Kevin Loch wrote:
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.
That has nothing to do with what I was trying to say. When one mixes shorter/longer paths, you will generally see most of your traffic come in via the shorter path. It's like if I were to multihome with the local cable co (who has Level3 as an upstream) with a connection to Level3 myself. It's not likely that traffic inbound to me is going to choose the longer route unless the shorter one is down, and it's pointless as a backup because a regional outage affecting Level3 may kill the cable co's link to them as well. ~Seth