Sudden change of latency/speed (BT change?)
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- Re: Sudden change of latency/speed (BT change?)
Sudden change of latency/speed (BT change?)
18-03-2015 3:09 PM
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Rightly or wrongly, I conclude that BT have "done some maintenance" somewhere in the network (a quiet line test is quiet!) and also that pcl-bng02 is having problems with throughput (it's "connected users" figures are currently nearly double most of the other gateways, though the relative capacities are unknown)
Phil
Using a TP-Link Archer VR600 modem-router.
Re: Sudden change of latency/speed (BT change?)
18-03-2015 7:51 PM
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I keep a monitor running which pings 8.8.4.4 and Plusnet DNS (212.159.13.49) and records latency - it had been showing a very steady 10ms since we had fibre installed. At 13:00 on Monday 16th it jumped to 24ms, and has stayed there ever since. Line speed is still a good 35-40Mbps, and I'm not seeing any packet loss.
So I don't think there's a fault as such, but something has clearly been rerouted somewhere.
Re: Sudden change of latency/speed (BT change?)
19-03-2015 2:22 PM
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Re: Sudden change of latency/speed (BT change?)
19-03-2015 2:37 PM
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This was when Interleaving switched off on 10th March (My line has been interleaved for a long time having recently just had this brief spell without interleaving):
Interleaving typically adds 8ms each upstream and downstream on my line (so steps of around 16ms are a typical symptom)
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
Re: Sudden change of latency/speed (BT change?)
19-03-2015 2:55 PM
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Quote from: w23 Here's my graph from 13th March when my line changed from Fastpath to Interleaved (I know this because my VDSL Router tells me)
So that looks exactly like mine! From around 10ms to around 25ms !
Unfortunately I don't have the luxury of a router that tells me if I'm on fastpath or interleaved (it's a TG582n). Can someone from PN confirm?
If interleaved, how can it request this to be removed and set back to fastpath?
Re: Sudden change of latency/speed (BT change?)
19-03-2015 2:57 PM
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Re: Sudden change of latency/speed (BT change?)
19-03-2015 3:04 PM
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What's the process time frame at play here - Just keep going and *evently hope* that interleaving will be turned off at some nondescript point in the future?
Re: Sudden change of latency/speed (BT change?)
19-03-2015 3:08 PM
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It can range from a week or longer for interleaving to be removed. You need the errors to drop below a certain threshold though for this to happen.
Re: Sudden change of latency/speed (BT change?)
19-03-2015 3:11 PM
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Plusnet haven't really been able to help though... sounds like a fault ... that they are refusing to send an engineer for!
See here for my issue: http://community.plus.net/forum/index.php/topic,137362.32.html
Re: Sudden change of latency/speed (BT change?)
19-03-2015 3:33 PM
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Quote from: AndyH Your line will be erroring for some reason.
It can range from a week or longer for interleaving to be removed. You need the errors to drop below a certain threshold though for this to happen.
Can I request a check of my line then please Plusnet peeps?
Cheers
Re: Sudden change of latency/speed (BT change?)
19-03-2015 5:04 PM
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Re: Sudden change of latency/speed (BT change?)
19-03-2015 5:19 PM
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Pass but a voice fault ? Um....
Re: Sudden change of latency/speed (BT change?)
19-03-2015 5:29 PM
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Re: Sudden change of latency/speed (BT change?)
19-03-2015 5:48 PM
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Re: Sudden change of latency/speed (BT change?)
21-03-2015 5:01 PM
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It looks like there's a few of us experiencing the same thing occurring at around the same time which is an odd coincidence. I'd be curious to see if it's in any way geographically connected. I'm in the south east, and think I go via Faraday when my connection hits London (assuming that makes a difference).
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- Re: Sudden change of latency/speed (BT change?)