Whats going on here Zen?

Connection has been terrible recently and before you jump on it's my line bandwagon, that has been perfect with no drops and error free with perfect max sync.

My Broadband Ping

Edited by lockyatlrg (Tue 13-Oct-15 22:20:12)

That doesn't mean it can't be your line... Lines develop faults... You should go through the usual things, then call Zen Support

Usual things include, but not necessarily limited to:
* Switch filter
* Check from master socket
* Check with different router

Hello,

That sounds frustrating. If you could please let me know your contact details and account details in a private message, I'll have a member of tech support get in touch.

Thank you,

Erin

My line is 80 meters long and brand new. If my line was that bad DLM would have chopped it down already.

still doesn't mean theres an intermittent fault somewhere!

EDIT: They said my line was brand new too, but turns out its only new for first 100metres then its been attached to some nasty old cable...

AKA.. how can you prove that "ALL" your line is new!

Edited by mlmclaren (Wed 14-Oct-15 09:34:18)

1) If that is the attitude you take with everyone why did you post here at all? Speak to Zen and they will want the basic checks done as have been suggested to you.

2) You might think everything your end is perfect and it "has" to be Zen but given your perfect
line I would be querying the stats you provide. My line is 140 meters and 20 years old, my pings on Zen FTTC are only 8ms ......

3) that TBB ping graph shows 2 line drops, they could be the result of power failures, modem and/or router faults or reboots or even BT/OR working at the cabinet.

ooo good spot, yes the BQM does seem to suggest Interleaving of some sort being applied to the line and can also confirm my Zen line of around 400 metres long and syncing right at the bottom end of speed expectancy also gets a ping of 7-8ms to BBC and other major locations

what happened to your sig?


can any of you guys supply a public live tbb? thanks.

In reply to a post by Chrysalis:

what happened to your sig?


can any of you guys supply a public live tbb? thanks.

Couldn't decide how it should look so binned it for now!

I can, here is one hosted in Maidenhead @ Rapidswitch and the ThinkBroadband Equivelent

I can also provide one hosted at A&A if required!

Please note that my connection is hosting a couple of servers and also streaming CCTV from two cameras consistently throughout the day so fair bit of "controlled" uploading going on!

The house is brand new, the estate is brand new, the BT cab is brand new and the E-side back to the exchange is brand new as they had to dig one up the roads to the exchange (not that it matters about the Eside). Interleave hasn't been applied and the jumps in ping are Zen as they are always messing with my routing. my lines goes from Derby to Manchester to London and that's the reason I get poor ping times. It used to be routed to London and I had 7ms but Zen won't budge on that.

The drop today is when I rebooted the modem today to move some lan cables.

For those that don't believe me...


============================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
Traffic Type: PTM Mode
Link Uptime: 0 day: 8 hours: 7 minutes
============================================================================
VDSL Port Details Upstream Downstream
Line Rate: 20.063 Mbps 79.998 Mbps
Actual Net Data Rate: 19.999 Mbps 79.999 Mbps
Trellis Coding: ON ON
SNR Margin: 15.4 dB 10.8 dB
Actual Delay: 0 ms 0 ms
Transmit Power: - 6.1 dBm 13.1 dBm
Receive Power: -17.2 dBm 3.7 dBm
Actual INP: 0.0 symbols 48.0 symbols
Total Attenuation: 10.9 dB 8.2 dB
Attainable Net Data Rate: 30.805 Mbps 102.039 Mbps
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 2.4 9.4 12.9 N/A 5.4 11.4 18.7
Signal Attenuation(dB): 2.4 8.4 12.1 N/A 6.7 11.2 18.7
SNR Margin(dB): 15.4 15.4 15.4 N/A 10.8 10.8 10.8
Transmit Power(dBm):-20.8 -34.2 - 6.3 N/A 9.7 7.8 7.0
============================================================================

VDSL Counters

Downstream Upstream
Since Link time = 7 min 23 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 7 min 51 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 8 hours 7 min 51 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Total time = 8 hours 7 min 51 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

Edited by lockyatlrg (Wed 14-Oct-15 17:11:32)

My Broadband Ping

Snap shot.

Edited by lockyatlrg (Wed 14-Oct-15 17:08:06)

I am not saying that it could not be Zen, but not far from here we have a brand new estate my friends live on, so new, houses are still being built. It is about 1km to the exchange and brand new lines have been laid to service the estate. There are numerous people complaining locally about the terrible line conditions on the estate, after months of denying it, it appears OR have changed their mind and now admit there is a fault, on a duct access point that had got accidently buried by the developers, has now collapsed and damaged a cable.

So new estates are certainly not immune to problems.

Well it's about 4 years old as I say not noticed anything odd on stats that get collected and during the event.

I'm almost sure that the reason for you routing via Manchester will be something to do with BT Wholesale!

Even if your one is brand new to the cab, the issues you describe could be intermittent...a break in a cable somewhere maybe, damage causing by water ingress, or potentially a fault with cabinet/DSLAM equipment!

Have you asked your neighbours if they have had any issues, and also have you checked your equipment!

I'm a Zen LLU customer.

You know what I'm not going to bother with it, my line will end soon as ive got this to use..

http://www.speedtest.net/my-result/4745799356

In reply to a post by mlmclaren:

I'm almost sure that the reason for you routing via Manchester will be something to do with BT Wholesale!

Zen terminate BT Wholesale traffic in London and Manchester. They also terminate LLU traffic in London and Manchester.

I live around 45 miles north of London. When I was on BT Wholesale, Zen terminated my traffic in Manchester, meaning latency to London had an extra 7-8ms for the trip to and from Manchester. When I was moved to LLU, Zen terminated the traffic in Manchester but more recently they switched to terminating traffic from my line (and presumably all other LLU lines on the same exchange) in London.


Unless it's changed, Zen's routes to the west (Ireland and North America) are lower latency from Manchester than London. This means that my latency to some US destinations increased slightly when my line was moved to termination in London.

London termination will always result in lower latency to London based servers, but it isn't always a good thing. Whilst low latency is nice, it is doubtful whether 7-8ms extra latency makes that much real world difference, especially if it does not add additional jitter.

In reply to a post by lockyatlrg:

I'm a Zen LLU customer.

Oh OK like me then,

I'm sorry then, I'm stumped at that one, I'm sure theres a reasonable reason for your traffic routing via Manchester instead of London though

In reply to a post by lockyatlrg:

You know what I'm not going to bother with it, my line will end soon as ive got this to use..

http://www.speedtest.net/my-result/4745799356

Is that your connection or you just pulled the test result from elsewhere?

In reply to a post by David_W:

In reply to a post by mlmclaren:

I'm almost sure that the reason for you routing via Manchester will be something to do with BT Wholesale!

Zen terminate BT Wholesale traffic in London and Manchester. They also terminate LLU traffic in London and Manchester.

I live around 45 miles north of London. When I was on BT Wholesale, Zen terminated my traffic in Manchester, meaning latency to London had an extra 7-8ms for the trip to and from Manchester. When I was moved to LLU, Zen terminated the traffic in Manchester but more recently they switched to terminating traffic from my line (and presumably all other LLU lines on the same exchange) in London.


Unless it's changed, Zen's routes to the west (Ireland and North America) are lower latency from Manchester than London. This means that my latency to some US destinations increased slightly when my line was moved to termination in London.

London termination will always result in lower latency to London based servers, but it isn't always a good thing. Whilst low latency is nice, it is doubtful whether 7-8ms extra latency makes that much real world difference, especially if it does not add additional jitter.

I would think connections routed via BT Wholesale would determine the quickest route and depending on utilisation levels on certain routes to this could well be the reason for heading north instead of south.

The extra 7-8ms shouldn't have much impact no or at least I wouldn't think so.

I found when I lived in Birmingham with my Virgin Media Cable, traffic for Grand Theft Auto Online on the Xbox 360 used to connect to servers west of the country and worked a HELL of a lot better even though they travelled across the atlantic, however now I live in the South East and traffic is routed to Europe via London the connections are very flakey/Busy!

So in some cases, being routed via Manchester is probably better in some cases, maybe avoiding major/busy backhauls for data centres in and around London.

It's my FTTH connection.

And you have FTTC Whhhy!