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DFA and Ciena Set World Record with 1.6 Tbps Fibre Trial in South Africa

August 27, 2025
2 min read
Author: Joyce Onyeagoro

The trial was conducted over a 40 km stretch between Isando and Midrand, using DFA’s high-capacity core network. The route chosen replicates a previous trial that had demonstrated 400 Gbps capability.

DFA , South Africa’s premiere enterprise connectivity provider, and Ciena  (NYSE: CIEN), a global leader in high-speed connectivity, have achieved a landmark breakthrough in fibre capacity – delivering more than 4 times the performance of previous trials.

In this world-first trial, using Ciena’s innovative WaveRouter  and WaveLogic 6 Extreme  solutions, DFA successfully transmitted 1.6 Tbps (terabits per second) over a single wavelength – setting a new performance benchmark for IP/optical convergence.

The trial was conducted over a 40 km stretch between Isando and Midrand, using DFA’s high-capacity core network. The route chosen replicates a previous trial that had demonstrated 400 Gbps capability.

“This greatly enhances the capability of DFA’s existing network and gives us the confidence that we can meet the growing digital demands of our customers. We can seamlessly onboard next-generation connectivity services in selected regions before scaling them nationwide.”

– Andreas Uys, Chief Technology Officer, MAZIV, DFA’s parent company 

This achievement follows Phase 1 of DFA’s ambitious R800 Million network upgrade, which included deploying Dry Underground Distribution Cabinets (DUDCs) in high-density areas to speed up service delivery.

“We were able deploy this groundbreaking technology because of the high quality of our newly upgraded fibre infrastructure and the robust design of our core network to handle the additional traffic.”

Andreas Uys, Chief Technology Officer, MAZIV, DFA’s parent company 

Powered by Ciena’s WaveLogic capabilities and deployed by Ciena partner, Willcom , WaveRouter will allow DFA to deliver greater scalability, flexibility, and sustainability by integrating 400 Gbps, 800 Gbps, and 1.6 Tbps services within a single router.

“As the leading dark fibre provider in South Africa, DFA is taking bold steps to support the growing connectivity needs of its customers. With Ciena’s optical and routing technologies, DFA is better positioned to deliver high-scale 400 Gbps aggregation today while preparing its network to scale up to 1.6 Tbps and beyond.”

-Virginie Hollebecque, Vice President, EMEA, Ciena 

By combining Ciena’s state-of-the-art optical and routing technologies in a unified, multi-layer architecture, DFA can fully harness the advantages of coherent routing to build a simpler, more robust network. Additionally, Ciena’s Navigator Network Control Suite (Navigator NCS ) provides DFA with one point of control to automate multi-layer network operations and scale wide area network (WAN) traffic, delivering capacity precisely when and where it’s needed.

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