Re: Outbound Route Optimization

[vijay gill <vgill () vijaygill com>]

On Wed, Jan 21, 2004 at 09:05:46PM +0000, Paul Vixie wrote:
> >             My questions are these:
> >
> > "Is sub-optimal routing caused by BGP so pervasive it needs to be
> > addressed?" 
>
> that depends on your isp, and whether their routing policies (openness
> or closedness of peering, shortest vs. longest exit, respect for MEDs)
> are a good match for their technology/tools, skills/experience, and
> resources/headroom.

In practice, all of the above just turn out to be marketing sauce
or in some cases, outright lies.

There is no substitute for dollar spend (opex and capex) to make
a network perform.  There is no magic sauce, there is no silver
bullet. You have adequate resources, you will have adequate
performance.

> metrics, which is usually not very good.  but there's another limit, which
> is bgp path symmetry.  most tcp implementations are still stone-aged

AKA optimizing for outbound doesn't do you any good on optimizing
for inbound.

> (experience says they're not going to trust your MEDs even if they're close
> enough to hear them.)

Most people don't trust MEDs for a reason paul, and it is not because
they want to mess with your customers.

/vijay