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Zen, speed

edited 30 November -1 at 1:00AM in Broadband & Internet Access
10 replies 1.1K views
SterlingtimesSterlingtimes Forumite
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edited 30 November -1 at 1:00AM in Broadband & Internet Access
My ISP is Zen.

My connection speed as shown by accessing the router is ALWAYS as follows:

connected↓ 80,0 Mbit/s↑ 20,0 Mbit/s

My actual speed had been going downwards by steps over time. See graph below.

It is not internal wiring since I have tested directly into the master socket.

Please, can anyone tell me why these step changes occur?

zen_speed.jpg
.
Solar installed 21 November 2014 > Centre of England > 3,780 Wp > 14 *270 Watt Trina panels > 14 * Enphase micro-inverters > managed by Enlighten Envoy Hub > 19° west of south > 35° pitch > tree shading to east > iBoost > Wattson Anywhere monitoring > Schneider Electric (Drayton) MiGenie smart thermostat.

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  • unforeseenunforeseen Forumite
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    It looks like your line is seeing a lot of problems so the automatic systems are dropping your speed in an effort to provide a stable connection.
  • [Deleted User][Deleted User] Forumite
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    My ISP is Zen.

    My connection speed as shown by accessing the router is ALWAYS as follows:

    connected↓ 80,0 Mbit/s↑ 20,0 Mbit/s

    My actual speed had been going downwards by steps over time. See graph below.

    It is not internal wiring since I have tested directly into the master socket.

    Please, can anyone tell me why these step changes occur?

    zen_speed.jpg
    .

    Is your 'actual speed' tested wired to the router or using WiFi? I'm presuming you have rebooted the router at some point?
  • SterlingtimesSterlingtimes Forumite
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    Thank you, Colin. Yes, I am connecting by ethernet, I have rebooted my router and I have plugged into the master socket. I used to see variability in connection speed, but now I am ALWAYS connected at 80 exactly. Is the loss of speed caused by the Zen or Open Reach components of the network?
    Solar installed 21 November 2014 > Centre of England > 3,780 Wp > 14 *270 Watt Trina panels > 14 * Enphase micro-inverters > managed by Enlighten Envoy Hub > 19° west of south > 35° pitch > tree shading to east > iBoost > Wattson Anywhere monitoring > Schneider Electric (Drayton) MiGenie smart thermostat.
  • edited 20 August 2019 at 12:11PM
    SterlingtimesSterlingtimes Forumite
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    edited 20 August 2019 at 12:11PM
    Thank you, unforeseen. Why does my connection speed (always 80) not drop?

    zen_picture.jpg
    Solar installed 21 November 2014 > Centre of England > 3,780 Wp > 14 *270 Watt Trina panels > 14 * Enphase micro-inverters > managed by Enlighten Envoy Hub > 19° west of south > 35° pitch > tree shading to east > iBoost > Wattson Anywhere monitoring > Schneider Electric (Drayton) MiGenie smart thermostat.
  • Mister_GMister_G Forumite
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    Is your line clean? Have you tried dialling 17070 option 2 "Quiet Line Test". If there are any pops or crackles then these can affect the speed. This is best done from a hard wired phone rather than a wireless one.

    The drops shown on your graph do tend to indicate that the line is not very stable.
  • RetrogamerRetrogamer Forumite
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    Your sync speed, which is your raw connection speed is the speed measured between the router and the external equipment (DSLAM normally) is static at the full package 80/20mbps which indicates the line and raw connection are fine.

    When you are doing the speed tests you are monitoring the throughput speed which can vary depending on various things.

    The only accurate way to measure throughput is ensure only 1 device is connected to the router, via ethernet (turn off wireless on the router)
    Boot the device into safe mode with networking if windows, and the MAC variant if MAC OS

    This ensures there are no other devices on the internet network or other programmes running in the background of the device that might skew the throughput speed test results.
    All your base are belong to us.
  • SterlingtimesSterlingtimes Forumite
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    Retrogamer wrote: »
    Your sync speed, which is your raw connection speed is the speed measured between the router and the external equipment (DSLAM normally) is static at the full package 80/20mbps which indicates the line and raw connection are fine.

    When you are doing the speed tests you are monitoring the throughput speed which can vary depending on various things.

    The only accurate way to measure throughput is ensure only 1 device is connected to the router, via ethernet (turn off wireless on the router)
    Boot the device into safe mode with networking if windows, and the MAC variant if MAC OS

    This ensures there are no other devices on the internet network or other programmes running in the background of the device that might skew the throughput speed test results.

    Thank you. I have followed your advice to the letter and I typically get a download speed of 68 but it can be lower. The router used to show connection speeds which would vary from time to time but now 80 is always indicated. When I run diagnostics with the Openreach speed checker, an "IP profile" is indicated of an unvarying 70.4. The router itself does not show the IP profile. I think that over time my line has become less good, but does this decline lie entirely within Openreache's domain or is Zen contributory?
    Solar installed 21 November 2014 > Centre of England > 3,780 Wp > 14 *270 Watt Trina panels > 14 * Enphase micro-inverters > managed by Enlighten Envoy Hub > 19° west of south > 35° pitch > tree shading to east > iBoost > Wattson Anywhere monitoring > Schneider Electric (Drayton) MiGenie smart thermostat.
  • wongataawongataa Forumite
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    Your ISP has nothing to do with the line from your house to the exchange as that is under the control of Openreach.
  • RetrogamerRetrogamer Forumite
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    Thank you. I have followed your advice to the letter and I typically get a download speed of 68 but it can be lower. The router used to show connection speeds which would vary from time to time but now 80 is always indicated. When I run diagnostics with the Openreach speed checker, an "IP profile" is indicated of an unvarying 70.4. The router itself does not show the IP profile. I think that over time my line has become less good, but does this decline lie entirely within Openreache's domain or is Zen contributory?

    That's fine i would say.

    As long as your throughput speed is within 70% of your sync rate, then it would be deemed normal and acceptable.
    You are currently getting throughput speeds of approx 85% your sync rate

    58Mbps is the lowest acceptable speed test when doing it via sites.

    The IP profile is the maximum speed you will achieve on speed tests.

    Although your router is connected at 80Mbps, the throughput speed has been capped (that's your IP profile) possible to ensure the connection remains stable and reliable.
    Interleaving and error correction can lower the IP profile a little but that's out of your control.
    All your base are belong to us.
  • SterlingtimesSterlingtimes Forumite
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    Thank you, Retrogamer, for your kindness in explaining this to me. It seems that I can monitor the picture best by deriving the IP Profile from the Openreach site. Certainly, performance has been falling over time.
    Solar installed 21 November 2014 > Centre of England > 3,780 Wp > 14 *270 Watt Trina panels > 14 * Enphase micro-inverters > managed by Enlighten Envoy Hub > 19° west of south > 35° pitch > tree shading to east > iBoost > Wattson Anywhere monitoring > Schneider Electric (Drayton) MiGenie smart thermostat.
This discussion has been closed.
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