The Japan Network Access Point (JPNAP) is an

Internet Exchange Point Internet exchange points (IXes or IXPs) are common grounds of Internet Protocol, IP networking, allowing participant Internet service provider, Internet service providers (ISPs) to exchange data destined for their respective networks. IXPs are ...

situated in

Tokyo Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most ...

and

Osaka is a Cities designated by government ordinance of Japan, designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the List of cities in Japan, third-most populous city in J ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. JPNAP was established on 2001 and operated by Internet Multifeed Co. JPNAP is one of the largest Internet Exchanges in the world, by traffic. JPNAP provides 10 GE, GbE, FE interfaces and also provides

Link aggregation In computer networking, link aggregation is the combining ( aggregating) of multiple network connections in parallel by any of several methods. Link aggregation increases total throughput beyond what a single connection could sustain, and prov ...

. The

and

sites are approximately 500km apart, but they are not connected. JPNAP network is already

IPv4 Internet Protocol version 4 (IPv4) is the first version of the Internet Protocol (IP) as a standalone specification. It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. ...

/ v6

Dual-stack Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IP ...

ed. However, they also provide

IPv6 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...

-only service through their

called JPNAP6.

Technology

JPNAP has two distinguishing features : the first is "Automatically switched optical

patch panel A patch panel is a device or unit featuring a number of jacks, usually of the same or similar type, for the use of connecting and routing circuits for monitoring, interconnecting, and testing circuits in a convenient, flexible manner. Patch ...

" and the other is "PeerWatcher". When the "automatically switched optical patch panel" finds a failure in the IX switch, it switches

patch cable A patch cable, patch cord or patch lead is an electrical or fiber-optic cable used to connect ("patch in") one electronic or optical device to another for signal routing. Devices of different types (e.g., a switch connected to a computer, or ...

to the other IX switch automatically. Even if the patch panel has power problems, there's no effect on the communication, except for the detection of IX switch status. "PeerWatcher" shows a graph of the traffic between the two BGP routers faced on JPNAP network using sFlow.

References

{{Reflist

External links

JPNAP web
Internet in Japan Internet exchange points in Asia

Technology

See also

References

External links