From: Jun Jia (ellenjjl@xxxxxxxxxx)
Date: Sat Jun 08 2002 - 01:47:54 GMT-3
Hi,
If you redistribution on R3, though R4 can be synchronized, r5 still cannot
be synchronized. I said, configure confederation is one of the ways. Others,
I don't know. I remembered this kind issue about OSPF/BGP synchronization
has been discussed a lot beofore.
Joe
----- Original Message -----
From: "Paul" <p_chopin@yahoo.com>
To: "Jun Jia" <ellenjjl@rogers.com>
Cc: <ccielab@groupstudy.com>
Sent: Thursday, June 06, 2002 12:46 AM
Subject: RE:Ospf/BGP Sync
> I think you hit the nail right in the head. What's
> solution to this problem if can't turn off
> synchronization?How about redistribution into ospf on
> R3?
> This is very crucial problem, guys
> --- 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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