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I am using a Netgear DG834v4 modem/router. It seems to be capping my download speed at 1 Mbps. Any idea why please? If I swap it for another router I can immediately get about 4 Mbps. When I swap back to the DG834, speeds are immediately limited to 1 Mbps.
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is that speed as in a speed test or speed as in sync speed
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Thanks., It's what I see from a speedtest and from the router stats and from Windows Task Manager ethernet figures. They all show 0.9x or a flat max of 1.0.
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So what are the full stats with the Netgear
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Is the 834 set to just ADSL or G.DMT?
Please give the exact sync speed from it in kbps, not Mbps.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
Edited by RobertoS (Mon 30-Nov-15 10:58:12)
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Sorry, what is G.DMT? Where do I look?
I did a reset of the router and entered my DSL userid/password, nothing else, so everything is default values I guess.
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I forget what the menu is called, but it will be something like Internet, or Connection. It gives a list of tick-boxes with ADSL, ADSL2, ADSL2+ and so on.
G.DMT is what the first of those is often called.
It doesn't matter now we have the stats though, as your stats show you are on either ADSL2 or ADSL2+, which is what I wanted to check, and your sync is not exactly 1152kbps which might also have indicated ADSL/G.DMT.
Assuming you mean you did a Factory Reset of the router, not just a reboot, then it's inexplicable to me. The noise margin shows you have plenty of sync available, and the attenuation fits with the speed you get from others.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
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What is the other router? I am wondering if the "other" router has the ability to manipulate the target SNR and the Netgear isn't. With an SNR of 15 there is wiggle room on the netgear - I suspect the other router is using a different SNR target margin. Can you get stats from the other router?
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The other router is a BT-branded 2Wire 2700HGV.
I'll post the stats (probably tomorrow).
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Better quality modem in the 2wire - very good for long/high attenuation lines.
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M H C
taurus excreta cerebrum vincit
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However, the 19.2dB noise margin on the Netgear is extremely odd.
If it was just a relative capability problem it would be showing whatever his other router shows for it, irrespective of the resultant sync.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
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Digging out old brain cells but do recall the 2Wire having a set of stability versus speed options, and it may be this is set to speed and its managing to set a lower margin, or alternatively just happens to work better with the configuration of the DSLAM the line is connected to.
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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2700HGV, for a while it was the modem of choice for long lines.
only major failing was the power supply, - which when it failed made the modem do mad things.
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Digging out old brain cells but do recall the 2Wire having a set of stability versus speed options, and it may be this is set to speed and its managing to set a lower margin, or alternatively just happens to work better with the configuration of the DSLAM the line is connected to.
Not to my knowledge or at least not openly visible or manually/user configurable ... and I have dealt with a few of them! However, the 2Wire would, on a stable and good line negotiate a 3dB margin after it had been working at 6dB for quite a while with no issues. It would also hold the line even lower -0.7 dB (minus zero point seven) is the lowest is the "best" I have recorded.
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M H C
taurus excreta cerebrum vincit
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Has it got Dgteam alternative firmware installed?
If it has, it may have an adjustable SNRM.
http://www.dgteam-mirror.talktalk.net/Home.html
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The Netgear 834 has adjustable SNRM via telnet with no problem. Just not preserved through a reboot in the manufacturer's firmware. However it is clear that the high SNRM is a result of the Netgear being connected, not a result of the BT Wholesale setting.
I suspect it is simply a dying modem component in it. That's assuming the same cable are being used for both modems. Or it does have DGTeam with the margin fixed high.
The 2-wire is behaving normally. If the BTW noise margin was set high then it would need tweaking, whatever its internal setting if it has one.
19.2dB noise margins do not come from BTW.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
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Strangely (or maybe not) I switched to the 2Wire router and get the 1 Mbps max again.
Stats from the 2Wire are here.
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There is one hint on that page - have you fully checked ALL wires, extensions and filters?
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M H C
taurus excreta cerebrum vincit
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Thank you.
I've changed the filter and that got rid of the message.
However, I'm still only getting about 1 Mbps. I've now tried a third router and get the same speed with all three.
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Every time you change the modem you should follow a set of steps to minimise the potential for DLM interference.
When you want to change over do the following:
Turn off the modem power
Wait 2 minutes (longer than needed however it will make sure)
Disconnect the RJ11 cable from socket to modem (HG612 or HH5)
Power up the replacement device - without it being connected to the line.
Wait 2 minutes for it to fully boot and stabilise.
If using an HG612, connect the router.
Connect the RJ11 cable from line to modem.
Wait for sync, read stats.
Doing it that way should ensure that each loss of connection is seen as a deliberate act rather than a loss of sync due to noise, attenuation or corruption.
Can I suggest doing te above and leaving it OFF for maybe 30 minutes. Turn off anything close by in the house - fridge/freezer, central heating or boiler, TV, HiFi, Xmas lights, &c. And then doing the reboot. Give it 5-10 minutes and then turn everything on again. There is always a chance that a local noise source is giving problems.
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M H C
taurus excreta cerebrum vincit
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Is the sync speed still around 1Mbps? And has the noise margin changed at all? The IP Profile will probably be stopping actual speeds getting above 1Mbps for a while even if the sync speed has increased.
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Thanks. I've tried the reset and will let things settle for a while.
Latest stats (Dlink DSL-504T) are here.
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Going back in my memory - about 15 years!
1152 kbps - that may well be the FIXED 1Mbps downstream rate. Having the same speed on two different modems suggests you have been given a fixed speed profile - could be due to too many disconnect/connect cycles. I know that 0.5 Mbps was 576kbps so 1Mbps could be 1152kbps.
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M H C
taurus excreta cerebrum vincit
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Don't forget this post.
You are correct that BT Wholesale fixed speed 1Mbps is 1152kbps sync, but I think it is just coincidence, as the upstream would be 448kbps.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
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Those D-Link stats are wonky.
If people look back at your earlier stats, the attenuations are in step. The new ones have an almost impossible upstream value.
Which then raises the question of which of the two is correct about the downstream noise margin. The first at 19.2dB or the new at 9dB.
I think you may have a highly variable noise source, with the extra noise being a fixed amount when present. That would account for the earlier results from two modems, but not these latest ones.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
Edited by RobertoS (Tue 01-Dec-15 12:24:23)
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Oh, yes it could. If the noise is still present when you took the D-Link stats. Try taking them every hour, without a re-sync, and see if the noise margin jumps.
I don't know if RouterStatsLite works with the D-Link. It does with the Netgear 834. The graph of the downstream noise margin could be interesting. Sampling at 7 or 10 second intervals.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
Edited by RobertoS (Tue 01-Dec-15 12:28:20)
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