How to detect an IXP

[brannondorsey]

Right now we are using a 25km radius around a hop to detect if that hop was perhaps located at an IXP. Perhaps we can use this metric + a change in ASN (Autonomous System Number) to more accurately tag IXP hops.

See also The Art of Peering.

[brannondorsey]

Ooo, better yet, there is a new tool for trying to guess which traceroute hops cross IXPs. Here is the repo.

[brannondorsey]

Here is a link to a 2016 paper describing leading research into detecting traceroutes that cross IXPs.