Arista Networks Completes 400G ZR Interoperability Testing

Aimed at accelerating 400G adoption for Data Center Interconnect (DCI), Arista Networks (NYSE:ANET) has announced successful interoperability testing between multiple 400G ZR suppliers over Microsoft’s 120km open line system testbed.

This multi-vendor testing would set the foundation for a “healthy, interoperable, coherent” optics ecosystem, providing customers with a multitude of options for building high speed Data Center Interconnect (DCI) networks.

400G ZR would be a good fit for cloud service providers’ “next generation” DCI networks as it addresses the need for interoperable, high-density and cost-effective metro capacity. With the same density as standard grey optics, the technology would offer up to 25Tbp/s of bandwidth in a single fiber pair by squeezing spectrally “efficient coherent” signals into standard QSFP-DD modules.

Next-generation routers with enhanced thermal management need to accommodate different 400G ZR vendors and are key to enabling a viable multi sourced ecosystem. With the support of Arista’s 7800R3 routing platforms, Microsoft’s transmission testing would confirm “excellent” optical and thermal performance over a variety of 400G ZR vendors.

“We are very pleased with the demonstrated performance of the 400G ZR transceiver modules,” said Hacene Chaouch, Distinguished Engineer at Arista Networks. “Being able to seamlessly support modules from multiple 400G-ZR vendors on our standard routing platforms constitutes a significant advancement in the DCI space.”

Bandwidth, Data Center Expansion

“We are pleased with the progress on 400G ZR. Thanks to our collaboration with OIF, we’ve achieved multi-vendor interoperation and cost effective 400G transport,” said Jamie Gaudette, Principal Engineering Manager of Microsoft’s Backbone Network. “It allows Microsoft to offer more bandwidth to our customers and accelerate our data center expansion.”

The Arista 7800R3 is optimized for large scale cloud networks with up to 460Tbps of capacity, combining 100G and 400G performance with comprehensive features for Service Provider, Cloud WAN, Content Edge and Data Center Interconnect (DCI).

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