New router made internet slow

Hope this is the right forum

I had a BT Homehub, but due to Black Ops on PS3 not being able to set the NAT type correctly, I just bought a Netgear DGN3500.

On the homehub, I was getting between 6-10 Mbps on speedtest.net. Since setting up the Netgear it's 0.75 Mbps or thereabouts.

Oddly, in the router status, it has the downstream connection speed as 4.5 Mbps.

I hope this is just a setting I need to adjust.

Please help.

Thanks,
Ben

Did you do a lot of reconnections close together when installing the Netgear? Please can you run a BT Performance Test and post the full results up to the end of the Upstream results.

Edited by RobertoS (Sun 09-Jan-11 17:24:35)

Did you do a lot of reconnections close together when installing the Netgear?

Do you mean connecting to the router, or connecting to BT Broadband? I don't think so, but it's possible.

Shortly I'll also reconnect the homehub to confirm that speeds are good with that router.

Results of test:

Test1 comprises of two tests

1. Best Effort Test: -provides background information.

Download Speed
582 Kbps

0 Kbps 1000 Kbps
Max Achievable Speed

Download speedachieved during the test was - 582 Kbps
For your connection, the acceptable range of speedsis 400-1000 Kbps.
Additional Information:
Your DSL Connection Rate :4524 Kbps(DOWN-STREAM), 888 Kbps(UP-STREAM)
IP Profile for your line is - 750 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 11.52:22.9:65.58 (SBE:NBE:PBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.

The results of this test will vary depending on the way your ISP has decided to use these traffic classes.

2. Upstream Test: -provides background information.

Upload Speed
723 Kbps

0 Kbps 888 Kbps
Max Achievable Speed

>Upload speed achieved during the test was - 723 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 888 Kbps


We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance

we now need your router stats

attenuation and noise margin etc

look kinda like this

Line state Connected
Connection time 1 day, 7:58:37
Downstream 4,704 Kbps
Upstream 448 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 7.6 dB / 20.0 dB
Line attenuation (Down/Up) 49.0 dB / 26.0 dB
Output power (Down/Up) 19.7 dBm / 12.1 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 3
Loss of Power (Local) 0
FEC Errors (Down/Up) 124991 / 9
CRC Errors (Down/Up) 498 / 2147480000
HEC Errors (Down/Up) nil / 4
Error Seconds (Local) 799

IP Profile for your line is - 750 Kbps

therein lies the problem. Leave it powered off for half an hour, in case you got overlooked, otherwise you may have to wait a day or two for it to restore.

Thanks. What does this mean? Is it just a coincidence that it happened at the same time as I changed the router?

You're saying I should leave the router off completely for a while, yes?

If it doesn't come back up to speed, it's a BT problem, right?

In reply to a post by bbawden:

Thanks. What does this mean? Is it just a coincidence that it happened at the same time as I changed the router?

Probably not. - The exchange has seen your line as troublesome.

You're saying I should leave the router off completely for a while, yes?

Yes - overnight if you do not need it on.

If it doesn't come back up to speed, it's a BT problem, right?

It will come back - may take a day or two.

The IP Profile has been mentioned. You can see it is at 750kbps. That means within a couple of days or so beforehand you had a connection speed of between 864kbps and 1120kbps.

The IP Profile is what determines your maximum download speed. It is set by your connection speed but with a variable time lag.

It can take a while to rise to the 3500kbps that your 4524 connection warrants.

See this page for full details of how it works.

Also on that site read about Noise Margins and the BT DLM. You have upset it!

As andyboygsi says, we need to see the full line stats, particularly the speeds, attenuations and noise margins. Those will tell us what speed you should be able to connect at, and give us more info about much you have upset the DLM. That's what my question about lots of reconnections in a short time was about.

Best to do a single reconnection in daylight and get the stats then. See if the method for other Netgears at the bottom of my Tweaking page works, but only try the info --stats one, not the configure --snr stuff! Messing with the SNR at this stage could make things far worse.

Edited by RobertoS (Sun 09-Jan-11 23:36:35)

Thanks for your help, @RobertoS and @Sandgrounder.

I switched the router off completely last night around 22:00
I'm leaving it off until I get back from work tonight at about 17:30 and will check it then.

If I still have problems I'll find the stats on noise and attenuation.

One thing that I'm a bit confused on. You said above that I should get download speeds of 3500kbps or thereabouts.
Before I was definitely getting a speed on speedtest.net of 8000 - 10000 kbps

Thanks again, this has been quite interesting in between the frustration!

Edited by deleted (Mon 10-Jan-11 08:39:26)