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AT&T Activates 400G Circuit on Dallas Atlanta Route

Infrastructure News - Published on Wed, 27 Nov 2019

Image Source: AT&T 400G Circuit Dallas Atlanta
AT&T activated its first 400-gigabit optical connection on a Dallas-to-Atlanta fiber route. The 400G trunk is now carrying live Internet traffic for customers. This connection between Dallas and Atlanta is believed to be a first in the industry. The 400G Dallas/Atlanta facility was deployed on an SDN-enabled Ultra Long Haul system from Ciena. The 400G circuit was routed and configured completely through software using Ciena’s Manage, Control and Plan domain controller. The 400G transport was terminated in the Dallas and Atlanta offices by a white box router from UfiSpace that is compliant with the Broadcom Jericho2 Distributed Disaggregated Chassis design that AT&T recently submitted to the Open Compute Project. 400G pluggable transceivers from InnoLight were installed in the white box router and Ciena transponder to create the cross-office connectivity between the packet and optical technologies. Ciena’s MCP controller is integrated into AT&T’s ONAP management and control framework using an Application Programming Interface specified by the Open ROADM Multi-Source Agreement.

The optical transport system consists of a new 400G transponder based on Ciena’s WaveLogic Ai coherent optical technology. The Ciena Reconfigurable Optical Add/Drop Multiplexors have been upgraded with new software to support a sophisticated feature known as flex grid. This allows, through software control, to optimize the allocation of spectrum on the long-haul fiber based on the required speed and reach of each wavelength. The Broadcom Jericho2 white box was supplied by UfiSpace and provides 10 x 400G interfaces on a 2RU pizza box. The white box uses the Broadcom Jericho2 packet processing chip, a state-of-the-art chip designed to meet the demanding needs of a service provider.

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Posted By : TelecomGuru on Wed, 27 Nov 2019
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