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New Trans-Pacific Cable: Will It Improve Asia Bandwidth?

Submarine Cable MapNEC revealed that they have taken a contract to build a new trans-Pacific fiber-optic cable called JUNO.

The new cable (which will be 10,000km or about 7,000 miles long) is expected to be completed in about two and a half year, starting operating by the end of 2024.

And the bandwidth?  350Tbps.  Now if you figure that the typical LEB link is on 1Gbps shared port, and there’s got to be 20 or so VMs at least with some providers sharing that port…350 * 1000 * 20 = capacity for 7 million new LEBs in Japan!

Well I suppose the rest of Japanese users might take a little of that bandwidth.  Interestingly, the design has redundancy:

This cable will promote the development of digital economies by supporting the strong demand for communications, including the spread of 5G throughout Asia and North America. In addition, by providing communication routes from two separate locations in Japan to the US, the system will be highly resilient to natural disasters in the coastal areas of Japan.

NEC has been building submarine cables for 50 years and has over 300,000km under water at present.

I wonder if the Americans or Russians will be the first to send a submarine down to tap it.


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