North American Network Operators Group
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Re: BGP and aggregation

  • From: Ralph Doncaster
  • Date: Mon May 13 18:34:38 2002 
> > I was thinking of doing iBGP over my transit connections (with a couple 
> > of static routes so the iBGP works) AND over my inter-city circuit.  Any
> > reason why this won't work?
> > 
> > -Ralph
> 
> The loss of igp metric will make it untenable at best. Do it over a
> GRE tunnel, with your regular igp (isis, ospf, eigrp, or shudder rip).

As far as I can tell, GRE doesn't support fragmentation -
i.e. encapsulation of a 1500-byte IP packet that results in a GRE packet
larger than the interface MTU size.

-Ralph