Yeah, you're talking at full saturation for each user though. If you look at his graphs of user usage (and others), it comes in spikes. If you design around a 1x16 split, you're ending up with ~155Mbps per user at max saturation on standard 2.5Gbps pon. When you transition that to NG-PON2, that's 625Mbps per user at max saturation (10Gbps mode), or 2.5Gbps per user at max saturation (40Gbps mode).
On Fri, Feb 12, 2016 at 11:14 PM, George Skorup <geo...@cbcast.com> wrote: > I think Chuck Hogg said he's doing 4:1's near customers and feeding those > with 8:1's at the cabinet. 4:1 means you can deliver 600Mbps to each > customer if you eventually back off the cabinet splitter to zero. That's > more than enough bandwidth for a typical customer. If you have any > businesses, give them a dedicated strand and do BiDi AE. > > We're in the cost analysis stage for a project and it *will* be GPON. It's a > remote area and 300+ ports of active would be ridiculous and way, way > overkill. > > On 2/12/2016 9:47 PM, Josh Reynolds wrote: >> >> If you're doing a super small project, no more than a hundred or two >> hundred customers in an area, then it can make sense. There comes to >> be a point where the port cost of active does NOT scale. >> >> 1024 subs on GPON with a modest 32 way split is done with 32 GPON >> SFPs, 32 ports, 32 way split per GPON SFP. 2 line cards in a 2U >> chassis. >> >> On active, that's 1024 active ports and SFPs. That's insane. >> >> On Fri, Feb 12, 2016 at 9:44 PM, Chris Fabien <ch...@lakenetmi.com> wrote: >>> >>> I am also a proponent of active. Especially for small projects like >>> this. >>> Very low cost of entry. >>> >>> We looked at gpon including Alphion and ended up with still needing all >>> the >>> strands home run to the cabinet to fully load up each PON or we ended up >>> with a bunch of money wasted on PONs that would never be fully utilized >>> if >>> we did splitting closer to the customer. >>> >>> On Feb 12, 2016 10:30 PM, "Andreas Wiatowski" <andr...@silowireless.com> >>> wrote: >>>> >>>> So, I understand the benefits of GPon ... What brand would you >>>> consider? >>>> ... I have been looking at Alphion. Huawei seems like a good option... >>>> But >>>> much more expensive. >>>> >>>> >>>> >>>> Cheers, >>>> >>>> ______________________________ >>>> >>>> Andreas Wiatowski | CEO >>>> >>>> Silo Wireless Inc. >>>> >>>> Email andr...@silowireless.com >>>> >>>> 19 Sage Court >>>> >>>> Brantford, Ontario N3R 7T4 (CANADA) >>>> >>>> Tel +1.519.449.5656 Extension-600|Fax +1.519.449.5536 |Toll Free >>>> +1.866.727.4138 >>>> >>>> -------- Original message -------- >>>> From: Josh Reynolds <j...@kyneticwifi.com> >>>> Date: 2016-02-12 10:21 PM (GMT-05:00) >>>> To: af@afmug.com >>>> Subject: Re: [AFMUG] Active or GPon? >>>> >>>> You realize the transport core to the gpon OLT chassis is still active >>>> fiber in many designs, right? I also am unsure if you are aware of the >>>> upgrade process to NG-PON2 - you can run it on the same fiber strand as >>>> your >>>> existing PON split. Add the new card into the chassis and move the split >>>> over to the new SFP. Upgrade the customers at your leisure. >>>> >>>> On Feb 12, 2016 9:13 PM, "Eric Kuhnke" <eric.kuh...@gmail.com> wrote: >>>>> >>>>> Key part there is, is going to be... is it available or shipping now? >>>>> If somebody wants to start a build now, the choice is between GPON or >>>>> active. >>>>> >>>>> Having an active fiber path, even with just one strand (for BiDi >>>>> optics) >>>>> gives you a nearly infinite lifespan of the installed light path and >>>>> cable >>>>> plant, if things are maintained correctly. With a dedicated light path >>>>> from >>>>> each powered network node to the customer you could upgrade to active-E >>>>> 10, >>>>> then 40, then 100Gbps someday. Yes we will see customers with 10GbE >>>>> optics >>>>> in the next ten years. And maybe in 20 or 30 years from now it'll be >>>>> cheap >>>>> and easy to connect each customer with an SFP-sized coherent QPSK >>>>> 100GbE >>>>> optic at each end. >>>>> >>>>> On Fri, Feb 12, 2016 at 7:08 PM, Josh Reynolds <j...@kyneticwifi.com> >>>>> wrote: >>>>>> >>>>>> 10-40Gbps on NG-PON2 is going to be the real deal, and betting against >>>>>> it vs active ethernet at scale for residential service is just... >>>>>> dumb, to be honest (IMO). >>>>>> >>>>>> The size of your backbone ends up being monstrous with active, as well >>>>>> as having to keep the cabinets powered, UPS+batteries, enclosurers >>>>>> maintained, etc. PON is simply so much cheaper are scale, and in >>>>>> residential every dollar counts. >>>>>> >>>>>> On Fri, Feb 12, 2016 at 8:56 PM, Eric Kuhnke <eric.kuh...@gmail.com> >>>>>> wrote: >>>>>>> >>>>>>> I did forget to mention that I'm firmly on the side of activeE being >>>>>>> the >>>>>>> best choice, for one big reason... You can use all kinds of >>>>>>> SFP-based >>>>>>> equipment (24/48-port 1U switches) or chassis based switches and >>>>>>> routers >>>>>>> with 24/48-port blades from a huge variety of manufacturers. >>>>>>> >>>>>>> There's a lot of 48-port SFP stuff out there on the grey/refurb/used >>>>>>> market >>>>>>> that came out of datacenters, and no longer meets the bandwidth needs >>>>>>> for >>>>>>> people who are doing 10GbE (or 2x10GbE) to each bare metal >>>>>>> hypervisor. >>>>>>> But >>>>>>> that same equipment is perfect for activeE. >>>>>>> >>>>>>> Same idea as a Cisco 3750G-48 is no longer enough bandwidth for >>>>>>> 1000BaseT to >>>>>>> the server in colo environments, but is perfect for MDU use. >>>>>>> >>>>>>> >>>>>>> GPON/EPON/whateverPON is all a mess of manufacturer proprietary CPEs >>>>>>> and >>>>>>> non-interoperable stuff. Whereas with activeE and a real ethernet >>>>>>> port >>>>>>> for >>>>>>> each customer you can use $30 media converters as your demarc. >>>>>>> >>>>>>> >>>>>>> On Fri, Feb 12, 2016 at 4:53 PM, Andreas Wiatowski >>>>>>> <andr...@silowireless.com> wrote: >>>>>>>> >>>>>>>> Hi all, >>>>>>>> >>>>>>>> Looking to do my first ftth for about 110 homes. >>>>>>>> If I do active, what switch platform would you use for sfp in >>>>>>>> cabinet and >>>>>>>> in home router/cabinet. >>>>>>>> >>>>>>>> If GPon, what vendor would you choose that is cost >>>>>>>> effective/reliable >>>>>>>> >>>>>>>> I understand the full limitations of GPon.. But I feel it is an >>>>>>>> attractive >>>>>>>> proposition compared to active... And the few systems I have seen >>>>>>>> have a >>>>>>>> road map to faster olt access. >>>>>>>> >>>>>>>> Cheers, >>>>>>>> >>>>>>>> ______________________________ >>>>>>>> >>>>>>>> Andreas Wiatowski | CEO >>>>>>>> >>>>>>>> Silo Wireless Inc. >>>>>>>> >>>>>>>> Email andr...@silowireless.com >>>>>>>> >>>>>>>> 19 Sage Court >>>>>>>> >>>>>>>> Brantford, Ontario N3R 7T4 (CANADA) >>>>>>>> >>>>>>>> Tel +1.519.449.5656 Extension-600|Fax +1.519.449.5536 |Toll Free >>>>>>>> +1.866.727.4138 >>>>>>> >>>>>>> >>>>> >
