ABSTRACT
This chapter examines the infrastructure that is deployed and maintained to support DIS. Resting on that foundation are the data transfer and analysis resources connected to those site networks, the software tools that control the movement and placement of scientific data by using the capabilities of the underlying infrastructure, and the experimental facilities and computational resources that generate and analyze the data. The chapter describes the key aspects of network infrastructure that are critical for successful DIS. Typical uses for virtual circuits are to provide Ethernet VLANs with guaranteed bandwidths between distant sites for dedicated data transfers, to provide multiple Ethernet VLANs with different network paths so that redundancy can be achieved, and the delivery of traffic to a particular location in a network as needed. Much like the traditional DMZ, the chapter build a portion of the network, at or near the site perimeter, that is specifically configured to support DIS.
