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A comment on A Peek Inside a 400G Cisco Network Chip. Parent comment

Re:A Peek Inside a 400G Cisco Network Chip by jlgaddis on Thursday September 14, 2017 @07:29PM (#15253350)
It is. Any links higher than that are pretty much all Nx100G, though there are a few carriers with (limited) 200G waves in production.

For anything over 100G (currently) you're making some sacrifices on distance and may even need some guard bands.

(Short-haul/intra-DC may well be a different story but I doubt that it's very different.)

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Re:A Peek Inside a 400G Cisco Network Chip by myrandomcomment on Friday September 15, 2017 @01:15AM (#15254825)
In the DC 100g is pretty common now.
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Re:A Peek Inside a 400G Cisco Network Chip by lsjdfkljdfwkwdf on Thursday September 14, 2017 @08:07PM (#15253524)
True for routing. For optical 200Gbps DP-16QAM is commercially available.
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