First, I suggest you read the last 12 words of my post rather than reacting to your own interpretation of my comment as a personal dig at you.
Second, Ethernel over Power sharing is only up to the first circuit breaker, whislt WiFi sharing is only limited by metal surfaces, walls and distance.
This means that in some situations (for example appartments in appartment buildings) EoP “sharing” is entirelly dependent on what devices a person puts on the same electrical network (i.e. the power line branch sharing the same circuit breaker) whilst WiFi is a complete total hellhole of everybody screwing everybody else.
Further, people sometimes rent the place they live in, not own it and getting permission to run wire along the walls might be impossible whilst investing in improving the landlord’s property by having wire run within the existing paths inside the wall (usually shared with power wire) is usually not exactly smart.
So Ethernet Over Power is a possible solution that should be considered in light of the situation and used if appropriate or discarded if not.
Looking at and evaluating the various solutions in light of the context is the Engineering approach to solving problems, so it makes sense to present a possible solution in a public forum when one’s intention is to help others.
A self-centred “it’s not good in my situation hence it’s shit and anybody who says otherwise is insulting me” take does nothing to help others.
My original comment was about how slow Ethernet over power was and you claimed that only matters if your internet is faster. There are lots of situations where you’d run cable where that statement isn’t true. If you had said “sure it’s slower but it still works sometimes” that’s a wildly different statement than the equivalent of “speed only matters if it’s the bottleneck to the internet”
Power line adapters are usually fairly separated by different circuits, but that’s far from a hard limit. Just because there’s not a reliable connection between two circuits doesn’t mean the medium isn’t shared and interference can’t happen - it is very much like wifi through a cement wall or two.
In no way am I personally offended, I just used some sarcasm to show how inane that original statement is; and those kind of statements are everywhere in networking discussions.
There is indeed as you pointed out the problem that the bandwith is shared between devices on the same electric circuit when using Ethernet Over Power but not with Point To Point Ethernet connections (which are all of them nowadays, though in the old days shared topologies were more common).
I can see how if you have devices on you network communicating with each other and using lots of bandwidth doing so, the bottleneck wouln’t at all be the internet connection.
That said, point to point ethernet connections to a central router might not be the greatest solution if your running your own mini server farm from you a location away from the main router, unless you want bundles of cables along your walls. Ultimatelly keeping those things together and pulling a single cable from the main router to a secondary router that then connects point to point to all those machines, might be a better option.
And no, EoP doesn’t leak in any way significantly across high inductances or transformers which have been designed to work with home electrics (i.e. for a frequency of 50/60Hz) simply because the inductors filter out the higher frequencies that are necessary to be able to transfer data at MBit/s speeds - this isn’t a “networking” thing, it’s Physics (and basic Electronics).
Even if the EoP protocol using is using multiple channels at multiple frequencies, the lower frequencies that might leak between your and your neighbours’ electric circuits if both are using those adaptors, and could thus have too low a Signal-Noise ratio to be useable, are a tiny fraction of the total bandwith because those low frequencies which can transverse the inductors without being too dampened cannot encode and carry all that much data (it relates to the Nyquist Theorem), so you would loose a tiny fraction of the total bandwidth (I would be surprised if even a 1MHz signal can cross an Electric Meter without being attenuated to near non-existence).
Even the radio waves emitted by your wires whilst carrying that data will at worst induce tiny amounts of electric noise in your neighbours wires (and vice-versa) as neither are designed as antennas for those frequencies. We’re talking sub-1% levels of electrical noise due to electromagnetic interference here.
If your house is right next to your neighbours’ (such as in an appartment building), unless yours and your neighbour’s electric circuits both sit behind the same Electric Meter (i.e. you share payment) and hence there is nothing but two simple circuit breakers or fuses between both electric circuits, the level of EoP interference between both will be at least one order of magnitude lower (probably much more) than the level of WiFi interference if only because of the coil in the Meter along with the natural resistance of the circuit acts as an LP filter with quite a low cut-off point thus attenuating almost all of the signal, and if you sit behind different mains transformers the signal going across will be so low as to not even be measurable.
It’s not by chance that other posters were complaining that EoP did not work between devices in two different parts of the house, and that’s merely them being in different electric circuits separated by simple circuit breakers.
First, I suggest you read the last 12 words of my post rather than reacting to your own interpretation of my comment as a personal dig at you.
Second, Ethernel over Power sharing is only up to the first circuit breaker, whislt WiFi sharing is only limited by metal surfaces, walls and distance.
This means that in some situations (for example appartments in appartment buildings) EoP “sharing” is entirelly dependent on what devices a person puts on the same electrical network (i.e. the power line branch sharing the same circuit breaker) whilst WiFi is a complete total hellhole of everybody screwing everybody else.
Further, people sometimes rent the place they live in, not own it and getting permission to run wire along the walls might be impossible whilst investing in improving the landlord’s property by having wire run within the existing paths inside the wall (usually shared with power wire) is usually not exactly smart.
So Ethernet Over Power is a possible solution that should be considered in light of the situation and used if appropriate or discarded if not.
Looking at and evaluating the various solutions in light of the context is the Engineering approach to solving problems, so it makes sense to present a possible solution in a public forum when one’s intention is to help others.
A self-centred “it’s not good in my situation hence it’s shit and anybody who says otherwise is insulting me” take does nothing to help others.
My original comment was about how slow Ethernet over power was and you claimed that only matters if your internet is faster. There are lots of situations where you’d run cable where that statement isn’t true. If you had said “sure it’s slower but it still works sometimes” that’s a wildly different statement than the equivalent of “speed only matters if it’s the bottleneck to the internet”
Power line adapters are usually fairly separated by different circuits, but that’s far from a hard limit. Just because there’s not a reliable connection between two circuits doesn’t mean the medium isn’t shared and interference can’t happen - it is very much like wifi through a cement wall or two.
In no way am I personally offended, I just used some sarcasm to show how inane that original statement is; and those kind of statements are everywhere in networking discussions.
Yeah ok, I see what you mean.
There is indeed as you pointed out the problem that the bandwith is shared between devices on the same electric circuit when using Ethernet Over Power but not with Point To Point Ethernet connections (which are all of them nowadays, though in the old days shared topologies were more common).
I can see how if you have devices on you network communicating with each other and using lots of bandwidth doing so, the bottleneck wouln’t at all be the internet connection.
That said, point to point ethernet connections to a central router might not be the greatest solution if your running your own mini server farm from you a location away from the main router, unless you want bundles of cables along your walls. Ultimatelly keeping those things together and pulling a single cable from the main router to a secondary router that then connects point to point to all those machines, might be a better option.
And no, EoP doesn’t leak in any way significantly across high inductances or transformers which have been designed to work with home electrics (i.e. for a frequency of 50/60Hz) simply because the inductors filter out the higher frequencies that are necessary to be able to transfer data at MBit/s speeds - this isn’t a “networking” thing, it’s Physics (and basic Electronics).
Even if the EoP protocol using is using multiple channels at multiple frequencies, the lower frequencies that might leak between your and your neighbours’ electric circuits if both are using those adaptors, and could thus have too low a Signal-Noise ratio to be useable, are a tiny fraction of the total bandwith because those low frequencies which can transverse the inductors without being too dampened cannot encode and carry all that much data (it relates to the Nyquist Theorem), so you would loose a tiny fraction of the total bandwidth (I would be surprised if even a 1MHz signal can cross an Electric Meter without being attenuated to near non-existence).
Even the radio waves emitted by your wires whilst carrying that data will at worst induce tiny amounts of electric noise in your neighbours wires (and vice-versa) as neither are designed as antennas for those frequencies. We’re talking sub-1% levels of electrical noise due to electromagnetic interference here.
If your house is right next to your neighbours’ (such as in an appartment building), unless yours and your neighbour’s electric circuits both sit behind the same Electric Meter (i.e. you share payment) and hence there is nothing but two simple circuit breakers or fuses between both electric circuits, the level of EoP interference between both will be at least one order of magnitude lower (probably much more) than the level of WiFi interference if only because of the coil in the Meter along with the natural resistance of the circuit acts as an LP filter with quite a low cut-off point thus attenuating almost all of the signal, and if you sit behind different mains transformers the signal going across will be so low as to not even be measurable.
It’s not by chance that other posters were complaining that EoP did not work between devices in two different parts of the house, and that’s merely them being in different electric circuits separated by simple circuit breakers.