

R5#sh running-config | b router
router eigrp 100
network 5.5.5.5 0.0.0.0
network 203.2.2.0
redistribute bgp 65000 metric 10000 100 255 1 1500
!
router bgp 65000
bgp router-id 5.5.5.5
bgp log-neighbor-changes
network 5.5.5.5 mask 255.255.255.255
network 203.1.1.0 mask 255.255.255.252
network 203.3.3.0 mask 255.255.255.252
redistribute eigrp 100
neighbor 203.1.1.2 remote-as 65001
neighbor 203.3.3.2 remote-as 65000

 

 

-----------------------------------------------

 

R5#sh running-config | b router
router eigrp 100
network 5.5.5.5 0.0.0.0
network 203.2.2.0
redistribute bgp 65000 metric 10000 100 255 1 1500
!
router bgp 65000
bgp router-id 5.5.5.5
bgp log-neighbor-changes
network 5.5.5.5 mask 255.255.255.255
network 203.1.1.0 mask 255.255.255.252
network 203.3.3.0 mask 255.255.255.252
redistribute eigrp 100
neighbor 203.1.1.2 remote-as 65001
neighbor 203.3.3.2 remote-as 65000
!

 

R5#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/56/72 ms

 

 

 

 

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