100/20 fibre burst speed

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Gordy7

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# 251613 3-Jul-2019 10:05

Earlier this morning I decided to do a Windows update.

I happened to be using my Task Manager Ethernet speed monitor and saw my 100/20 fibre burst to 327Mbps download for 2 or 3 seconds - Wow.

Gordy

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# 2269078 3-Jul-2019 10:22

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"It depends" on the LFC.

Enable in Christchurch seems to have a less aggressive policer from what I found when I was testing. Was able to burst to 800+Mbit for a few seconds (Up to the first 50MB of data transferred from memory) before having the traffic being dropped on the floor. Chorus were a lot more aggressive and I think policed after 5MB.

That was why with Truenet there were people in Christchurch on Enable Fibre with certain ISPs getting "reported speeds" above 100Mbit as they didn't police/shape the traffic to prevent it being dropped for customers on the 100Mbit plan.

http://jonette.co.nz/final-truenet-report-januar.html

Hence why "technically" correct you "could" get speeds over 100Mbit / your chosen plan, it wasn't accurate as you couldn't have "sustained data rate" based on your speed.

All those reports showing over 100% speeds were never accurate.

Without a correctly configured shaper your international throughput would fall through the floor. So while you may get a slightly higher speedtest / truenet result. When it came to downloading a file further away than Australia (such as US/UK etc) it would take far longer due to packet loss and retries. Hence the experience would be significantly worse.

timmmay

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# 2269083 3-Jul-2019 10:32

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Windows updates can also come from other computers on the LAN using delivery optimisation. That could come in at gigabit speeds if you have a gigabit network.

Gordy7

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# 2269104 3-Jul-2019 11:09

timmmay:

Windows updates can also come from other computers on the LAN using delivery optimisation. That could come in at gigabit speeds if you have a gigabit network.

Thanks for that info.... never been into the delivery optimisation part of Windows Update before.... It is ON in my setup.

My network is all Gigabit.... I was updating my main PC this morning.

My 'always on' PC while it has a Gigabit Lan port has the CPU knocking 100% utilisation most of the time.

However my main PC could have fetched the update from my 'always on' PC at 327Mbps.

Out of curiosity, I will try and figure out the source of my next update for my main PC.

Gordy