Comment Been there, done that (Score 4, Informative) 294
I live in eastern PA (Lehigh Valley Area) and was on the local trial of BPL.
Our power company, PPL, built up a network about a year ago that promised BPL at 1.5mbps symmetric for everyone. I actually got in on the first trials of the service... and it simply sucked. Firstly and foremostly, the speeds NEVER got ANYWHERE near 1.5mbps... in either direction... at any time of day. About half of the system was based on 802.11x wireless, which is what got the signal from the medium voltage lines (the ones that feed the transformers that get the power down to 110v) to the homes. This was done because otherwise, they would need a device to jump over every transformer, since the signal for BPL doesn't survive otherwise. So, as I was wardriving, I noticed a VERY big bunch of PPLBroadbandxxxxxx APs in the area, which I suspect caused part of the problem: too much signal, not enough bandwidth.
Other things I noticed (but were logical design decisions made by the system builders, not inherent limitations in the technology) include:
- Throttling of ICMP, which totally screwed with any traceroute or ping measurement when troubleshooting
- Use of unroutable IP space for end customers
- Authentication of end users not by the BPL modem's MAC (like cable modems work), but by the MAC of the first device behind it... a real headache for those of use switching out devices on a regular basis
All in all, BPL is one of those things that sounds good on paper, but is absolutely abysmal in practice. If I were to put my money on a future last-mile broadband technology, it would have to be DSL (newer DSL variations allow much greater distances from CO to demarc) or long-range wireless (WiMAX, low orbit satellite, 4G cellular, etc).
Just for the record, about a month ago, PPL gave up, took down all of their equipment and went home. I suspect it's being used down in Texas about now ;-).
Our power company, PPL, built up a network about a year ago that promised BPL at 1.5mbps symmetric for everyone. I actually got in on the first trials of the service... and it simply sucked. Firstly and foremostly, the speeds NEVER got ANYWHERE near 1.5mbps... in either direction... at any time of day. About half of the system was based on 802.11x wireless, which is what got the signal from the medium voltage lines (the ones that feed the transformers that get the power down to 110v) to the homes. This was done because otherwise, they would need a device to jump over every transformer, since the signal for BPL doesn't survive otherwise. So, as I was wardriving, I noticed a VERY big bunch of PPLBroadbandxxxxxx APs in the area, which I suspect caused part of the problem: too much signal, not enough bandwidth.
Other things I noticed (but were logical design decisions made by the system builders, not inherent limitations in the technology) include:
- Throttling of ICMP, which totally screwed with any traceroute or ping measurement when troubleshooting
- Use of unroutable IP space for end customers
- Authentication of end users not by the BPL modem's MAC (like cable modems work), but by the MAC of the first device behind it... a real headache for those of use switching out devices on a regular basis
All in all, BPL is one of those things that sounds good on paper, but is absolutely abysmal in practice. If I were to put my money on a future last-mile broadband technology, it would have to be DSL (newer DSL variations allow much greater distances from CO to demarc) or long-range wireless (WiMAX, low orbit satellite, 4G cellular, etc).
Just for the record, about a month ago, PPL gave up, took down all of their equipment and went home. I suspect it's being used down in Texas about now
