Satellites and submarine cables

Sean Donelan sean at
Fri Oct 30 17:30:04 UTC 2015

Dyn Research, Doug Madory, has a good blog post looking at the physical 
threats affecting submarine cables; as well as covering recent historical
submarine cable outages due to human action.

And also a very nice infographic by Caroline Troein, Tufts University, 
show global submarine cable vulnerable points.

Overall, Internet architecture has demonstrated resiliance to physical 
layer disruptions, but it has not proven as resliant to logical layer 

On Mon, 26 Oct 2015, Sean Donelan wrote:

> Since the weekend's list problems seem to have died down.  How about some 
> infrastructure news.
>> From Russia, Unofficial Assurance about Intent of Lurking Luch Satellite
> Russian Ships Near Data Cables Are Too Close for U.S. Comfort
> This seems to be a case of "I know you can see me, and I can see you."
> Its not new. Multiple countries have demostrated submarine and satellite 
> capabilities over the decades ... more submarines than satellites. But 
> generally everyone has more to lose than gain.  What is different is the 
> increasingly public rhetoric.
> Occasional satellites or submarine cable disruptions haven't had long term 
> impact on the US mainland due to US connectivity options. Carriers serving 
> the US mainland regularly have outages and repair submarine cable and 
> satellite problems. But countries with less connectivity options could get 
> pushed around more, along the lines of "Make him an offer he can't refuse." 
> Some of the public rhetoric may be for allies.

More information about the NANOG mailing list