Abstract
Next Generation Internet Optical Network for Regional Access using
Multi-wavelength Protocols (NGI ONRAMP) is a pre-competitive consortium
sponsored by DARPA. Its mission is to develop architectures, protocols, and
algorithms for wavelength division multiplexing (WDM)-based regional access
networks that will effectively support the NGI. A reconfigurable WDM test bed
is being built to demonstrate some of the key thrusts of the
consortium,including dynamic service provisioning and optical flow switching,
service protection in the optical domain, medium access control protocols, and
network control and management geared for the efficient transport of Internet
traffic over WDM networks. The ONRAMP test bed will consist of a feeder
network connecting via access nodes to distribution networks on which the end
users reside. ONRAMP network reconfiguration is enabled by access nodes that
contain both optical and electronic switching components, allowing data
traffic to be routed all-optically through the network or to be switched and
aggregated by electronic Internet Protocol (IP) routers. This paper describes
the goals and basic architecture of the ONRAMP test bed, as well as the
design, construction, and characterization of the network access nodes. To
illustrate test bed operation, we demonstrate optical flow switching over the
test bed that achieves Gb/s throughput of TCP data between end user
workstations.
© 2000 IEEE
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