From: Ivan (ivan@iip.net)
Date: Fri Dec 22 2006 - 10:12:54 ART
You need to force R4 see routes originated at R3. To achieve this goal you
need to run "different" routing protocol. This protocol also can be "the
same" as R3-R4.
I.e. run first ospf instance between R2 and R3. Another instance between R3,
R4. And then mutual redistribution between both of this intstances.
On Friday 22 December 2006 15:05, haducbinh wrote:
> Hi GS!
>
> This is topology: R1------R2----R3----R4-----R5
>
> IGP information:
>
> R2,R3,R4: running OSPF
>
> BGP information:
>
> R1 in AS 1000
>
> R5 in AS 5000
>
> R2,R3,R4 in AS 100, must enable synchronyzation all router and R3 is
> route-reflector of R2, R4
>
> The problem is: R1 advertise network "X" to R2 via BGP, then R2
> redistribute network "X" to OSPF because of BGP synchronyzation rule, and
> at R4 received 2 route "X": one via OSPF(with router-id R2) and one via
> BGP(with router-id R3). Because of this, route "X" unsyn. So R4 DO NOT
> advertise route "X" to R5!
>
> I can not find solution to this situation! Can not change bgp router-id on
> R3 equal with ospf router-id on R2 (if we do that, route "X" via BGP on R3
> will unsyn).
>
> Could anyone help me with this?
>
> Thanks!
>
> HaDucBinh
> Email: <mailto:haducbinh@vnpro.org> haducbinh@vnpro.org
> Y/M: haducbinh
> Phone: +84 908 191 322
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-- Ivan
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