issue in redistributing routes from EIGRP to BGP

[gavin han]

Hi,

I'm having issue in redistributing eigrp in to bgp. please check attached file.

I'm redistributing 10.10.1.0/24 into BGP from eigrp as show in the attached file. but the routes aren't advertized.

please help!

[cadet alain]

Hi,

They are not appearing in rtr A rib ? did you configure next-hop-self on rtr B? verify they are known as EIGRP routes in B with  show ip route eigrp and they are redistributed with sh ip bgp.

Then see if they are in rtr A BGP table and if there is not a > sign before the prefix then do a sh ip bgp and you'll know why it is not considered a best route.If you see next-hop inaccessible then you'll have to issue the command neighbour x.x.x.x next-hop-self on rtr B for peering with router A.

Regards.

Alain.

[gavin han]

Router B:

I did "sh ip bgp" and saw all these static routes with "s>" at the beginning.

router A:

don't see these routes in the routing table.

please help

[cadet alain]

hi,

It means they are suppressed because of the summary-only keyword in the aggregate command.

You should see the summary advertised to A and installed in the routing table of A.

Regards.

Alain.

[Fabio Francisco]

Hey mate few things to check:

- as above stated verify that you have no auto summary enabled in EIGRP

- redo your route-map and access-list like:

route-map EIGRP-BGP permit 10

match ip address REDISTRIBUTION

set metric 102400 1 255 1 1500

ip access-list extended REDISTRIBUTION

permit ip 10.10.1.0.0 0.0.0.255 any

HTH

Cheers,

Fabio

[cadet alain]

Hi Fabio,

I don't thinj BGP will understand this metric, don't forget he is redistributing from EIGRP into BGP.

If  auto-summary was on in EIGRP then B would receive the summary(/8) and not the individual prefixes and so these wouldn't match the ACL and there wouldn't be any redistribution into BGP.

Can Gavin post the following outputs on B :

-sh ip ro eigrp

-sh ip bgp | i 10

-sh run | s bgp

Regards.

Alain.

[Fabio Francisco]

Hi Alain,

You are definately right. I pasted the wrong part of my config.... thanks for pointing that out...

I only mentioned metric because i have come accross situations where the routing table would no redistribute unless specifying a metric...