From: steven.j.nelson@xxxxxx
Date: Thu Jun 06 2002 - 04:16:11 GMT-3
Guys
Eddy is right, the problem is that the igp route from R2 is via ibgp and the
igp route is from R3 so BGP says these routes are from different sources and
therefore are "untrustworthy" so hence not synchronised.
Confeds will work fine but you need to learn this one with and without them.
maybe use an igp that does not depend on RIDs such as eigrp etc etc.
Have a play with it and know it back to front you'll need it.
HTH
Steve
-----Original Message-----
From: Paul [mailto:p_chopin@yahoo.com]
Sent: 06 June 2002 06:24
To: Fong, Eddy
Cc: ccielab@groupstudy.com
Subject: RE:
Is there any remedy except confederations?
Paul
--- "Fong, Eddy" <Eddy.Fong@hp.com> wrote:
> I think we have come across this issue before.
> Anyway, it's because the IGP route 200.100.100.0/24
> is from R2. But the iBGP route is from R3. When you
> have OSPF as IGP and want to syn with BGP, the route
> originator R-Ids have to be the same. Otherwaise
> it's not synchronized and, hence, not advertise to
> R5.
>
>
> -----Original Message-----
> From: Paul [mailto:p_chopin@yahoo.com]
> Sent: Thursday, June 06, 2002 10:59 AM
> To: ccielab@groupstudy.com
> Subject:
>
>
> 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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