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Standard User tommy45
(fountain of knowledge) Wed 19-Jan-11 19:43:54
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Re: fluorescent lights, noise interference part 2


[re: Chrysalis] [link to this post]
 
That's interesting, as i to have a new isp. and have Annex M i get between 1.85 -1.7 mbit upload on a 3db snr fast path, the error's on my upstream seem higher than the downstream, but my upstream snr will fluctuate,where as the downstream is more or less flat-line's on 3db or a bit higher,
The interference can still be seen on the tbbqm, and sometimes but not always on ping plotter as packet loss,+jitter, but doesn't seem to affect throughput as much, in testing i set the snr to 1db got a 19.5mbit sync and 1.4mbit upstream on annex a as it doesn't sync back on annex m if i tweak the snr, the good thing is my throughput is a lot better that used to be at one point,
The other observation i can report is the latency seems to reversed,
when on uko if i maxed out my downstream my latency would be around 180-200ms whilst downloading (to bbc.co.uk) and the upstream would be less always, however now on be it's the other way around upstream is 400ms+ whilst downstream is 40-50ms regardless of adsl mode ?
which i think is a bit odd,
whilst on that subject of latency another strange thing is that apart from the bbc my pings to tbb are higher than they used to be, bbc i get 13ms as i used to on uko, my ping to the be exchange kit is lower now only by 3-4ms but not constant & will fluctuate to old uko value,of 10-12ms
Yesterday i notice that pings to tbb and other sites inc uts.ubi.com (gaming server) went lower for several hours then returned to the usual higher value lower was co-incidentally just less than the normal times i would get on uko


/usr/sbin/adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 8000
Channel: FAST, Upstream rate = 1788 Kbps, Downstream rate = 16780 Kbps
Link Power State: L0
Mode: ADSL2+ AnnexM EU-56
Channel: Fast
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 3.3 3.6
Attn(dB): 33.5 16.3
Pwr(dBm): 18.4 13.1
Max(Kbps): 19850 1750
Rate (Kbps): 16780 1788
G.dmt framing
K: 255(0) 51
R: 0 0
S: 1 1
D: 1 1
ADSL2 framing
MSGc: 55 16
B: 254 50
M: 1 1
T: 2 3
R: 0 0
S: 0.5249 0.9807
L: 3886 416
D: 1 1
Counters
SF: 338147 338315
SFErr: 959 277293
RS: 0 0
RSCorr: 0 0
RSUnCorr: 0 0

HEC: 337 82073
OCD: 0 0
LCD: 0 0
Total Cells: 214246282 2967109221
Data Cells: 16652395 105300039
Drop Cells: 0
Bit Errors: 0 8942386

ES: 808 197809
SES: 0 0
UAS: 49 1768
AS: 5415

INP: 0.00 0.00
PER: 16.01 16.18
delay: 0.13 0.24
OR: 30.47 10.87

Bitswap: 1641 839

Total time = 1 hours 31 min 21 sec
SF = 338147
CRC = 959
LOS = 0
LOF = 0
ES = 808
Latest 1 day time = 1 hours 31 min 21 sec
SF = 338147
CRC = 959
LOS = 0
LOF = 0
ES = 808
Latest 15 minutes time = 1 min 21 sec
SF = 5074
CRC = 20
LOS = 0
LOF = 0
ES = 19
Previous 15 minutes time = 15 min 0 sec
SF = 56253
CRC = 200
LOS = 0
LOF = 0
ES = 168
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 56191
CRC = 184
LOS = 0
LOF = 0
ES = 152
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 56191
CRC = 125
LOS = 0
LOF = 0
ES = 108
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF = 56254
CRC = 175
LOS = 0
LOF = 0
ES = 155


Edited by tommy45 (Wed 19-Jan-11 19:51:44)

Standard User Chrysalis
(eat-sleep-adslguide) Wed 19-Jan-11 22:04:06
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Re: fluorescent lights, noise interference part 2


[re: deleted] [link to this post]
 
you mean routers smile all 6 of them. 3 billion routers, 2 netgear and 1 speedtouch

the errors arent of a critical amount (performance is fine), but in the past I remember getting almost 0 errors on the upstream maybe 10 or so a day.

today I have had 2450 errors on downstream and 2732 errors on upstream.

Edited by Chrysalis (Wed 19-Jan-11 22:07:50)

Standard User deleted
(deleted) Wed 19-Jan-11 22:14:39
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Re: fluorescent lights, noise interference part 2


[re: Chrysalis] [link to this post]
 
Well, something's causing it. I thought you'd moved house, ISP, etc but kept the same router...


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Standard User Chrysalis
(eat-sleep-adslguide) Thu 20-Jan-11 06:41:34
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Re: fluorescent lights, noise interference part 2


[re: deleted] [link to this post]
 
no just changed isp.

so common factor that hasnt been changed is line between me and exchange. now on new dslam, different router. In the past filters and cables have been ruled out.

now its not critical tho and I can lve with it, before it was much worse when I was pushing the upstream harder.
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