"your direct peering can be slow and congested, while there's actually a longer but faster path through someplace else...." Possible, but unlikely for most networks. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com ----- Original Message ----- From: "Valdis Kletnieks" <Valdis.Kletnieks@vt.edu> To: "Eric A Louie" <elouie@yahoo.com> Cc: "NANOG List" <nanog@nanog.org> Sent: Sunday, April 3, 2016 6:04:14 PM Subject: Re: What services does Microsoft AS8075 provide when peering at IXPs? On Fri, 01 Apr 2016 18:02:56 -0000, Eric A Louie via NANOG said:
I suppose we have a customer who is an Azure customer that wants to know if their Azure traffic will stay in our network or still go through the Internet.
As a practical matter, if they're using the answer for a security baseline, they're doing it wrong - they should be planning that based on the assumption that their traffic *will* ride the rails of the commodity Internet (due to outages or whatever). Similarly, if they're looking at it for performance/latency, they need to fix their assumptions - your direct peering can be slow and congested, while there's actually a longer but faster path through someplace else....