Network World has done an interesting interview with Jay Tumas, who oversees the operations center of Harvard at the heart of the network. From the interview:

Harvard’s data network supports 125,000-plus users, its Border Gateway Complex routes about a half-million IP addresses and the network carts around 150T to 200TB of data per day.

The Harvard Core Network (HCN) serves an extremely diverse user population in metro Boston and beyond. We have everything from dual Gigabit Ethernet feeds serving the entire Harvard College network with tens of thousands of clients and a Class B chunk of address space, to a channelized T-3 circuit serving remote affiliates in Washington, D.C., or a T-1 serving a remote library repository in central Massachusetts. The [University Information Systems] NOC [network operations center] is the primary maintenance organization for the Northern Crossroads (NoX), New England’s Internet2 aggregation point, which serves 1 million-plus users.

This is simply an amazing mindblowing network that they maintain.

From NetworkWorld