From: Sandro Ciffali (sandyccie@xxxxxxxxx)
Date: Thu Jun 06 2002 - 13:11:29 GMT-3
There are two ways you can tackle this issue, One way
is as you said use confed. instead of route reflector.
Second way i have not tried myself but I think it will
work is to add network statement under bgp on R4 and
use proper filtering so that it does not go back.
Let me know if you have tried any of this or need more
explanation on this.
Sandeep
8988
--- Jun Jia <ellenjjl@rogers.com> wrote:
> Hi,
>
> From your discription of the problem,
> 200.100.100.0/24 is not synchronized
> at R4. The reason is that for IGP (ospf), this
> network is learned from
> Router 2 (it is an ASBR) (not Router 3), while for
> BGP, it is learned from
> Router 3 not Router2. So according to BGP/IGP
> synchronization rules for
> OSPF/BGP, the network should be learned from the
> some Router, otherwise it
> says not synchronization.
>
> Exception for configuring R3, R4,R5 as BGP
> Confederations, actually I don't
> know what is the solution of this problem.
> If someone knows any other ways, please tell me as
> well.
>
> refer: http://www.cisco.com/warp/public/459/25.shtml
>
>
> Regards,
>
> Joe
>
> ----- Original Message -----
> From: "Paul" <p_chopin@yahoo.com>
> To: <ccielab@groupstudy.com>
> Sent: Wednesday, June 05, 2002 10:58 PM
>
>
> > Hi group,
> > I just run into another interesting little
> problem.
> > I have R1-R2---R3
> > | |
> > \ /
> > R4---R5
> > R1 is running RiP. R2,R3,R4,R5 are running ospf.
> R2 is
> > redistributing rip into ospf domain.R1 is
> inserting
> > route 200.100.100.0/24 to BGP through network
> > statement and Redistributing this route into Rip
> as
> > well. R1 is in AS1 , R2 in AS3, and R5,R4,R5 in As
> > 3.EBGP sessions R1-R2, R2-R3. IBGP sesions R3-R4,
> > R4-R5. R4 is route reflector.Synch is enable on
> all
> > the routers.Question is why on R4 BGP table says,
> that
> > route 200.100.100.0/24 is not synchronized even
> it's
> > known through ospf and is not being pushed to R5.
> > All routers have hard coded identical routers id
> in
> > ospf and BGP.
> > I've been struggling almost a week with this one.I
> > searched and read white papers on CCO - I still
> don't
> > understand.I'm missing really something
> important.
> > Can you help?
> > Paul
> >
> >
> >
> >
> >
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