From: Niche (jackyliu419@gmail.com)
Date: Sun Sep 18 2005 - 06:30:34 GMT-3
Hm...
BGP and OSPF redistribution problem, sounds like a router-id mismatch? any
debug message?
I am not sure what exactly went wrong but BGP and OSPF are surely not a good
couple ... especially when you are talking about redistribution.
Just my 2 cents.
Cheers~
Jacky
On 9/18/05, jachandr@cisco.com <jachandr@cisco.com> wrote:
>
> Just want to add to Ryan's point. By default, iBGP redistribution into
> IGP is disabled.
>
> We may have to use the "bgp redistribute-internal" command to enable
> redistribution of iBGP routes into IGP.
>
> Thanks
>
> Jay Chandradas
> Cisco Systems Inc.
> CCIE#8060 ( Security , Routing/Switching )
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Private Ryan
> Sent: Saturday, September 17, 2005 8:59 PM
> To: Curt Girardin
> Cc: cciein2006@yahoo.com; GroupStudy CCIE-Lab
> Subject: Re: Redistributing BGP Into OSPF
>
> As the IOS said, redistribute iBGP to IGP is dangerous because it may
> cause routing loop. Thus, you need to enter "bgp redistribute-internal"
> to make sure that you understand the risk and do redistribution.
>
>
> Ryan
>
>
>
>
> 2005/9/18, Curt Girardin <curt.girardin@chicos.com>:
> > You're not alone. I had this very same problem about a year ago in a
> > work-related lab. Then I beat my head against the wall again a couple
>
> > weeks ago while revisiting that lab. Hopefully I don't forget again.
> >
> > Curt
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of cciein2006@yahoo.com
> > Sent: Saturday, September 17, 2005 7:05 PM
> > To: ccielab@groupstudy.com
> > Subject: Redistributing BGP Into OSPF
> >
> > I almost smashed my router on this one.
> >
> > Task was to redistribute BGP routes into OSPF. Doyle books say simply
> > type "redistribute bgp as_num subnets" under OSPF and voila - it
> > should work. It doesn't. Halabi doesn't help either.
> >
> > Turns out there is a problem redistributing iBGP learned routes into
> > IGP.
> > Three hours of troubleshooting later I found the bgp
> > redistribute-internal command and finally worked.
> >
> > Just wanted to vent my frustration because the routing bibles only
> > mention a problem of redistributing too many BGP routes and
> > overwhelming the IGP.
> >
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