10 gigabit Ethernet 80 GHz point-to-point bridges
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Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#2• Secure communication due inability to intercept the laser-like beam transmission at free air
I would not trust that as a security layer.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#3Ooh, I really want two of these. I'm stuck on an island with poor last mile service providers. But, I have line of sight to a number of spots with good quality fiber.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#4What kind of licensing (FCC or otherwise) would one need to operate such a radio bridge in the US? or is it public spectrum?
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#5What kind of licensing (FCC or otherwise) would one need to operate such a radio bridge in the US? or is it public spectrum?
80 GHz is "light licensed" in the US, the paperwork requirements are not onerous. It's less costly and complicated than a regular part 101 licensed microwave link.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#6I have line of sight to the building where I work, I would love something like this so I could get gigabit internet at home w/o paying through the nose :)
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#7This would get really bad rain fade at 80GHz or even on a humid day the speed would back off a lot. You need to run a lower frequency backup link in parallel.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#8• Secure communication due inability to intercept the laser-like beam transmission at free air I would not trust that as a security layer.
It's definitely not something to trust in, but intercepting (at a layer 1 level) a PTP 80 GHz link is actually harder than tapping fiber. You'd have to have Rx equipment either directly in the path or directly behind both ends of the radio link.
As compared to the effort required to cut an aerial or underground singlemode cable and fusion splice in place a passive prism split tap (basically the same thing as inserting a split in a GPON FTTH network). A practiced outside plant fiber crew of 2 persons and a bucket truck could do this with less than 5 minutes of downtime on a router-to-router optical interface, short enough time to clear any NMS alerts and prevent a repair team truck roll. Assuming we're talking about only two strands.
Either way actual security is accomplished through standard based crypto, not obfuscation or preventing people from messing with the layer-1.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#9This would get really bad rain fade at 80GHz or even on a humid day the speed would back off a lot. You need to run a lower frequency backup link in parallel.
That's the nature of 80 GHz, design the links for your climate and don't try to go more than 2-3km. You can achieve five nines. And yes, run a 5.x GHz backup path in parallel.
Re: 10 gigabit Ethernet 80 GHz point-to-point bridges
#10The word "Ethernet" in the title is misleading. That word does not appear in TFA, which appears to discuss a radio transceiver.
[EDIT:] I stand corrected; thanks!