Application Technology Demonstration Network (ATDNet)

Objective: Provide HPCC ESS and NREN Projects with effective testbed for gigabit network R&D.

Approach:

• Participate in Washington DC based 2.4 Gbps SONET/ATM metropolitan area network testbed involving and interconnecting ARPA, DIA, DISA, GSFC, NRL, and NSA.
• With NASA NREN Project, investigate and resolve problems with multi-vendor standards-based SVC interoperability, and IP addressing, routing, multicasting, and firewalling over ATM.

Accomplishments: Installed and demonstrated successful ATDNet Initial Operating Configuration on May 1, 1994; Initiated plans to support ARPA-funded ACTS experiments using HDRT atGGSFC accessed via ATDNet; Initiated plans to extend ATDNet to GSFC's Laboratory for Terrestrial Physics to enable ATM-based access to EROS Data Center via an interconnection of ATDNet and MAGIC as part of the ACTS ATM InterNetwork experiment.

Significance: Participation in ATDNet facilitates significant leveraging of DoD funding to develop solutions to problems inherent with TCP/IP-based communications over networks with a large bandwidth-times-delay product.

Status/Plans:

• FY95: Develop and use Protocol Implementation Conformance Statement (PICS) for Q.2931 signaling to evaluate vendor switches; and develop a reference implementation of proposed solutions for IP addressing and routing over ATM.
• FY96: Extend PICS testing to other vendors' switches; and develop a reference implementation of proposed solutions for IP multicasting and firewalling over ATM.

Point of Contact:

Pat Gary
NASA Goddard Space Flight Center
(301) 286-9539
pat.gary@gsfc.nasa.gov

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