Mission Apollo: Landing Optical Circuit Switching at Datacenter Scale

@article{Urata2022MissionAL,
  title={Mission Apollo: Landing Optical Circuit Switching at Datacenter Scale},
  author={Ryohei Urata and Hong Liu and Kevin Yasumura and Erji Mao and Jill Berger and Xiang Zhou and Cedric F. Lam and Roy Bannon and D. Hutchinson and Dan Nelson and Leonid B. Poutievski and Arjun Singh and Joon Suan Ong and Amin Vahdat},
  journal={ArXiv},
  year={2022},
  volume={abs/2208.10041}
}
In this paper, we describe Apollo, to the best of our knowledge, the world’s first large-scale production deployment of optical circuit switches (OCSes) for datacenter networking. We will first describe the infrastructure challenges and use cases that motivated optical switching inside datacenters. We then delve into the requirements of OCSes for datacenter applications: balancing cost, port count, switching time, and optical performance, which drive design choices and implementation details of… 

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References

SHOWING 1-10 OF 44 REFERENCES

Sirius: A Flat Datacenter Network with Nanosecond Optical Switching

Sirius, an optically-switched network for datacenters providing the abstraction of a single, high-radix switch that can connect thousands of nodes---racks or servers---in a datacenter while achieving nanosecond-granularity reconfiguration, is proposed.

c-Through: part-time optics in data centers

This work proposes a hybrid packet and circuit switched data center network architecture (or HyPaC) which augments the traditional hierarchy of packet switches with a high speed, low complexity, rack-to-rack optical circuit-switched network to supply high bandwidth to applications.

Jupiter evolving: transforming google's datacenter network via optical circuit switches and software-defined networking

It is shown that the combination of traffic and topology engineering on direct-connect fabrics achieves similar throughput as Clos fabrics for the authors' production traffic patterns, and OCS achieves 3x faster fabric reconfiguration compared to pre-evolution ClosFabric.

Integrating microsecond circuit switching into the data center

This paper designs and implements an OCS prototype capable of switching in 11.5 us, and uses this prototype to expose a set of challenges that arise when supporting switching at microsecond time scales and proposes a microsecond-latency control plane based on a circuit scheduling approach the authors call Traffic Matrix Scheduling (TMS).

COUDER: Robust Topology Engineering for Optical Circuit Switched Data Center Networks

COUDER is proposed, a robust topology and routing optimization framework for reconfigurable optical circuit switched data centers that achieves about 20% higher throughput, and about 32% lower average hop count compared to cost-equivalent static topologies.

RotorNet: A Scalable, Low-complexity, Optical Datacenter Network

While RotorNet dynamically reconfigures its constituent circuit switches, it decouples switch configuration from traffic patterns, obviating the need for demand collection and admitting a fully decentralized control plane.

Realization and Application of Large-Scale Fast Optical Circuit Switch for Data Center Networking

To realize the full potential of optical switches, such as scalability and cost effectiveness, the role of large-scale optical circuit switches is analyzed and the realization technologies that combine the two dimensions of space and wavelength are discussed.

Helios: a hybrid electrical/optical switch architecture for modular data centers

This work presents Helios, a hybrid electrical/optical switch architecture that can deliver significant reductions in the number of switching elements, cabling, cost, and power consumption relative to recently proposed data center network architectures.

Optical switch fabrics for ultra-high-capacity IP routers

This paper presents and discusses several optical switch fabric technologies and describes a promising approach based on arrayed waveguide gratings and fast wavelength tuning and explains the challenges with respect to technical and commercial viability.

Optical Packet and Burst Switching Technologies for the Future Photonic Internet

  • S. Yoo
  • Physics
    Journal of Lightwave Technology
  • 2006
This paper reviews advanced optical burst switching (OBS) and optical packet switching (OPS) technologies and discusses their roles in the future photonic Internet. Discussions include optoelectronic