Re: Multi-homed implementation and BGP convergence time

[Kevin Loch <kloch () kl net>]

Seth Mattinen wrote:
> Jay Hennigan wrote:
> > "Tier 1", "tier 2" etc. are terms used primarily by salespeople, and
> > don't have a lot to do with technical matters.
>
> Sure it does. If you're multihoming it will increase your AS path length.

There is no general correlation between AS path length and whether
or not a network pays to exchange traffic.

There is a noticeable correlation between cost and local-preference,
as-path prepending, metric setting and other ways networks control
how they send you traffic.  This is affected by peering selectivity
as well as transit prices.


- Kevin