Re: Upstream bandwidth usage

[Matthew Crocker <matthew () corp crocker com>]

GPON is TDM (Time Division Multiplexing).  The downstream is essentially OC-48 (2.4Gbps).   The OLT sets the clock and 
each ONT has a specific timeslot for uploading.  Some vendors can adjust the timeslot reservations to ‘guarantee’ 
specific upload speeds to specific ONTs

From: NANOG <nanog-bounces+matthew=corp.crocker.com () nanog org> on behalf of Mel Beckman <mel () beckman org>
Date: Thursday, June 9, 2022 at 7:31 PM
To: Adam Thompson <athompson () merlin mb ca>
Cc: nanog () nanog org <nanog () nanog org>
Subject: Re: Upstream bandwidth usage
CAUTION: This email originated from outside of Crocker. Do not click links or open attachments unless you recognize the 
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Adam,

Your point on asymmetrical technologies is excellent. But you may not be aware that residential optical fiber is also 
asymmetrical. For example, GPON, the latest ITU specified PON standard, and the most widely deployed, calls for a 2.4 
Gbps downstream and a 1.25 Gbps upstream optical line rate.

 -mel

> On Jun 9, 2022, at 3:08 PM, Adam Thompson <athompson () merlin mb ca> wrote:
> However, if you're talking about fiber service, it's pretty much pure marketing-dept-driven BS, combined with some 
> vague justification of not letting TOR nodes or copyright-ignoring seeders/Warez-providers/etc. overwhelm the network 
> in unexpected ways.