RE: Powerline Ethernet

["Matthew Walker" <Matthew.Walker@xxxxxxxxxx>]

Thanks for all the feedback.
Here's a quick summary of what I've found if anyone's interested in
this.

The homeplug powerline system uses a mac routing table system with a max
64 entries per table.
This imposes a theoretical limit of 32 nodes.

I've understand the rule of thumb distance wise is around 200 meters.
This limit is really dependent on signal noise/attenuation.  Surge
protectors and the like can create a significant signal loss (in the
order of 10db due to the surge protecting capacitor).  The homeplug
units have build-in surge protection anyway so for best results they
advise deployment upstream of any surge protected 4gangs and the like.

For larger installs, there is an enterprise Multi Dwelling Unit product
from Corinex (which actually contains up to three Corinex AV200 cards).
These units can deliver broadband to 100s of users and chain together to
provide a backbone with segmentation.
The signal repeating can be time or frequency based (i'm not clear on
this yet, but the units can provide some form of artificial segmentation
by dividing up the available bandwidth into discrete frequency channels
like).
As well as working with homeplug devices over mains cabling, regular
coax can but used.

There is a link here:  www.broadbandcarrier.net/mdu.htm  (my contact is
called Peter)

Matt Walker




-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
Of Matthew Walker
Sent: 09 March 2007 10:24
To: ukha_d@xxxxxxx
Subject: [ukha_d] Powerline Ethernet



A friend of mine is looking at networking some caravans on a site in
Wales.
I've been trying to find out the limitation of powerline ethernet
devices.
In particular, how many devices can be used on the same mains circuit?
The Netgear XE104 'ethernet switch' says 'up to four' can be used, but
the diagrams show 4 devices sharing one 'switch'.
Anyone know if this means potentially 4x4 devices can share one mains
network 'segment' ?
I presume this is a single broadcast domain (maybe switched from the
wall units?).
Are there any more sophistocated solutions for powerline networking that
i'm missing.
Thanks for any feedback.
Matt Walker

[Non-text portions of this message have been removed]







[Non-text portions of this message have been removed]