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Flapper_MK
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Message 1 of 10

BT Infinity 2 Speed query

OK I recently upgraded to Infinity 2. On Infinity 1 I got about 36Mb from the 38Mb limit. Thus on infinity 2 I was expecting over 70Mb. I was advised to let thigns settle for 10 to 14 days and then power down the modem and router for 30 seconds and then restart them to get the optimum for my line (for the record we are talking FTTH not FTTC so I should in theory be apable of 330Mb should I wish to fork out the money! I'm currently on a HH3.)

 

After the reset I was surprised to find I only get ~55 to ~57Mb download speed (up is ~17 to ~19) which was well below the expected so I rang not to complain but to report a lower speed than expected.

 

After all the tests against speedtest.btwholesale.com, line checks from BT and from BT Wholesale, no faults have been found. They all report the line rated at 78Mb and they are blaming my powerline adapeters (DLAN 200 series reporting connection speeds in 170-180Mb's range). Now here in things get interesting...

 

Having now located a cable ling enough to run direct to the router from my PC upstairs (a modern top end I5) I have tested with and with out the powerline adapters...

 

PC -> router direct => speedtest.btwholesale.com = 74Mb/s

PC -> router direct => www.speedtest.net = 59Mb/s

 

PC -> DLAN -> router => speedtest.btwholesale.com = 56Mb/s

PC -> DLAN -> router => www.speedtest.net = 57Mb/s

 

Upload speed on all tests is ~17 to ~19 MB/s

 

So when I talk direct to BT wholesale I get the expected line speed but any further and it appears to be capped or something. When the DLAN gets involved the same restriction appears.

 

Anyone got any suggestions as to why?!

 

 

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Message 2 of 10

Re: BT Infinity 2 Speed query


@Flapper_MK wrote:

PC -> DLAN -> router => speedtest.btwholesale.com = 56Mb/s

PC -> DLAN -> router => www.speedtest.net = 57Mb/s

 


 

 


Looks like the DLAN is restricting your speed

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Flapper_MK
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Message 3 of 10

Re: BT Infinity 2 Speed query

PC -> router direct => speedtest.btwholesale.com = 74Mb/s

PC -> router direct => www.speedtest.net = 59Mb/s

 

so why does it slow down going out to the internet speedtest without the DLAN then!?

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Distinguished Guru
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Message 4 of 10

Re: BT Infinity 2 Speed query

You'll have to ask www.speedtest.net about that
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Flapper_MK
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Message 5 of 10

Re: BT Infinity 2 Speed query

no every other speed test i tried reported 55 to 57Mb/s with the cable - not just that one

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Message 6 of 10

Re: BT Infinity 2 Speed query

As you can see, the BT performance test is showing there are no problems with your connection. Any speed test variance you have is probably down to your equipment or browser.

Is there a specific problem you want help with?

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Flapper_MK
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Message 7 of 10

Re: BT Infinity 2 Speed query

No, I accept that the DLANs are having an impact.

 

What I don't get is why there is a slow down when I go passed BT wholesale even with a direct cable. If the "route" is this :

 

PC > router > modem > fibre > cabinet > fibre > exchange > fibre > bt wholesale > "network" > BT (as ISP) > internet

 

then to the BT wholesale I get 74Mb, but to the "internet" I get 57Mb. Why is BT throttling me?

 

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Distinguished Guru
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Message 8 of 10

Re: BT Infinity 2 Speed query

Do you have a Homehub 5?
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Flapper_MK
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Message 9 of 10

Re: BT Infinity 2 Speed query

no only a homehub3

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Message 10 of 10

Re: BT Infinity 2 Speed query

In order to rule out the Homehub3 as potentially being the device responsible for your perceived capping, you can connect the modem directly to the PC and try some more speedtests. To do that  follow these steps:

 

Step 1: Remove the homehub from the modem

Step2: Connect your pc/laptop to the modem using LAN1 port

Step3: Open network and sharing centre on windows and click set up a new connection or network

Step4: Connect to the internet then click make a new connection Broadband PPPoE

Step5: Username bthomehub@btbroadband.com and the password as BT

Step6: connect, If it doesn't,keep pressing try again until it does.

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