GPON vs. GEPON

Baldur Norddahl baldur.norddahl at gmail.com
Sat Jan 9 08:33:27 UTC 2016


On 9 January 2016 at 07:45, Josh Reynolds <josh at kyneticwifi.com> wrote:

> You might be surprised...
>
>
>
It is hard to be surprised when you have hard numbers. I run a network and
unsurprisingly know exactly how much traffic my users cause. That number is
currently about 2 Mbit/s peak aggregated per household. Do you need 100
Gbit/s instead of 40 Gbit/s? Yes you do if you carry traffic from more than
20,000 users or perhaps you have 10,000 users but want to plan for expected
traffic increase over the next two years.

But nobody plans their backbone so it can carry 20-30 Mbit/s aggregated per
household. Well if you do, you have no competition, because otherwise
someone else will figure out how to run a network at 1/10 the cost of what
you do, and you will go out of business.

Before someone points out the obvious: That math does not carry over to
GPON OLT planning (too few users for the aggregation). You will have higher
peak than 64x 2 Mbit/s on your OLT. But still, 2.4 Gbit/s shared among 64
users is currently more than sufficient that nobody is going to see any
limits on their download rate, even during peak. And that is with users on
1000 Mbit/s plans.

I have no idea what Google did or why. I have a feeling that my own hard
earned experiences overrides any hear say on that matter... Of course what
I am telling you might also be hear say (although directly from a primary
source) so do what you think is best. I am just sharing our experiences in
the spirit of this forum.

Regards,

Baldur



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