Commercial 400GbE services has been available on the Southern Cross NEXT (SX Next) cable, between Australia, New Zealand and the United States. The 400GbE service runs on Ciena’s 6500 Packet-Optical Platform.

The Southern Cross NEXT was launches for service in July, 2022, spanning approximately 15,857 km connecting Sydney, Auckland and Los Angeles, with branching units linking the Pacific Islands of Fiji, Tokelau, and Kiribati, forming a network eco-system together with the Southern Cross Cable Network.

Southern Cross network ecosystem


According to Laurie Miller, CEO at Southern Cross Cables, these are believed to be the region’s first international 400GbE services, as well as the longest single system data-centre to data-centre 400GbE services. He says: “With the Southern Cross NEXT cable system, the new technology and capability has been designed to support the rising demand for bandwidth driven by cloud adoption and digitisation. We are now thrilled to be able to offer 400GbE Layer 1 services as the first of several planned innovations taking advantage of the Southern Cross eco-system, and the new NEXT cable.”

400GbE services on SX Next will allow customers hyper-scale low-latency connectivity directly between data-centres in Sydney and Los Angeles, with a new Auckland DC PoP due for implementation in 2023.

The 400GbE service runs on Ciena’s 6500 Packet-Optical Platform, powered by WaveLogic 5 Extreme coherent optics and is managed by the Manage, Control and Plan (MCP) domain controller. To accommodate increasing and changing network traffic demands, Southern Cross’s eco-system also incorporates Ciena’s 5400 and 8700 platforms, providing the ability to deploy services from 100Mbs now up to 400GbE connectivity over applicable wavelengths.