The tech and speeds behind the ONT

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Talkiet

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#3063667 14-Apr-2023 15:00

Chorus actually make the PON port utilisation stats publicly available. They are not light reading though - 1 month of reports can top 40GB so you'll not be able to just open it in Excel.

If anyone was _really_ interested, they should be able to find out how busy their own PON port is on a 15 minute average basis. (assuming you know what PON port you are connected to)

Cheers -N

Please note all comments are from my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.

wired

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#3063705 14-Apr-2023 17:01

nztim:

mobiusnz:

Thanks for the question and the answers - This has been a really informative thread and I plan to watch the videos (or listen in the car)

My take aways from this are
A) get a business fibre plan at home - I have and it got the free bump from 100/100 to 300/300 and its a dream. Paying more for the Gigabit won't really see much benefit for the price - Does a business plan give a more guarantee'd speed??
B) Try and buy a house in an area filled with Technophobes so your neighbours are probably checking email, using facebook and watching netflix at the most.

My one question - Who sets up the speeds - Are these done on the ONT at the tenant or at the OLT or on the reseller network - I ask as I've had a few installs on Enable Fibre lately in Christchurch seeing 100 down and 300 up where its been provisioned wrong - I'm picking this is an Enable mistake not the reseller??

If you want dedicated bandwidth with absolutely no sharing, get DFAS, this is a point-to-point fiber between you and the exchange with absolutely no sharing with anyone.

or you can get Bitstream 4 which is the dedicated version of the GPON service. If you get a DFAS you need to be able to put optics at the central office end to connect it to something else which can mean leasing space so that product is really only for ISPs to use. BS4 already has those optics installed so will connect directly to your ISP.

The new variant of BS4 called “glass only” requires you to plug in your own optics as there is no ONT provided. Many RGW already have a SFP cage to do this and the optics aren’t expensive. just check the wavelengths match for each direction.

wired

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#3063712 14-Apr-2023 17:20

mobiusnz: My one question - Who sets up the speeds - Are these done on the ONT at the tenant or at the OLT or on the reseller network - I ask as I've had a few installs on Enable Fibre lately in Christchurch seeing 100 down and 300 up where its been provisioned wrong - I'm picking this is an Enable mistake not the reseller??

Both the ISP and the LFC set the speeds and they are slightly different numbers. The ISP will set the speed at the Ethernet layer 3 which is the IP address layer. They may set it to say 100 Mbps. The ISP mostly controls the downstream speed because their equipment is at their offices, but they can set the upstream speed to.

The LFC also sets their speeds and these are set at the Ethernet layer 2. As the layer 2 frames are bigger than the layer 3 packets, the LFC will set the speeds to be about 10% more, say 110 Mbps.

The LFC can control the speed at a number of places, typically at the ingress to their networks so they are not carrying traffic which they will discard further inside their networks. So that can be where they connect with the ISP for the downstream traffic and sometimes at the ONT for the upstream traffic. They can also control the speeds at the OLT for both directions.

So either provider can make a mistake with their provisioning.

Tinkerisk

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#3063715 14-Apr-2023 17:46

coffeebaron: Maybe get together with a bunch of neighbour's and see if you can overload the PON with a neighbourhood full of simultaneous speed tests :)

Hehe, we actually did this (unintentionally) in the home office during COVID19 and it very quickly turned out that the providers had completely "overbooked" the lines. The consequence was that virtually overnight the modules in the street distributors were hastily exchanged for faster ones and more backbones were laid when what had always been suspected then suddenly emerged as confirmed.

So much for the "monetary" fairness of statistical technical distribution.

The consequence of the regulatory authority, however, was that the providers were ordered by law to ensure that the promised internet speeds could only be undercut in very rare exceptional cases, otherwise the customer would get money back with proof of protocol. An average contracted 100M/40M low end plan now actually has ~113M/52M compared to earlier ~80M/35M, which then dropped sharply again during quarantine periods.

Qui nihil scit, omnia credere debet.
Firewalls do NOT stop dragons.
In effect we have everything to hide from someone, and no idea who someone is.

myfullflavour

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#3063752 14-Apr-2023 19:59

If you’re worried about getting slowed down, order hyper fibre, get it installed then change back to a normal UFB plan. Your normal UFB plan will continue to be delivered by the hyperfibre ONT with 10Gbps link back to Chorus land :)

cyril7

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#3074391 10-May-2023 07:10

Hi, just a quick question which I will pass by our RSP involved shortly, but am keen to get Bretts, @BMarquis comment on.

I have a client that has a 2nd offering on a type200 GPON ONT at a commercial property, the operator of that property has the 1st offering.

The operator of the property has just advised they are upgrading to HyperFibre in mid July.

As mentioned I will discuss this with our RSP, but keen to know, can the HyperFibre ONT provide a 2nd GPON offering while the 1st offering is XGPON, or will the type200 need to remain for our circuit.

thaks in advance, Cyril