Redistribute BGP into EIGRP

[kousikdutta]

Hi,

Im new in networking. Im doing a lab where Im trying to see bgp loopback ip ( i.e 3.3.3.3 ) in eigrp. I m not able see.

But while im adding a static route at Null 0 and adding 3.3.3.3 in eigrp network statement then its showing.

in R2 ( whoich is border router between R1 & R3 )

TOPOLOGY

==========

        EIGRP 12                 BGP 23

 R1 ==========> R2=============>R3




Please find the config:-

R2

===

R2#sh run | s r bgp
router bgp 23
no synchronization
bgp log-neighbor-changes
network 200.200.200.200 mask 255.255.255.255
neighbor 10.10.23.3 remote-as 23
neighbor 10.10.23.3 next-hop-self
no auto-summary
R2#sh run | sec r eigrp
router eigrp 12
redistribute bgp 23 metric 100000 1 255 1 1500
network 192.168.12.0
network 202.202.202.0
distribute-list 1 in Ethernet1/0
distance eigrp 12 20
no auto-summary
R2#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES NVRAM administratively down down
Ethernet1/0 192.168.12.2 YES NVRAM up up
Ethernet1/1 10.10.23.2 YES NVRAM up up
Ethernet1/2 unassigned YES NVRAM administratively down down
Ethernet1/3 unassigned YES NVRAM administratively down down
Loopback0 200.200.200.200 YES NVRAM up up
Loopback1 202.202.202.202 YES NVRAM up up







R1

==




R1#sh ip int br | ex down|unass
Interface IP-Address OK? Method Status Protocol
Ethernet1/0 192.168.12.1 YES NVRAM up up
Loopback0 101.1.0.1 YES NVRAM up up
Loopback2 102.1.0.1 YES NVRAM up up
R1#
R1#sh run | sec r bgp
R1#
R1#sh run | sec r eig
router eigrp 12
network 101.1.0.1 0.0.0.0
network 102.1.0.1 0.0.0.0
network 192.168.12.0
no auto-summary




R3

==

Router#sh ip int br | ex down|unass
Interface IP-Address OK? Method Status Protocol
Ethernet1/0 10.10.23.3 YES NVRAM up up
Loopback0 3.3.3.3 YES NVRAM up up
Router#sh run | sec r bgp
router bgp 23
no synchronization
bgp log-neighbor-changes
network 3.3.3.3 mask 255.255.255.255
neighbor 10.10.23.2 remote-as 23
neighbor 10.10.23.2 next-hop-self
no auto-summary

Pls suggest me how to get the 3.3.3.3 route in R1 and the reason.

Thanks,

Arka

[pmckenzie]

I think the problem may be that you need to include the following on router 3

router bgp 23

bgp redistribute-internal

Here is a link from our friends at Cisco providing BGP OSPF example

https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/200782-Configure-Redistributing-Internal-BGP-Ro.html

[paul driver]

hello

@pmckenzie good call I didn’t notice it was an ibgp peering 

[Georg Pauwen]

Hello,

on R2, you have:

distribute-list 1 in Ethernet1/0

What is the content of this access list ?

[paul driver]

Hello

Also why are you changing admin distances for eigrp and what is the distribution list filtering on?

lastly advertise r2 192.x.xx in both routing processes 

rtr2

router xxx

network 192.168.12.0 mask 255.255.255.0

[Georg Pauwen · Accepted solution]

Actually, you need

bgp redistribute-internal

on R2. 

The following rule applies:

iBGP routes are not redistributed into an IGP unless the router BGP process has the command bgp redistribute-internal

[kousikdutta]

Once I given the command you said now I can see BGP routers in OSPF as E2 routes.