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While the connectivity with America and Europe is provided by SINET3 that within Asia is by

APAN. The connectivity within Asia is very important for researchers in Asia to participate in

HEP experiments in Japan: KEK, Kamioka, and J-PARC... KEK and HEPnet-J are directly

connected with APAN by a 10Gbps L2 path provided by JGN2. APAN has a 10Gbps path to

Korean Research and Education network, a 2.5Gbps path to Chinese Research and Education

network, and 1Gbps path to Taiwan Research and Education network, where many researchers

are participating in HEP experiments in Japan.

Many researchers are participating in HEP experiments in Japan from Russia too. APAN also

provides the connectivity to Russian Research and Education network via Gloriad. KEK has a

dedicated line to Budker Institute of Nuclear Physics at Novosibirsk in Russia, and has been

expecting that the connectivity provided by APAN, Gloriad, and Russian Research and Education

network can replace it. However the quality is not yet sufficient enough to replace it.

SINET3 and APAN are providing backup routes each other. For example, the route to ESnet from

KEK (since April 2008) is given primarily by SINET3's Los Angels line, secondarily by

SINET3's New York line, and thirdly by APAN's USA line.

In addition to the international L3 connectivity mentioned above, SINET3 is preparing to support

L2- and L3-VPN's in the international lines. So, for example, by combining L2-paths provided

by SINET3 and those by Geant at MANLAN, L2-paths connecting KEK and CERN or ICEPP/U-

Tokyo and CERN can be created.

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