At this point if you haven't deployed any of these system, make sure you know the road map of your vendor for N-GPON2 that is going to be the next wave of deployed pon systems. https://www.calix.com/solutions/next-generation-pon.html Carlos Alcantar Race Communications / Race Team Member 1325 Howard Ave. #604, Burlingame, CA. 94010 Phone: +1 415 376 3314 / carlos@race.com / http://www.race.com ________________________________________ From: NANOG <nanog-bounces@nanog.org> on behalf of Baldur Norddahl <baldur.norddahl@gmail.com> Sent: Wednesday, January 6, 2016 8:30 AM To: nanog@nanog.org Subject: Re: GPON vs. GEPON The solution for selling 1G internet with EPON could be 10GEPON. This is still cheaper than GPON. The idea is that the ONU has a cheap standard 1G transmitter. Apparently you can make a 10G receiver very cheap, it is the transmitter that is expensive. So it is 10G downstream and 1G upstream. With the option to deliver 10G upstream per ONU. It is about reusing standard ethernet components that are dirt cheap - you can buy ethernet SFP modules for peanuts after all and 10G SFP+ modules are not that expensive either. However when we asked some vendors about this, nobody wanted to sell to us because Europe (and USA I assume) is GPON while China is GEPON. They did offer to sell us GPON at 10GEPON pricing instead... Something fishy is going on. It is not about EC compliance as it is just a matter of buying a 10GEPON card instead of GPON card to the same chassis switch. Maybe patents? Regards, Baldur On 6 January 2016 at 14:57, Colton Conor <colton.conor@gmail.com> wrote:
If you take out "bitrate, split ratio, cross vendor compatibility and purchase price differences" then what else would you like to compare or know? Those would be the major differences I would say. We only deploy GPON here. I would say in a system like GEPON or GPON where a port is shared between users more bandwidth is better, and GPON has more capacity than GEPON. I am not sure which region you are in, but in the USA GEPON is almost non-existent from the larger players. Meaning that most GEPON equipment won't be ANSI certified, and might not have FFC certs.
Huawei used to have a couple of slides.
I looked on some other list and found the following:
We considered EPON, and there are some inexpensive solutions from off shore that are worth considering.
In the end, we went for GPON for two reasons:
One, you can deliver a true 1Gbps service where more than one customer on a PON segment can actually get 1Gbps at a time, because the GPON supports 2.4Gbps of total usage on the segment.
Two we like our current vendor, Adtran, and we wanted to put OLT cards into the same chassis and manage them using the same systems. The cost premium versus a new vendor for EPON wasn't huge. The CPE is the bigger cost, and we didn't see a real cost difference between EPON ONT and GPON ONT.
In the end, the price difference for GPON versus EPON wasn't great - and while GPON is a bit "designed by committee" and there are some valid criticisms there, they're academic in light of the other factors.
On Tue, Jan 5, 2016 at 3:00 PM, <nanog-isp@mail.com> wrote:
Hello all,
For those of you with optical last mile networks that are familiar with both GPON and GEPON, would you mind sharing experiences of the differences between GPON and GEPON, especially from an operative perspective?
For arguments sake let's assume bitrate, split ratio, cross vendor compatibility and purchase price differences aren't of major interest.
Thanks,
Jared