From: jachandr@cisco.com
Date: Sun Sep 18 2005 - 03:22:01 GMT-3
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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