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Forum Discussion
2 networks on the same PLC home installation
Hello For security reasons I am planing to build 2 PLC networks in my home installation. I have seen that we can built 2 networks (A and B) wit PLC adaptaters using differents keys on the netwo...
PLC is for networking on the electrical network
The project stands for having TWO Network on the electrical network.
+ The first is for the wifi "guest network" without security
+ The secund is for the familly PCs networks
with restrictions for the the children...
I need (if possible) the access on the two networks on 4 places in the house..
Is this un little more clear ?
Thanks in advance for your help.
Powerline Communication (PLC) or Powerline for short, does share a lot with Ethernet on thick yellow cables from the late 1970ties, or on he early 1980ties thin wire Ethernet aka. cheapernet : It's a network operating on the physically same media, with moderate encrypted data in the PLC devices allowing to create logical connections between the PLC and the attached Ethernet.
Said this: Yes, you can operate two or more PLC networks on the same AC power installation. Keep in mind everything happens on the very same physical links, your AC lines in the house or on your property. Troublesome can be different PLC technologies, where some are known to be non-interoperable on the same wires:.
- IEEE-1901-FFT , resulting from the manufacturer standard HomePlug AV, used as modulation OFDM with fast Fourier transformation
- IEEE-1901 wavelet , derived from the manufacturer standard HD-PLC, particularly widespread in Asia, used as modulation OFDM based on wavelets
- ITU G.hn , a manufacturer-independent standard, also uses OFDM with fast Fourier transformation as modulation.
IEEE-1901-FFT and IEEE-1901-wavelet use a very similar MAC frame format that is initiated with a beacon and essentially differ in the modulation used and the QoS gradations (4 vs. 8). ITU G.hn, on the other hand, uses largely the same modulation methods as IEEE-1901-FFT, but has a MAC frame format that does not require a beacon and instead uses a map (figure) communicated in the previous frame, in which the structure of the following Mac -The framework is communicated to all receiving stations. The three standards are therefore incompatible with each other and cannot exchange data with each other. This is particularly confusing for users of power network adapters when a manufacturer offers devices with different standards that have an externally similar design but are not compatible with each other, such as the devices in the dLAN series from Devolo, which are based on IEEE-1901-FFT and the MAGIC 2 series devices from the same manufacturer, which are based on ITU G.hn.
Some similarities are carried forward to fiber communication using different colors - here however the different frequencies don't interfere or slow down other connections.