Ask HN: Are you prepared for loss of multiple trans-atlantic fibre-optic cables?

Do your disaster mitigation plans have this scenario considered and, if multiple cables were disrupted such that there was no alternate routing available, what impact would it have on your services ?

Is this something we as an industry should be working together on to understand the risk and how we may be able to cooperate with each other to mitigate the risks and recover rapidly (such as pre-positioning cable repair ships at times of elevated risk) ?

As the situation in Ukraine vis-a-vis an invasion by Russia deteriorates [0] Russia has today told the Irish government it intends to conduct naval live-fire exercises February 3-8 in a small area of the Irish Exclusive Economic Zone (EEZ) 160 nautical miles (~240km) SSW, off Mizen Head [1], coincidentally where the major fibre optic cables between Europe and North America drop off the continental shelf into deep water [2].

This is the location of several major shipping routes [3] and will also cause an air exclusion zone between 0400-1400 each day.

Combined with suspected interference with similar cables off the north-west coast in August 2021 by a Russian Oceanographic Survey ship [3] there is potential for major interference or disruption to multiple cables simultaneously.

[0] https://liveuamap.com/

[1] https://www.navalnews.com/naval-news/2022/01/russian-navy-live-firing-off-irish-coast-during-tensions/

[2] https://world3dmap.com/submarine-cable-map/

[3] https://www.navalnews.com/naval-news/2021/08/russian-spy-ship-yantar-loitering-near-trans-atlantic-internet-cables/

  • What exactly would this do to the US internet? I don't intuitively understand - if I am in NYC and the server is in VA, how would a broken undersea cable impact my internet?

  • Nope. It's likely that the stock exchanges would halt trading, so there's not much we would be doing.

  • God, I wish. The biggest blessing would be to be cut off from the US internet. I dream of the balkanization of the web every week by now, and this was not the case 10 years ago.