nanog mailing list archives

Re: modeling residential subscriber bandwidth demand


From: Paul Nash <paul () nashnetworks ca>
Date: Tue, 2 Apr 2019 17:49:21 -0400

Mixed residential (ages 25 - 75, 1 - 6 people per unit), group who worked together to keep costs down.  Works well for 
them.  Friday nights we get to about 85% utilization (Netflix), other than that, usually sits between 25 - 45%

        paul

On Apr 2, 2019, at 5:44 PM, Jared Mauch <jared () puck nether net> wrote:

I would say this is perhaps atypical but may depend on the customer type(s).

If they’re residential and use OTT data then sure.  If it’s SMB you’re likely in better shape.

- Jared


On Apr 2, 2019, at 5:21 PM, Paul Nash <paul () nashnetworks ca> wrote:

FWIW, I have a 250 subscribers sitting on a 100M fiber into Torix.  I have had no complains about speed in 4 1/2 
years.  I have been planning to bump them to 1G for the last 4 years, but there is currently no economic 
justification.

     paul


On Apr 2, 2019, at 3:21 PM, Louie Lee via NANOG <nanog () nanog org> wrote:

Certainly.

Projecting demand is one thing. Figuring out what to buy for your backbone, edge (uplink & peer), and colo (for CDN 
caches too!), for which scale+growth is quite another.

And yeah, Jim, overall, things have stayed the same. There are just the nuances added with caches, gaming, OTT 
streaming, some IoT (like always-on home security cams) plus better tools now for network management and network 
analysis.

Louie
Google Fiber.



On Tue, Apr 2, 2019 at 12:00 PM Jared Mauch <jared () puck nether net> wrote:


On Apr 2, 2019, at 2:35 PM, jim deleskie <deleskie () gmail com> wrote:

+1 on this. its been more than 10 years since I've been responsible for a broadband network but have friends that 
still play in that world and do some very good work on making sure their models are very well managed, with more 
math than I ever bothered with, That being said, If had used the methods I'd had used back in the 90's they would 
have fully predicted per sub growth including all the FB/YoutubeNetflix traffic we have today. The "rapid" growth 
we say in the 90's and the 2000' and even this decade are all magically the same curve, we'd just further up the 
incline, the question is will it continue another 10+ years, where the growth rate is nearing straight up :)


I think sometimes folks have the challenge with how to deal with aggregate scale and growth vs what happens in a 
pure linear model with subscribers.

The first 75 users look a lot different than the next 900.  You get different population scale and average usage.

I could roughly estimate some high numbers for population of earth internet usage at peak for maximum, but in most 
cases if you have a 1G connection you can support 500-800 subscribers these days.  Ideally you can get a 10G link 
for a reasonable price.  Your scale looks different as well as you can work with “the content guys” once you get 
far enough.

Thursdays are still the peak because date night is still generally Friday.

- Jared



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