this post was submitted on 16 Nov 2023
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I'm pretty sure there are internet backbones with more than 1 terabit of bandwidth. You can buy off-the shelf ethernet modules that will do 800gbit.
Maybe they mean they installed a 1.2tbit fiber line in production? Fiber technology has reached 1 petabit, so 1.2 terabits isn't a world record, either.
I think this news story is just some Chinese superiority propaganda, and the non-technical press is just eating it up.
Yeah my first thought was "eh grab 4 400gbit links and aggregate them and you've got 1.2tbit" granted there's probably some overhead or other bottlenecks that show up when trying to do link aggregation at such a high bandwidth that have to be worked out but this does not seem at all outside of current technological capabilities.
Heck I've seen the bundles of fiber that get buried along 2 lane county highways in rural Wisconsin, and this just does not sound impressive at all