Terrible ping times (>2000ms)
FIXED
I'm regularly getting ping times of several thousand milliseconds. The following shows ping times in ms over a couple of days, measured at one minute intervals.
This is using a wired connection to the router, but wireless connections see similar problems. I've tried in on several computers using both Windows and Linux and get the same result.
During a period of high ping time, I typically get something like the following traceroute (this one was measured over about an hour):
Note, average ping times over the hour are over 2000 ms. Needless to say, the internet connection is utterly useless. Any clues as to what's going on?
Yep, looks like you've got a problem there -
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@dsberry wrote:
My upload speed has never been brilliant (around 1 Mbps), but originally it seemed to be enough. But not now.
@dsberry the fundamental problem you have is that your upload speed is currently too low for FTTC.
From years of overcoming bufferbloat on my previous "ADSLMax Premium" connection (upload sync 832Kb), I can tell you that there is a tipping point for bufferbloat going bad, and that occurs when the available upload bandwidth goes below about 710Kbps to 720Kbps - due to physics and maths.
This seems to match with your experience, in that your broadband was OK when the upload speed was nearer to 1Mbps, and now it's terrible with your upload speed at 699Kbps.
The first thing you are going to need to try is getting your upload speed back up towards 1Mbps, as the usual anti-bufferbloat measures won't work until you have enough available margin on your upload bandwidth to buffer your outgoing data stream.
First a few questions -
- Does your BT Master Socket have a filtered faceplate ?
- Is your router plugged in to the Master Socket faceplate with a short cable ?
- Do you have a landline telephone plugged in, and if so is it into the Master Socket or an extension socket ?
- Does your house have telephone extension wiring at all ?
- Do you happen to have ANY other routers available to play with - if so what model numbers are they ?
@Dan_the_Van The devices list in the advanced settings only seem to include the total data transferred since the last router reboot. It shows that all my main devices have uploaded and downloaded significant amounts of data (but not larger than I would expect) since then. What I'd really like to see is the current instantaneous (ish) data rates rather than the total data transfer since the last router reboot.
I've attached the technical log. Thanks in advance for any insights you can provide.
@dsberry my first impression is that your upload "Data rate" has been "banded" but otherwise doesn't look too bad (for a long line).
Before attempting to get the "banding" removed, I'd like to see whether your line can perform any better when just your router is plugged into your FTTC line WITHOUT the BT faceplate and without the telephone attached.
Do you have a dangly DSL filter that can be used to convert you router's RJ11 DSL cable to fit into a BT431A phone socket ?
something like this -
if so can you follow the instructions in this video - YouTube : How to Connect into the Master Test Socket
Once you have your dangly DSL filter plugged into the hidden TEST socket, and your router plugged into the filter
can you capture a screenshot of you router's DSL "Technical log" (as done previously), so we can see if it's "Maximum Data Rate" improves, or the "Noise Margin" goes down.
The quiet line test - both with the faceplate in place and using the internal test socket - just gives a small amount of white noise, as I'd expect from any audio device. Below is the technical log I see with the phone disconnected.
