Can anything be done about jitter and packet loss
14-01-2012, 09:09
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#1
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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Can anything be done about jitter and packet loss
My connection has gone really bad over the last couple of months. Makes online gaming pretty crap to be honest.
I think the modem connection power levels etc are within spec so am i looking at a high utilisation problem.
If so is there anything that can be done?
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 315000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 220 55616000 Kbits/sec 315000000 Hz -2.2 dBmV 41.4 dB Hybrid
Locked QAM256 217 55616000 Kbits/sec 291000000 Hz -1.5 dBmV 41.9 dB Hybrid
Locked QAM256 218 55616000 Kbits/sec 299000000 Hz -1.7 dBmV 41.9 dB Hybrid
Locked QAM256 219 55616000 Kbits/sec 307000000 Hz -1.6 dBmV 41.9 dB Hybrid
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 1 20480 Kbits/sec 45800000 Hz 57.5 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Primary Downstream Service Flow
Downstream(0)
SFID 6626
Max Traffic Rate 53000000 bps
Max Traffic Burst 3044 bytes
Mix Traffic Rate 0 bps
Primary Upstream Service Flow
Upstream(0)
SFID 6625
Max Traffic Rate 5140000 bps
Max Traffic Burst 8160 bytes
Mix Traffic Rate 0 bps
Max Concatenated Burst 8160 bytes
Scheduling Type Best Effort
Posted on the community forum a few days ago but had no response from the virgin team on there yet.
Anyone got any ideas.
Thanks
J
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14-01-2012, 09:18
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#2
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Inactive
Join Date: May 2010
Services: Plusnet FTTC,
FoxSat HDR for TV,
Vonage VOIP.
Posts: 2,082
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re: Can anything be done about jitter and packet loss
If you check the modem signal levels sticky you'll see that your upstream is too high. You may well be suffering congestion as well of course
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14-01-2012, 09:23
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#3
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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re: Can anything be done about jitter and packet loss
thanks i'll give virgin a call and see if i can get them to send an engineer out.
J
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14-01-2012, 12:18
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#4
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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Re: Can anything be done about jitter and packet loss
Anyone know if this needs an engineer to fix? Phoned the helpline, got them to agree the upstream power was high. Was informed that this could be fixed without a visit and the problem would be logged and fixed.
J
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14-01-2012, 12:28
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#5
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Inactive
Join Date: Aug 2005
Location: Scotland
Age: 44
Services: Virgin Media - XL Plus package with XXL broadband
SKY HD Multiroom
Freeview HD
Freesat HD
Posts: 2,816
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Re: Can anything be done about jitter and packet loss
Quote:
Originally Posted by jamiefrost
Anyone know if this needs an engineer to fix? Phoned the helpline, got them to agree the upstream power was high. Was informed that this could be fixed without a visit and the problem would be logged and fixed.
J
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if it a network issue that causing alot of people to have high upstream power it need ot be fixed at the ubr which wouldnt require a tech, but generally they have ot senda techa nd confirm the issue and raise it to networks i can only guess there a issue in there area did othey give oyu a fault reference number to quote to check on progress?
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14-01-2012, 12:50
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#6
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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Re: Can anything be done about jitter and packet loss
No fault number or anything, asked specifically if an engineer was needed and was told no.
I'll give it few days or so and call again if I need too.
J
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14-01-2012, 14:28
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#7
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cf.mega poster
Join Date: Aug 2004
Posts: 11,207
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Re: Can anything be done about jitter and packet loss
Change ISP. VM are by far the worst major ISP in the UK for jitter and packet loss, and consequently, gaming.
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14-01-2012, 18:13
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#8
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Inactive
Join Date: May 2010
Services: Plusnet FTTC,
FoxSat HDR for TV,
Vonage VOIP.
Posts: 2,082
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Re: Can anything be done about jitter and packet loss
For fixing the poor performance qasdfdsaq has probably hit the nail on the head but of course the ADSL option for many is even worse.
Regarding the power level then unless it's a networks issue which would have an associated fault reference then it would normally require an engineer visit - standard fix is to move you to a lower attenuation tap in the cabinet and fit a forward path attenuator to your modem cable.
At the low downstream power levels you have they could just change the tap without fitting an attenuator. I'd hazard a guess that some engineer moved your connection when installing another - that happened to me so I had to have an engineer visit to fix it. My betting is that the agent just fobbed you off and nothing will get done - report the problem on the community forum and wait a week for a proper tech to pick it up.
http://community.virginmedia.com/
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14-01-2012, 18:56
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#9
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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Re: Can anything be done about jitter and packet loss
Looked at BT infinity but I don't really want to split my package up so to speak. '40' meg is available but who knows what I'd actually get.
Posted it on the community forum at the beginning of the week so I'll wait and see.
Shame really had virgin for over 10 years
Thanks for the help
J
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14-01-2012, 19:18
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#10
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Wisdom & truth
Join Date: Jul 2009
Location: RG41
Services: RG41: 1Gig VOLT
Rutland: Gigaclear 400/400
Posts: 12,928
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Re: Can anything be done about jitter and packet loss
I've got both VM50 & BT Infinity. For Infinity I get c. 35/8 and I'm 300m from the cabinet.
__________________
Seph.
My advice is at your risk.
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14-01-2012, 19:40
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#11
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cf.geek
Join Date: Feb 2004
Services: V+, XL TV and Phone
XXL BB
Posts: 812
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Re: Can anything be done about jitter and packet loss
Thanks can't really justify 2 connections or should I say can't afford what it would cost to convince the other half to get it.
If only I could get her interested in MW3 lol
J
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14-01-2012, 20:09
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#12
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Wisdom & truth
Join Date: Jul 2009
Location: RG41
Services: RG41: 1Gig VOLT
Rutland: Gigaclear 400/400
Posts: 12,928
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Re: Can anything be done about jitter and packet loss
Shame though. My other half accepted the diversity argument.
__________________
Seph.
My advice is at your risk.
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15-01-2012, 11:14
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#13
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cf.mega poster
Join Date: Sep 2003
Posts: 12,048
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Re: Can anything be done about jitter and packet loss
having 2 connections allowed me to do some neat things back when I had adsl and VM together.
I could change routing at a whim in the command prompt without swapping any cables over.
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15-01-2012, 15:28
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#14
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Wisdom & truth
Join Date: Jul 2009
Location: RG41
Services: RG41: 1Gig VOLT
Rutland: Gigaclear 400/400
Posts: 12,928
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Re: Can anything be done about jitter and packet loss
How do you do that, Chrys? It has puzzled me.
__________________
Seph.
My advice is at your risk.
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15-01-2012, 15:37
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#15
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Inactive
Join Date: Aug 2008
Location: Scotland
Services: VM Cable Broadband & Telco
Posts: 69
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Re: Can anything be done about jitter and packet loss
I am curious to know myself. I have a similar setup as well.
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