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is practical and economical since end sites do not need to invest in additional, expensive network

infrastructure.

We further acquired the capability of establishing layer 2 network paths between BNL and

University of Michigan, as shown in Figure 73. During SuperComputing 2007, TeraPaths

demonstrated dynamic creation of layer 2 QoS aware network circuits from BNL to Boston

University and to the University of Michigan. The demonstration showed periodically brought up

circuits, performed data transfers, and then tore those circuits down. The plots in Figure 74 show

how TeraPaths can fully regulate the bandwidth of data transfers, in this case from a Tier 1 to two

Tier 2 sites. The support for QoS-aware, bandwidth regulated end-to-end paths is a unique

characteristic of the TeraPaths project in the effort to provide our physicists with data-on-

demands tools.

Figure 74: TeraPaths regulates bandwidth in layer 2 paths between BNL, Umich, and BU.

References:

D. Katramatos, B. Gibbard, D. Yu, S. McKee. TeraPaths: End-to-End Network Path QoS

Configuration Using Cross-Domain Reservation Negotiation. Proceedings of the 3rd

International  Conference  on  Broadband  Communications,  Networks,  and  Systems

(BROADNETS 2006), San Jose, California, USA, October 1-5, 2006.

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