KDDI Begins Operations of Innovative Metro Network with Cisco and Fujitsu

KDDI Corporation, in collaboration with Cisco Systems and Fujitsu, has commenced operations of a metro network on October 1, 2023 to address the increasing demands of 5G services and data-intensive applications.
KDDI AU store JapanThis network integrates the IP layer network and optical transmission layer, offering a more efficient and environmentally friendly approach to meet the growing communication traffic.

The key highlights of this initiative are as follows:

Integration of IP and Optical Layers:

The metro network integrates the IP and optical transmission layers by utilizing Cisco NCS5500 series routers capable of directly transmitting and receiving optical signals for Wavelength Division Multiplexing (WDM).

Fujitsu’s 1FINITY series Open Line System (OLS) is employed, which can connect with products from other manufacturers through an open interface, reducing the number of devices needed compared to traditional setups.

This innovative approach results in a significant reduction in power consumption, approximately by 40 percent, compared to conventional configurations that require separate routers and transponders for WDM.

Easy Capacity Expansion:

The integrated setup makes it easier to expand network capacity, allowing for rapid responses to the increasing communication traffic.

This streamlined configuration not only saves power but also equipment installation space by eliminating the need for external enclosures for WDM transponders.

With the widespread adoption of 5G services in Japan, the demand for data-intensive services and video content has surged, leading to a rapid increase in communication traffic. KDDI, aiming to achieve net-zero CO2 emissions in its non-consolidated business activities by 2030, recognizes the need to reduce power consumption throughout its operations. The expansion of network infrastructure to meet these communication demands has become a persistent challenge.

KDDI plans to deploy this innovative metro network across Japan by the end of fiscal 2028, expanding its capabilities and contributing to the reduction of CO2 emissions. This strategic move is in line with KDDI’s broader objective to construct an all-photonic network that combines high capacity with low power consumption. By converging the IP and optical transmission layers, this metro network represents a significant step toward realizing an all-photonic network.

The openness of the Fujitsu OLS “1FINITY” series allows for seamless expansion, as it supports open interfaces and can connect with various equipment from other manufacturers. As communication traffic continues to grow, this feature ensures the network’s adaptability and scalability.

KDDI is committed to sustainable network development, and this initiative not only enhances power efficiency but also promotes an open and interconnected approach to network infrastructure. By implementing solutions that reduce power consumption, KDDI aims to make a significant contribution to the reduction of CO2 emissions while delivering cutting-edge connectivity services.