RE: Cogent service

I dont believe that number at all. Not to disagree with you at all Matt. But real world, it would depend on the design. If you are going router to router then it would be closer to accurate. I have seen 1-2ms added per router under load. That also might factor in a hop inside the room between 1 routers or another gear and a router. Coming in one card, having to do a lookup, going out another card to another box then out the layer 1 circuit to the next city.

A VPN might not save this time though. But hubbing to a regional center, and then placing this traffic on an express circuit to the next regional city might save some of these ms.

In other words LA to San Fran, an express fiber route to Chi, then out a peering connection. This would save 5-8ms compared to LA, San Fran, Portland, Salt Lake, Chi where at each hope 1-2 routers would insert themselves into the process.

In my book, 5-8ms is not a real factor....

Dont get me started on speed of light on fiber...