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Cruncher
(member) Sat 17-Dec-22 11:30:38

Moved from Zen to Plusnet, full sync but capped at 70Mbps?

[link to this post]

Hi all,

I moved to Plusnet around a month ago now from Zen. Have always synced at the full 79999/20000 for the 5 years I've been at this address with Zen.

Ever since I've been connected to PN (same equipment, I simply changed the log in details on the router) I've only ever managed a maximum DL of 70Mbps, despite being connected at the full speeds.

I'm using an unlocked HG612 with an Asus RT-AC86U, wired connection, no recent changes to any hardware.

Spoken with PN and they can see nothing wrong with the connection, am provisioned correctly.

Have rebooted the modem a couple of times in the past month with no change, most recently just now.

Any thoughts what could be the cause? I know its only about a 5Mbps loss but its frustrating that there is no reason, that I can see, that I shouldn't still be getting the full speeds that I've been getting for the last 5 years!

Thoughts?

Line Stats:

Text

Stats recorded 17 Dec 2022 11:27:41
 DSLAM type / SW version:        BDCM:0xc190 (193.144) / v0xc190
Modem/router firmware:          AnnexA version - A2pv6C038m.d24jDSL mode:                       VDSL2 Profile 17a
Status:                         ShowtimeUptime:                          0 hour 13 min 17 sec
Resyncs:                        1 (since 08 Dec 2022 12:26:35)                        
                                Downstream      UpstreamLine attenuation (dB):          14.1            0.0
Signal attenuation (dB):        Not available on VDSL2          Connection speed (kbps):        79997           20000
SNR margin (dB):                4.3             11.0Power (dBm):                    13.5            4.5
Interleave depth:               8               1INP:                            54.00           0
G.INP:                          Enabled         Not enabledVectoring status:               5 (VECT_UNCONFIGURED)           
 RSCorr/RS (%):                  0.0000          0.0000
RSUnCorr/RS (%):                0.0000          0.0000ES/hour:                        0               0.35

My BQM

candlerb
(knowledge is power) Sat 17-Dec-22 11:56:59

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: Cruncher] [link to this post]

As you've seen, the line is still achieving the full sync speed (just).

What download test are you doing? You should try to multiple different sites. It's possibly related to the traffic paths between those sites and the Zen/Plusnet networks.

However, it's also possible that Plusnet are performing traffic shaping at the BRAS to cap your download speed, a.k.a. "IP Profile". This stops the DSLAM from dropping packets, but is also designed to improve your performance when using interactive traffic like gaming, ssh or VOIP at the same time as a large download is taking place. The result is that you'll see lower latency and jitter for the interactive traffic, so a better experience overall, at the expense of a slight reduction in the background download speed. Google "bufferbloat" for the full story, but roughly you can think of it as reserving a small amount of your bandwidth for the interactive traffic, so that it can queue-jump the big download.

On the whole I'd say: don't worry about it, and enjoy the service. Remember that there are many people who get much, much lower speeds on FTTC - but still pay the same as you!

IanBB
(committed) Sat 17-Dec-22 15:04:39

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: Cruncher] [link to this post]

You can see the IP Profile candlerb refers to in the additional diagnostics page of the BTW speedtest.

ps your BQM no longer works.

Cruncher
(member) Fri 23-Dec-22 21:44:45

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: candlerb] [link to this post]

Sorry totally forgot to reply.

Tried many speed tests, and downloads all wired, all the same.

IP Profile is 74/20 according to speedtest.btwholesale.com.

Text

Download Test
Download speed achieved during the test was 69.84 MbpsFor your connection, the acceptable range of speeds is 40 - 74 Mbps
IP Profile for your line is 74 Mbps 
Upload TestUpload speed achieved during the test was 18.82 Mbps
IP Profile for your line is 20 Mbps

I'm not super concerned, a bit annoyed as it it was perfectly fine with Zen, still pinging at 6-8ms just I was hitting 75Mbps every time.

Yes BQM is the old connection, I've not edited it yet.

My BQM

Cruncher
(member) Thu 16-Feb-23 09:24:34

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: Cruncher] [link to this post]

Update, I'm back to full speed.

The culprit? Bearer 0 INPRein = 1.00. Capped the line and a few days later DLM turned it off (INPRein = 0.00) and now I have my full speed back.

Thank you to this thread, and those in it, especially @j0hn83: https://forums.thinkbroadband.com/general/f/4727548-...

...and thanks to PlusNet for refusing to do anything about it, when a DLM reset would likely fixed it. :/

My Broadband Ping

broadbandjockey
(committed) Thu 16-Feb-23 09:45:48

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: Cruncher] [link to this post]

In reply to a post by Cruncher:
Update, I'm back to full speed.

The culprit? Bearer 0 INPRein = 1.00. Capped the line and a few days later DLM turned it off (INPRein = 0.00) and now I have my full speed back.

Thank you to this thread, and those in it, especially @j0hn83: https://forums.thinkbroadband.com/general/f/4727548-...

...and thanks to PlusNet for refusing to do anything about it, when a DLM reset would likely fixed it. :/

That's one reason why Zen are more expensive than Plusnet, "..you pays your money, you takes your choice...."

j0hn83
(knowledge is power) Thu 16-Feb-23 10:20:19

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: Cruncher] [link to this post]

You're welcome. It's a handy trick.

A DLM reset would likely have seen the line return to Retx High as that tends to be the default.

I can't see Zen having done any different to be honest. Providers are generally unwilling to try a DLM reset when you're above the minimum guarantee.

Cruncher
(member) Thu 16-Feb-23 10:39:35

Re: Moved from Zen to Plusnet, full sync but capped at 70Mbp

[re: j0hn83] [link to this post]

It is, I just wish I had found it sooner! smile

Ah ok, good to know, thanks for commenting, and again, thank you.

My Broadband Ping

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