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Packet Loss 4pm to 10pm each day

SteveA
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Registered: ‎17-06-2007

Re: Packet Loss 4pm to 10pm each day

 psb-bng04 is pretty much useless  - each time I'm on it latency is through the roof, packet loss is through the roof.

 

psb-bng01 and psb-bng03 seem to be OK (apart from these odd huge blips - which I'm convinced is either my router having some sort of fit as the wireless stops working .... or its something at PN's end)

 

 

Mustrum
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Registered: ‎13-08-2015

Re: Packet Loss 4pm to 10pm each day

Is that Southbank or Colingdale, both site I think have 4 gateways?

SteveA
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Re: Packet Loss 4pm to 10pm each day

southbank

SteveA
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Re: Packet Loss 4pm to 10pm each day

I think its back again... arrrgggghhh

 

badagain.png

SteveA
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Re: Packet Loss 4pm to 10pm each day

twice a day ......

5044caec8ec516d8c0105e247c694707-03-02-2017

This is maddening..... Line is rock solid when its not doing this.....
scrookes
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Re: Packet Loss 4pm to 10pm each day

Hi @SteveA,

According to logs your connection is currently routed via psb-bng03.  If you see an issue with packet loss again, can you also post WinMTR stats along with the BQM graph please.

SteveA
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Re: Packet Loss 4pm to 10pm each day

Will do -  I was hoping to be able to do it for this morning as I left WinMTR running last night but it looks like one of my cats managed to stop it sometime during the night.

MrSilver
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Re: Packet Loss 4pm to 10pm each day

SteveA - I've forced myself onto psb-bng04 to see if I get the same, If i don't then it probably rules out the outbound of the BNG (depending how plusnet configure it there may be multiple paths out).

If when you switch BNGs the next is fine the key is to find out what are the common points on the connection you have, e.g. the svlan will be the same for all BNGs so if you are fine on one and new gateway its bad then that pretty much rules out a hot svlan.

As its in the 4-10 zone that would imply some form of congestion (for that time of day) although from some of the graphs its 6am too, which would point less to congestion and more to a faulty link somewhere.

My assumption is there are more paths across BTs network to PLusnet than Plusnet has from the BNG out.

One really good test would be to get rid of your static IP account (not sure how attached you are to your static IP?) and move onto the new network that doesn't go through the BNGs. 

Alternatively not sure if plusnet has a second username/password then can give you for say a week to test against to see if you still get lots of packetloss there, might help narrow down which bit of the network is causing your issue and if you can be given a second account that would mean you keep the static IP (that might cause lots of systems issues though so dont hold your breath on being able to get one!)

SteveA
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Re: Packet Loss 4pm to 10pm each day

the way it happens in blocks would suggest some sort of congestion - 4 to 10 during the week you could say was kids coming home from school and then going to bed... but it happens at weekends too, and now there's been these two early morning blocks : way too early to be everyone checking facebook etc before they go to work.  I did wonder if its my YouView box doing something funky when its checking for updates but surely it wouldn't take that long.

There's been some low level packet loss this evening... WinMTR shows about 4 lost packets (which is way less that the TBB graphs would suggest) and  TS Reader is showing 92 Continuity errors over the same period (from about 18:00)

 

SteveA
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Re: Packet Loss 4pm to 10pm each day

stats for this evening ... no big drops this evening so far.  TS Reader showing 106 continuity errors

 

WinMTR Statistics

 

Host % Sent Recv Best Avrg Wrst Last
192.168.0.66 0 12297 12297 0 0 4 1
lo0.central10.psb-bng03.plus.net 1 12282 12278 9 11 109 10
411.be7.psb-ir02.plus.net 1 12279 12274 10 11 161 11
195.99.125.142 1 12278 12273 10 11 89 10
peer1-et-2-1-0.telehouse.ukcore.bt.net 1 12271 12264 10 12 104 11
No response from host 100 2497 0 0 0 0 0
po4-31.core-rs2.thdo.ncuk.net 1 12271 12264 11 19 412 13
pingbox1.thinkbroadband.com 1 12270 12263 11 12 113 11
MrSilver
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Re: Packet Loss 4pm to 10pm each day

 

On psb-bng04 not a single drop to pingbox after 8000 pings 7pm-10pm 

Host % Sent Recv Best Avrg Wrst Last
ZyXEL.Home 1 8751 8750 0 0 41 0
lo0.central10.psb-bng04.plus.net 1 8753 8752 0 7 68 7
411.be8.psb-ir01.plus.net 1 8751 8750 0 7 63 7
core1-BE1.southbank.ukcore.bt.net 1 8751 8750 0 7 62 7
62.172.103.23 1 8751 8750 0 7 49 8
No response from host 100 1753 0 0 0 0 0
te2-1-9.star10g.bdr-rt3.thdo.ncuk.net 1 8749 8747 0 11 222 8
po4-31.core-rs2.thdo.ncuk.net 1 8752 8751 0 14 367 9
pingbox1.thinkbroadband.com 0 8749 8749 7 7 25 8
SteveA
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Re: Packet Loss 4pm to 10pm each day

So different routes there - and you have lower max times through the PN network but I'm not sure how relevant the max times are....

MrSilver
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Re: Packet Loss 4pm to 10pm each day

id ignore the max if the average and low are pretty much the same. Also ignore all the middle hops if the end hop is good as they will have lower priority than the destination which is a dedicated ping box. looks like my latency to the BNG is a couple of ms lower but that's about the only latency different, to pingbox you are getting about the same as to the bng like i am.

I'll stay on bng04 as you had problems with that to see if i can get any, my tbb graph is clean at the moment, will see what looks like in the morning too.

rongtw
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Re: Packet Loss 4pm to 10pm each day

@MrSilver  pcn-bng01.  been good tonight Smiley

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SteveA
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Re: Packet Loss 4pm to 10pm each day

no problems overnight - TBB graph shows small blips but WinMTR shows only a 20 packet difference between the first and last hops with averages all between 10 and 18ms.

 

TSReader (monitoring the multicast TV as i have problems there too ) shows 165 continuity errors in the same period