nanog mailing list archives
Re: Last Mile Design
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sat, 9 Feb 2019 21:13:17 +0100
GPON is 2.4 Gbps downstream and 1.2 Gbps upstream. Residential users are download heavy and more than 1:2. However there is a big difference between average, peak and micro burst. The conclusion is not simple. We typically have 60+ users on each port. We sell 1000/1000 internet. And yet we only get good ratings for the speed. I find that many, that are sceptical about the shared bandwidth of GPON, forget that a typical POP might only be fed by a 10 Gbps uplink. Usually this has much lower bandwidth per user than the GPON link. Regards Baldur lør. 9. feb. 2019 20.52 skrev Grant Taylor via NANOG <nanog () nanog org>:
On 2/9/19 12:12 PM, Miles Fidelman wrote:With early PON designs, upstream bandwidth was horrible. Not particularly useful if you're doing things like remote backup, or video chatting, or running a server (business grade service). GPON does better on upstream bandwidth, but it's still asymmetric.Intriguing. I would have not considered my municipal GPON to be asymmetric. Well, not as such. Routinely, when I do speed tests I get better upstream speeds than I do downstream speeds. (More below.)If you're marketing to business customers, or home office professionals, of families with multiple users that consume upstream bandwidth, AE gives you a lot of room for upside growth (assuming you provision the right kinds of fiber).Are you referring to the dedicated bandwidth between the CPU and the AE equipment? Or the fact that bandwidth feeding the GPON and all subscribers is aggregate? I have attributed the asymmetry in my speed tests to be that most people on my GPON are predominantly downloading, thus consuming aggregate download bandwidth. Conversely, few are uploading more than requests, thus using relatively little of the aggregate upload bandwidth. Do I see asymmetry? Yes. Is it truly asymmetric? I don't think so. I think is just based on consumption of aggregate bandwidth. I have no idea if this is normal for GPON or not. Hence one of the reasons that I'm finding this thread enlightening. -- Grant. . . . unix || die
Current thread:
- Re: Last Mile Design, (continued)
- Re: Last Mile Design Fletcher Kittredge (Feb 13)
- Re: Last Mile Design Brandon Butterworth (Feb 10)
- Re: Last Mile Design [American Operators] Fletcher Kittredge (Feb 13)
- Re: Last Mile Design Mark Tinka (Feb 10)
- Re: Last Mile Design Mark Tinka (Feb 09)
- Re: Last Mile Design Sander Steffann (Feb 09)
- Re: Last Mile Design Clayton Zekelman (Feb 09)
- Re: Last Mile Design Grant Taylor via NANOG (Feb 09)
- Re: Last Mile Design Miles Fidelman (Feb 09)
- Re: Last Mile Design Grant Taylor via NANOG (Feb 09)
- Re: Last Mile Design Baldur Norddahl (Feb 09)
- Re: Last Mile Design Grant Taylor via NANOG (Feb 09)
- Re: Last Mile Design Miles Fidelman (Feb 09)
- Re: Last Mile Design Mark Tinka (Feb 09)
- RE: Last Mile Design Tony Wicks (Feb 09)