That is another person with the same problem and same answers from zen i suppose.

Im not going to bother because I always get the same reply that all is good.

Ill just look somewhere else when contract is up. I did not want to move from zen but they leave no choice. Lets hope it improves until April so I can stay because other then this everything is good.

In reply to a post by 3MbBik:

My problem is that I get perfect single thread downloads between midnight and around 09:30 hrs.
for example: http://www.thinkbroadband.com/speedtest/results.html...

But during the working day and evening my ability to download a single thread is totally crippled.
for example: http://www.thinkbroadband.com/speedtest/results.html...

My ping test during the day to 8.8.8.8 lost 7 out of 1000 with a minimum delay of 17ms, average of 20ms and maximum 38ms

I have probably been a Zen customer for around 15 years but their eventual reply to my recent email about this problem left me rather annoyed to say the least!

Pretty much identical to my experience - I find it starts to go wrong at around 8am and doesn't ease up until midnight. It's sometimes better at weekends (30-40Mbit/s per thread).

I am also totally disappointed at Zen's response. I used to recommend Zen on the basis of their support. No more - now I'm actively discouraging people from moving

In reply to a post by 3MbBik:

My problem is that I get perfect single thread downloads between midnight and around 09:30 hrs.
for example: http://www.thinkbroadband.com/speedtest/results.html...

But during the working day and evening my ability to download a single thread is totally crippled.
for example: http://www.thinkbroadband.com/speedtest/results.html...

My ping test during the day to 8.8.8.8 lost 7 out of 1000 with a minimum delay of 17ms, average of 20ms and maximum 38ms

I have probably been a Zen customer for around 15 years but their eventual reply to my recent email about this problem left me rather annoyed to say the least!

When this is happening do a pathping to a couple of websites. Post the results here. It will show where packets are getting dropped. Then you have evidence.

These are a few pathping results;

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

Hi all

Experiencing something similar. I had originally thought that my experience was limited to Canterbury, but maybe it's a wider issue than that.

Since the end of January, almost every night, at almost exactly 8:30pm my broadband will slow down to between 15Mb/s and 25Mb/s. This is down from a usual of above 60Mb/s. Naturally, I'm doing the tests with nothing else connected. Oddly upload speed is still good at above 18Mb/s.

As for latency, locally, it climbs from 10ms to between 35ms - 80ms and local ping tests show very erratic. One ping can be 40ms the next 80ms then the next 30ms. Usually (Unless I'm uploading) my latency remains between 10ms and 19ms.

� December 1 2015
� January 20 2016
� February 1 2016
� February 4 2016
� February 07 2016
� Link to live graph

� Speed test conducted at 7pm tonight: Link
� Speed test conducted past 8pm tonight: Link
� Speed test conducted past 12am tonight: Link

What's interesting about the above graphs is that in the over 1.5 years of having the Zen Fibre Package 02 (80Mb/s) my usage patterns have remained fairly consistent, around 650GB/month. Usually between 8pm & 10pm we are using the broadband connection yet in the past I barely noticed any increase in average latency (blue) and only the maximum latency would spike (yellow).

To me this looks like congestion (fault or too many people). Though I had thought this was possibly limited to the Canterbury exchange (which I believe Zen have presence at) and considering that it has happened out of the blue since end of January I'm not sure this can be "just due to more people" as opposed to a fault which is only noticeable at peak periods. However, if what I'm experiencing is not limited to Canterbury I'm not sure what's going on.

I would like to add that I have emailed and phoned Zen and whilst at first they were not 100% cooperative since calling them and addressing the issue they are testing my line to see the problem during the evening and have stated they agree it looks like congestion. Whether they will be able to solve this as soon as possible remains to be seen.

-
PS: Not sure if this is useful as only JUST started to monitor it but it's my first hop's IP latency graph, first hop is of course a Zen Router as they seem to have presence in Canterbury. What's interesting is that it also seems to be showing something similar to my line but on a lower degree: See Here!

I'm not sure if this is normal behaviour I'm seeing as I only just started to record the results from this IP, maybe it is just coincidence and is just usual behaviour but it is interesting.

Edited by deleted (Thu 11-Feb-16 00:58:31)

In reply to a post by 3MbBik:

These are a few pathping results;

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

http://s1070.photobucket.com/user/3MbBik/media/pathp...

I notice that we seem to be on the same gateway (62.3.84.27) and we have practically identical issues. I wonder if there's something in common there?

One thing I liked about Entanet (when I was a customer) is that they happily published graphs showing how congested their links to BT were, so it was easier to tell if slow speeds were a local issue or an ISP one.

Edited by deleted (Thu 11-Feb-16 11:17:22)

In reply to a post by Fugitive_Legacy:

PS: Not sure if this is useful as only JUST started to monitor it but it's my first hop's IP latency graph, first hop is of course a Zen Router as they seem to have presence in Canterbury. What's interesting is that it also seems to be showing something similar to my line but on a lower degree: See Here!

I'm not sure if this is normal behaviour I'm seeing as I only just started to record the results from this IP, maybe it is just coincidence and is just usual behaviour but it is interesting.

In reply to a post by sor:

In reply to a post by 3MbBik:

These are a few pathping results;

http://s1070.photobucket.com/user/3MbBik/media/pathp...
http://s1070.photobucket.com/user/3MbBik/media/pathp...
http://s1070.photobucket.com/user/3MbBik/media/pathp...
http://s1070.photobucket.com/user/3MbBik/media/pathp...

I notice that we seem to be on the same gateway (62.3.84.27) and we have practically identical issues. I wonder if there's something in common there?

One thing I liked about Entanet (when I was a customer) is that they happily published graphs showing how congested their links to BT were, so it was easier to tell if slow speeds were a local issue or an ISP one.

Very interesting as the above graph I linked to which I'm now tracking with Think broadband's Quality monitor is the same server you guys have mentioned: 62.3.84.27

Maybe it's this router which is causing the problem. It will be interesting to see the graph results from 8:30pm tonight

Edit: Also not sure how much it matters, but, when speaking to Zen if they have presence at your exchange can make a large difference in their ability to address congestion as you're directly connected to them.

Edited by deleted (Thu 11-Feb-16 13:07:24)

I'm also on the same gateway through BTW based ADSL2+ (no Zen presence in exchange).

Text

1 23 45 67 89

Tracing route to bbc.co.uk [212.58.244.22] over a maximum of 30 hops:    1    <1 ms    <1 ms    <1 ms  192.168.0.1   2    23 ms    23 ms    22 ms  losubs.subs.dsl6.th-lon.zen.net.uk [62.3.84.27]  3    31 ms    22 ms    23 ms  ae1-133.cr2.th-lon.zen.net.uk [62.3.86.133]   4    22 ms    22 ms    23 ms  ge-2-0-0-0.cr1.th-lon.zen.net.uk [62.3.80.41]  5    23 ms    23 ms    24 ms  82.71.254.134    etc.

BQM for 10-02-2016
Live BQM

Watching this with some interest as although my 17Mbit-ish ADSL isn't really fast enough to show speed slowdowns, I have noticed a much higher latency in the evenings.

In reply to a post by Fugitive_Legacy:

Edit: Also not sure how much it matters, but, when speaking to Zen if they have presence at your exchange can make a large difference in their ability to address congestion as you're directly connected to them.

I am on the BT network AFAIK (portal says "WBMC"). Zen has a presence in an exchange near mine, but it isn't the one my fibre connection comes from. It is interesting if people on both BT and Zen's backhaul are both affected.

In reply to a post by AndrewNi:

Watching this with some interest as although my 17Mbit-ish ADSL isn't really fast enough to show speed slowdowns, I have noticed a much higher latency in the evenings.

Do you see any speed drop at all? At its worst, I'm getting 4-5Mbps on single threads

Edited by deleted (Thu 11-Feb-16 13:16:31)

In reply to a post by Fugitive_Legacy:

Maybe it's this router which is causing the problem. It will be interesting to see the graph results from 8:30pm tonight

Very likely. See my thread which shows you exactly where the contention was occuring on the Zen network: http://forums.thinkbroadband.com/zen/f/4461556-packe...

Basically, looks like Zen have overloaded links and/or routers in their network.

Wonder if they have any plans to fix it?