topic Re: New install - how long until I see a stable speed? in Full Fibre

New install - how long until I see a stable speed?

presterjohn — Thu, 08 Jun 2023 08:39:28 GMT

Hello

I had a FTTP 500 installed on Monday.
Install has been flawless, but speeds are slightly below the minimum expectations of 275.
I have tried wired via the plusnet router and also my existing Fritz Box.

BT and Ookla tests both show similar results, but I'm curious if it's too early to raise an issue?

Re: New install - how long until I see a stable speed?

bill888 — Thu, 08 Jun 2023 12:30:35 GMT

Could you post your actual wired speed test results from ookla?

I presume you also tried choosing different ookla server with no improvement?

What service did you have prior to upgrading to full fibre 500 ?

Re: New install - how long until I see a stable speed?

MisterW — Thu, 08 Jun 2023 13:24:43 GMT

How long until I see a stable speed?

FTTP doesnt have any 'training/stabilisation' period. It should go at the provisioned speed immediately.

Re: New install - how long until I see a stable speed?

presterjohn — Thu, 08 Jun 2023 18:18:44 GMT

Thank you for the replies - everything appears okay when I use Windows. Unsure why I'm having issues on Linux, but I guess that isn't an issue for this forum!

Re: New install - how long until I see a stable speed?

MisterW — Thu, 08 Jun 2023 18:32:46 GMT

Unsure why I'm having issues on Linux, but I guess that isn't an issue for this forum!

Why not? We're a versatile lot round here.

I've seen issues with speedtests using Firefox on Linux ( ubuntu ) on my 900Mb connection. I'm sure there was a setting I tweaked to sort it. First download the speedtest cli version to confirm that it's a browser problem.

https://www.speedtest.net/apps/cli

Re: New install - how long until I see a stable speed?

presterjohn — Fri, 09 Jun 2023 13:37:22 GMT

I'm not entirely sure if this is classed as a "fix", but I can walk through my issue and how I have resolved it. Perhaps it'll help someone in the future.

I have been using my FritzBox 7490 since my FTTP was installed. This was mainly for an easy switchover and it has been a reliable device over the years.

I first noticed something was up when I started looking at my Pihole logs.
There appears to be a level of ipv4 incompatibility between my FritzBox and my Ubuntu box. This issue didn't exist when the FritzBox was in DSL mode, but since switching over I have noticed loads of issues with my resolv.conf, causing intermittent issues on the Ubuntu machine and completely cutting off any docker containers from the internet (host and bridge both the same).

Out of curiosity, I plugged in the Hub Two and all my issues are gone.

I'm fairly sure there will be some way of fully solving the issue, but everything is working at full speed with the Hub Two

Re: New install - how long until I see a stable speed?

MisterW — Fri, 09 Jun 2023 13:58:39 GMT

Strange!

As a matter of interest , what DNS server(s) is the Fritzbox set to issue to DHCP clients ?

By default the Hub 2 will issue itself as a cacheing DNS server and then forward on to Plusnet's DNS

but then again, I can't why a Linux client would be different to Windows , assuming both set to DHCP ?

Re: New install - how long until I see a stable speed?

presterjohn — Fri, 09 Jun 2023 14:46:53 GMT

FritzBox was using the IP address of my PiHole, running in a container on my Ubuntu box for DNS.
I set this back to the default when I noticed the issue, but it didn't resolve anything for me.
I messed around with the DHCP settings but it still wouldn't change the outcome.

Re: New install - how long until I see a stable speed?

bill888 — Fri, 09 Jun 2023 15:10:03 GMT

fwiw, I just looked up the specs of the Fritzbox 7490

https://deviwiki.com/wiki/AVM_FRITZ!Box_7490

It dates back to 2013 ! It uses similar Lantiq 500 MHz MIPS based SoC as 2013 Home Hub 5/Plusnet Hub One.

imho, It may simply be too slow to be able to operate at Full Fibre 500 speeds.....

Re: New install - how long until I see a stable speed?

MisterW — Fri, 09 Jun 2023 15:08:17 GMT

You can change the DNS server settings on the Hub 2, so you could try using the Pihole again if you wished.

I'm at a bit of a loss to see why the Fritzbox should be any different from a Lan IPV4 prospective when changing from DSL to WAN ?

I dont like to not understand why something isnt working, because in my experience its going to come back and bite sooner or later...

@bill888 although its not recommended for FTTP, I believe the Hub one will handle a 900Mb downstream BUT is limited to 30Mb upstream.

Re: New install - how long until I see a stable speed?

presterjohn — Fri, 09 Jun 2023 19:48:29 GMT

@bill888 it's a great piece of kit but looking at those specs makes me realise that it's probably time to retire it 😃

Re: New install - how long until I see a stable speed?

presterjohn — Fri, 09 Jun 2023 19:53:57 GMT

@MisterW Pihole + Unbound are back up and running now, thank you

I'm going to keep an eye on resolv.conf to see if any other weirdness happens. I'll update this post if I come across anything.