North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: BGP and aggregation

  • From: Austin Schutz
  • Date: Mon May 13 15:31:40 2002 
On Mon, May 13, 2002 at 06:57:19AM -0400, PS wrote:
> 
> 
> 
> On Mon, 13 May 2002, E.B. Dreger wrote:
> 
> > As long as this is getting messy... I'm tempted to suggest
> > confederations.  Or spending a few extra bucks on a second ASN,
> > although that doesn't scale.
> 
> Multiple ASNs wouldn't solve anything in this case.  What was wanted was
> under normal circumstances both A and B only announce a /20, and when the
> link between A and B breaks announce more specifics.  Multiple ASN =
> inconsistent AS.. no no.
> 

	Not necessarily. If 'A' originates the aggregate route it can still be
transited via 'B', though with an additional AS hop. Not a perfect solution,
but then neither is running a gre tunnel.

	Austin