BGP ---->> IGP Redistribution..

From: Marco Geatti (MGeatti@xxxxxxxxxx)
Date: Sat Jan 27 2001 - 12:15:20 GMT-3


   
Could someone verify this.
I have been trying to redistribute BGP into OSPF for hours and noticed
something that I have never caught before.
BGP can only be redistributed into IGP (OSPF in my case) if the route was
learned via EBGP. If the route was learned via IBGP the route will not
redistribute. It makes sense as redistribution of IBPG learned routes could
cause a nasty loop.
Is anyone familiar with this behavior?
I'm running 'no sync' on my redistribution router an have all have the
'subnets' keyword on my redistribute command for OSPF.
I see the same behavior when using EIGRP also.
I also noticed that if you generate an aggregate of the specific routes
learned via IBGP then it will let you redistribute the aggregate, maybe
because it is locally generated??

Comments anyone...



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