Abstract
Exploding traffic demands and increasing energy consumptions facing today's networks are
driving the designs of next-generation networking technologies. Cross-layer enabled approaches
will allow for the packet-level control of the optical layer, to enable dynamic resource
allocation and traffic engineering at the physical layer. We demonstrate an intelligent
cross-layer enabled network node that can support high-bandwidth, all-optically routed packets,
using emerging photonic technologies including optical packet switched fabrics and packet-scale
performance monitoring. Using a cross-layer control and management plane, the node can dynamically
optimize optical switching based on higher-layer constraints such as quality-of-service and energy
consumption, as well as quality-of-transmission metrics such as link integrity and bit-error
rates.We demonstrate a first-generation prototype of the cross-layer node, outlining its
architecture and major implemented subsystems. The packet-rate physical-layer reconfiguration of
the node's fabric is shown using an implemented performance monitor and control plane. The
realized node supports 8 × 40-Gb/s wavelength-striped optical packets with pseudorandom data
with error-free transmission (bit-error rates less than 10-12), in conjunction with the
heterogeneous transmission of video traffic using 10-Gigabit Ethernet optical network interface
cards based on field-programmable gate arrays.
© 2013 IEEE
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