From: CCIE GOAL (ccie.goal@gmail.com)
Date: Wed Jun 06 2007 - 13:06:46 ART
Please disregard it...
I think I found the problem here...
Thanks!
2007/6/6, CCIE GOAL <ccie.goal@gmail.com>:
>
> Hi guys,
>
> I ran into a problem with BGP, maybe it's simple to resolve but I got
> stuck on it.
> People say that sometimes it is easier to spot the issue from outside the
> picture...
>
> Scenario:
>
> [ BGP AS 1 ] -- (OSPF/not in bgp) -- [ BGP AS 2 ] -- [ BGP AS 3 ]
>
> - AS 1 is peering to AS 2
> - AS 2 is peering to AS 3
>
> - Between AS 1 and AS 2; there is some devices in OSPF domain only (Not
> BGP).
>
> - AS 3 is announcing some prefixes, let's say 10.10.X.0/24...
>
> These prefixes are pingable from AS 2 but not from AS 3 even the BGP table
> from AS 3 has these prefix as valid.
>
> The issue is that the OSPF domain do not know how to reach the prefixes
> 10.10.X.0/24.
>
> I am not allowed to use static routes anywhere...
> I have tried to redistribute BGP 2 into OSPF but no success, it seems that
> eBGP learned prefixes are not redistributed...
>
> Can somebody help me on this?
>
> Follow the configs:
>
>
> ---------------------------------------------------
> AS1#
> router bgp 1
> no synchronization
> neighbor 2.2.2.2 remote-as 2
> no auto-summary
> !
> router ospf 1
> network 10.10.1.1 0.0.0.0 area 1
>
> ---------------------------------------------------
> OSPF#
> router ospf 1
> network 10.10.1.2 0.0.0.0 area 1
> network 10.10.2.2 0.0.0.0 area 0
>
> ---------------------------------------------------
> AS2#
> router bgp 2
> no synchronization
> neighbor 1.1.1.1 remote-as 1
> neighbor 3.3.3.3 remote-as 3
> no auto-summary
> !
> router ospf 1
> network 10.10.2.1 0.0.0.0 area 0
> ---------------------------------------------------
>
> AS3#
> router bgp 3
> no synchronization
> neighbor 2.2.2.2 remote-as 2
> no auto-summary
> ---------------------------------------------------
>
>
> Thanks in advance,
> Luciano
This archive was generated by hypermail 2.1.4 : Sun Jul 01 2007 - 17:24:47 ART