Nippon Telegraph and Telephone: Multifeed, IIJ and NTT Com Achieve Asia’s First Internet Interconnect Using 400 Gigabit Ethernet

TOKYO, JAPAN, April 19, 2022-INTERNET MULTIFEED CO. (Multifeed), the provider of JPNAP, one of Asia’s largest internet exchanges (IX1), Internet Initiative Japan Inc. (IIJ), a leading Internet service provider (ISP) in Japan, and NTT Communications Corporation (NTT Com), the international communications and ICT solutions company within the NTT Group, announced today that they had conducted the first successful IX interconnection study in Asia2 using 400 Gigabit Ethernet, which has four times the traffic bandwidth of commonly used 100 Gigabit Ethernet. The demonstration confirmed that 400 Gigabit Ethernet is commercially viable in terms of interoperability and performance for IX (see test configuration below).

The success of the demonstration is expected to accelerate the introduction of 400 gigabit services not only by IX vendors but also by major ISPs and content service providers to increase bandwidth and aggregate IX connection ports for operability and cost effectiveness. improved. Additionally, IXs with increased bandwidth would allow Internet users to benefit from more diverse Internet environments.

In the demonstration, Multifeed, IIJ and NTT Com interconnected 400 gigabit routers and switches manufactured by Arista Networks, Inc, Cisco Systems, LLC and Juniper Networks. to confirm interoperability at the physical and network levels, including optical switches, routing control, and 400 gigabit traffic flow using 400 gigabit interfaces (400G-FR4 and 400G-LR4) in the ‘IX.

Multifeed provided the test environment and verified the interoperability of the 400 gigabit interface. IIJ and NTT Com have verified the interoperability of the 400 Gigabit interface from the perspective of IX service users.

Multifeed will continue to investigate the introduction of a 400 gigabit service for JPNAP, targeting a commercial launch in the fiscal year ending next March, aiming to further enhance and expand its IX services with technologies and services advances. IIJ and NTT Com also aim to introduce the technology to cope with the increase in traffic and thus enhance the mobile Internet as a key social infrastructure.

Internet traffic in Japan continues to grow, especially due to increasing digitalization and, more recently, time spent at home during the pandemic,3 imposing heavier burdens on IXs connecting ISPs.4

JPNAP has provided a 100 gigabit interface since July 2012, and both IIJ and NTT Com use 100 gigabit interfaces for Internet connections. However, with the continued increase in Internet traffic, multiple 100 gigabit interfaces have increasingly been grouped together out of necessity, highlighting the need for a higher bandwidth interface. Standardized 400 Gigabit Ethernet was introduced in 2017 and products compatible with 400 Gigabit interfaces have been available from equipment manufacturers since 2019. The interoperability of these products is crucial for the launch of 400 Gigabit IXs capable of connecting various operators, therefore practical steps are being taken to achieve effective implementation.

Configure tests


INTERNET MULTIFEED operates JPNAP, one of the largest internet exchanges in Asia. JPNAP exchanges over 4.6 Tbps of traffic and is connected by approximately 220 customers worldwide in Tokyo, Osaka, Fukuoka and Sendai. (from April 2022)

About the IIJ

Founded in 1992, IIJ is one of Japan’s leading providers of Internet access and complete network solutions. IIJ and its group companies provide comprehensive network solutions that primarily cater to high-end enterprise customers. IIJ’s services include high quality Internet connectivity services, systems integration, cloud computing services, security services and mobile services. Additionally, IIJ has built one of the largest internet backbone networks in Japan which is connected to the US, UK and Asia. The IIJ was listed on the First Section of the Tokyo Stock Exchange in 2006. For more information about the IIJ, visit the IIJ website at jp/en/.

About NTT Communications

NTT Communications solves global technology challenges by helping enterprises use managed IT infrastructure solutions to overcome complexity and risk in their ICT environments. These solutions are backed by our global infrastructure, including industry-leading global Tier 1 public and private networks spanning over 190 countries/regions and over 500,000 m2 of the most advanced data centers in the world. Now, as the main provider of enterprise services and solutions for the DOCOMO Group, we create value through global support for structural changes in industry and society, new ways of working and digital transformation in communities. Together with NTT Ltd., NTT Data and NTT DOCOMO, we form the NTT Group. | [email protected] Com | [email protected]

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