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Figure 71: Expanded TeraPaths Testbed.

7.

Expansion to US ATLAS Tier 2 sites:

We initiated contact and negotiations for expanding the TeraPaths testbed

infrastructure to several ATLAS Tier 2 sites (see Figure 71). The

expanded

testbed will

serve research and development needs, and allow the testing of the advantages,

reliability, and effect of prioritized data transfers in a production-grade environment.

This will enable the future step of fully incorporating TeraPaths capabilities into

production environments. On 10/23/07, a dedicated L2 network circuit (VLAN) was

successfully established between BNL and BU. Figure 72 shows the topology of this

VLAN, which is different than other existing VLANs in the following respects:

·

It spans five disparate administrative domains, each of which uses heterogeneous

network

technologies. It involves two national networks (ESnet and

Internet2), one regional network (NoX), and two local area networks (BNL and

BU).

·

The configuration and setup can be easily automated by TeraPaths for scalability,

performance, and enhanced network utilization.

·

All VLAN segments are Quality of Service aware and support fine-grained

bandwidth provisioning.

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