FTTC Port Move = DLM reset?
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- Re: FTTC Port Move = DLM reset?
FTTC Port Move = DLM reset?
08-03-2015 12:48 PM
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Tomorrow I have an OR engineer visit booked that 'should' have the explicit instruction to move me to a new port at the DSLAM to try to resolve some attrocious peak time speed drops (54Mbps throughput down to 9Mbps throughput on download only - never losing sync, rock solid at ALL other times).
I am just curious as to how the DLM handles this sort of move. Is the port treated as an effective brand new connection, thusly starting at 80/20? Or does my current DLM setting and profile transfer over?
As I say, more curiosity than anything. Not expecting a miraculous jump in sync rate :D.
Re: FTTC Port Move = DLM reset?
08-03-2015 5:19 PM
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Re: FTTC Port Move = DLM reset?
08-03-2015 5:35 PM
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Openreach's remote monitoring should show if the port is faulty or if the connection to the exchange (CVLAN) is not working as it should or is saturated.
Which exchange are you on?
Re: FTTC Port Move = DLM reset?
08-03-2015 10:13 PM
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AndyH - Unfortunately, I fear it won't help either, but it's currently the next step / small hope.
I connect through the Daviot exchange which according to the lovely lady I spoke with on Friday isn't showing any signs of congestion or oversubscription. Unfortunately, my troubles have every bit the halmarks of congestion/contention, but I don't think it's down to Plusnet network.
Every weekday, my download throughput (only) deteriorates from 54Mbps that it will run all through the day, down to roughly 9-10Mbps at 9pm. This will then begin to climb back to 54Mbps again by 11pm. At the weekend, such as today, download throughput begun to fall at around 2pm. It is still currently down at 10Mbps.
These are todays TBB speed test results if you can be bothered to look through, that clearly indicate the gradual loss of download throughput:
08/03/2015 - 00:02 - http://www.thinkbroadband.com/speedtest/results.html?id=142577281421234698555
08/03/2015 - 12:27 - http://www.thinkbroadband.com/speedtest/results.html?id=14258174543288732074
08/03/2015 - 12:58 - http://www.thinkbroadband.com/speedtest/results.html?id=142581943419009359576
08/03/2015 - 14:31 - http://www.thinkbroadband.com/speedtest/results.html?id=142582501426151190913
08/03/2015 - 14:50 - http://www.thinkbroadband.com/speedtest/results.html?id=142582613224527187588
08/03/2015 - 15:24 - http://www.thinkbroadband.com/speedtest/results.html?id=142582813120708585882
08/03/2015 - 15:59 - http://www.thinkbroadband.com/speedtest/results.html?id=142583023423748136988
08/03/2015 - 16:08 - http://www.thinkbroadband.com/speedtest/results.html?id=142583080775825143289
08/03/2015 - 16:16 - http://www.thinkbroadband.com/speedtest/results.html?id=142583131418742042254
08/03/2015 - 17:26 - http://www.thinkbroadband.com/speedtest/results.html?id=142583545429884080701
08/03/2015 - 17:56 - http://www.thinkbroadband.com/speedtest/results.html?id=142583725432037713439
08/03/2015 - 20:36 - http://www.thinkbroadband.com/speedtest/results.html?id=142584691432614097627 - Lowest ever result
08/03/2015 - 21:51 - http://www.thinkbroadband.com/speedtest/results.html?id=142585146138874363634
08/03/2015 - 22:08 - http://www.thinkbroadband.com/speedtest/results.html?id=142585242219394184743
I've isolated my entire network by connecting directly to the OR modem and using a direct PPPoE session which still produces reduced speed. There are no signs this is an internal REIN issue as the start of the degredation doesn't coincide with anything coming on or being switched on. There are also clearly no issues on my line as I have never suffered a loss of sync, nor has my IP profile or interleaving setting changed. In fact after the engineer visit last week that lead to Wholesale manually degrading my IP profile to 35Mbps, my line immediately jumped back to 54Mbps the next morning, while still suffering the degraded throughput at peak time.
I've hoped gateways more times than I care for when the fault started occuring a month ago, so I don't believe it is PN congestion as I initially did when I started posting in that large thread!
Stumped, so shall await the engineer tomorrow!
Re: FTTC Port Move = DLM reset?
08-03-2015 11:31 PM
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Your exchange is a child of Inverness Macdhui (parent exchange). There are a number of connections at that exchange which are congested and one of them looks to have been ongoing for weeks and is estimated to be fixed on 11 March (new circuit being provisioned).
I cannot tell you which connection (SVLAN) you're on, but the issues you're seeing do tie in with what's being reported by the suppliers (BT Wholesale) on a number of exchanges. Hopefully one of the CRT members at Plusnet can better advise tomorrow.
Re: FTTC Port Move = DLM reset?
08-03-2015 11:55 PM
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Will see what tomorrow brings in both response from PN and with the engineer. I don't suppose a port change might change the SVLAN?
For PN team info - I know this forum account isn't linked to the correct PN account for this fault so the ticket in question is #99438722
Re: FTTC Port Move = DLM reset?
09-03-2015 4:33 PM
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Wholesale denied the port change despite the fact that I was told that was what he was explicitly called out to do. He apparently spoke with both Plusnet and Wholesale, the end of which has lead Wholesale to decide they are still seeing errors (that nobody else is) and they have now applied error correction to my line. Interesting as the ludicrously strict DLM has never done this before.
My throughput has now fallen to 47Mbps and latency has risen due to the error correction.
Even the engineer suspects this will not help. Roll on 9pm to see how low it goes tonight!
Re: FTTC Port Move = DLM reset?
09-03-2015 5:18 PM
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Throughput down to 35Mbps, so will clearly fall exactly as per every other night.
Re: FTTC Port Move = DLM reset?
09-03-2015 7:34 PM
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09/03/2015 - 15:32 - http://www.thinkbroadband.com/speedtest/results.html?id=142591507350368563067 - After line disconnection
09/03/2015 - 15:56 - http://www.thinkbroadband.com/speedtest/results.html?id=142591655248186088748
09/03/2015 - 16:20 - http://www.thinkbroadband.com/speedtest/results.html?id=142591792933391885995
09/03/2015 - 16:57 - http://www.thinkbroadband.com/speedtest/results.html?id=142592016253280987524
09/03/2015 - 17:07 - http://www.thinkbroadband.com/speedtest/results.html?id=142592078633086389034
09/03/2015 - 17:44 - http://www.thinkbroadband.com/speedtest/results.html?id=142592299816588332283
09/03/2015 - 18:35 - http://www.thinkbroadband.com/speedtest/results.html?id=142592602132480224425
09/03/2015 - 19:32 - http://www.thinkbroadband.com/speedtest/results.html?id=142592944116231713399 - Lowest ever speed - 2Mbps
09/03/2015 - 19:33 - http://www.thinkbroadband.com/speedtest/results.html?id=142592951551888988650
Re: FTTC Port Move = DLM reset?
09-03-2015 7:45 PM
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Re: FTTC Port Move = DLM reset?
09-03-2015 8:05 PM
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Could you keep me up to speed with the connection at Macdhui that is scheduled for resolution on Wednesday? As you say it's been outstanding for a number of weeks, that would coincide nicely with when this carry-on started.
Re: FTTC Port Move = DLM reset?
09-03-2015 8:30 PM
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Plusnet need to check if you're on this affected circuit and if so, the estimated date fix.
Re: FTTC Port Move = DLM reset?
09-03-2015 8:52 PM
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Still - it would be interesting to know if I am also being affected by this on top of my lost synch speed.
Re: FTTC Port Move = DLM reset?
09-03-2015 8:59 PM
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Do you also see speed drops at peak times?
Re: FTTC Port Move = DLM reset?
09-03-2015 10:13 PM
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