North American Network Operators Group
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Re: Community NO-EXPORT

  • From: Bradley Dunn
  • Date: Wed Aug 23 12:58:31 2000 
On Wed, Aug 23, 2000 at 10:03:21AM -0400, Kai Schlichting wrote:
> Correct me if I'm wrong, but isn't there a synchronization issue here
> as well? E.g.: AS2 is transit provider, probably has bgp synchronization
> on (default), and will only propagate routes to other AS's that have
> made it into their IGP. The question then is: have all 3 routes made
> it into AS2's IGP successfully? Only if the answer is yes, will it
> actually propagate that /16.

Synchronization is almost universally disabled in the real world.

None of the IGPs in use today would cope well with a full BGP
table redistributed into them. Redistribution of BGP->IGP is
rarely needed or advisable.