Abstract
Internet traffic is doubling almost every other year which implies
that datacenter (DC) scalability will play a critical role in enabling
future communications. In this paper, we propose FISSION (Flexible
Interconnection of Scalable Systems Integrated using Optical Networks)—a
scalable, fault-tolerant DC architecture based on a switchless optical-bus
backplane and carrier-class switches, and its supporting protocol. The
FISSION DC enables unprecedented scalability using affordable optics and
standardized electrical switches. It is architecturally bifurcated into
sectors that internally have a nonblocking carrier-class switching
interconnection structure. Sectors are connected in the switchless
backplane using optical buses. Each sector can receive traffic on all
wavelengths (achieved through optical-bus property without any switch
reconfiguration) and across all fibers, but a sector transmits on only a
group of wavelengths and only in one of the fiber rings in the backplane.
The switches function based on an SDN methodology that facilitate mapping
of complex protocols and addresses to DC-specific addressing that is
scalable and easier to use. We present an analysis to optimize the FISSION
architecture. A simulation model is proposed that (1) compares the FISSION
approach to other contemporary designs; (2) provides scalability analysis
and protocol performance measurement; and, (3) provides optical layer
modeling to validate working of the FISSION framework at high line-rates.
Our architecture, which provides 100% bisection bandwidth, is validated by
simulation results exhibiting negligible packet loss and low end-to-end
latency.
© 2016 IEEE
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