Quality of Service

ATM adds new dimensions to managing switched internetworks. Because ATM is connectionoriented, our gigapop provider will need to set up virtual circuit connections, monitor link statistics, and report usage. OARnet will do this through its AtmDirector. The AtmDirector automatically discovers and illustrates the topology of the ATM network, displays realtime circuit information, facilitates ATM network interrogation and troubleshooting by allowing selection of any virtual connection on an ATM link, tracking its entire path, and providing an intuitive interface in creating Permanent Virtual Circuits (PVCs) across the ATM network.

Researchers who choose ATM will be able to use the built-in QoS features of permanent virtual circuits and switched virtual circuits. Researchers who choose switched Ethernet to the desktop will also use the ATM backbone to the building and a minimum of 100 Mbps switched Ethernet to the wall jack, which will be monitored and bandwidth increased if it reaches saturation. Cisco's work on QoS over Ethernet can be tested and compared to that of ATM.  This configuration will efficiently manage and operate networking at the campus, regional and national level by identifying those projects requiring high bandwidth and QoS to be separated and placed onto the new ATM network for distribution through the vBNS connection.

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