Internet exchange using OpenFlow

I came across this post where they are using OpenFlow for Internet Peering Exchange.

Building a better internet exchange with OpenFlow 

I've not really had much involvement with peering so I don't know the operational issues which relate to peering however the aspect of controlling ARP responses and checking them using OpenFlow pretty straightforward.

I'll add this to my list to examine in more detail to understand the real-world aspects of managing peering.