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    FTTC connection goes down every 12-14 days for ~30 mins

    This is a discussion on FTTC connection goes down every 12-14 days for ~30 mins within the Sky Broadband (Fibre) Help forums, part of the Sky Broadband help and support category; Been having issues with FTTC (Sky Fibre Pro) going down for about 30 mins every 12 - 14 days. When ...

    1. #1
      techy007's Avatar
      techy007 is offline Sky User Member
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      FTTC connection goes down every 12-14 days for ~30 mins

      Been having issues with FTTC (Sky Fibre Pro) going down for about 30 mins every 12 - 14 days. When it goes down I find I have dial tone, but router (sky hub black version) keeps training. Orange light will flash forabout 2 secs then go off for 10 secs or so, keeps doing this for about 30 mins, then comes back up although I notice each time I'm losing about 40-50kbps

      Stats from today

      Broadband Link Downstream Upstream
      Connection Speed 79999 kbps 15606 kbps
      Line Attenuation 20.2 dB 0.0 dB
      Noise Margin 6.6 dB 5.5 dB

      Extract from logs

      Jan 18 22:09:47 syslog: System time is up to date
      Jan 18 22:29:54 syslog: [3945759.990000] Line 0: VDSL2 link down
      Jan 18 22:29:56 syslog: Clear IP addresses. IP connection DOWN.
      Jan 18 22:31:02 syslog: [3945828.431000] Line 0: xDSL G.994 training
      Jan 18 22:31:09 syslog: [3945835.434000] Line 0: VDSL2 link down
      Jan 18 22:31:12 syslog: [3945838.437000] Line 0: xDSL G.994 training
      Jan 18 22:31:27 syslog: [3945853.440000] Line 0: VDSL G.993 started
      Jan 18 22:31:35 syslog: [3945861.453000] Line 0: VDSL2 link down
      Jan 18 22:32:39 syslog: [3945925.459000] Line 0: xDSL G.994 training
      Jan 18 22:32:42 syslog: [3945928.462000] Line 0: VDSL2 link down
      Jan 18 22:32:58 syslog: [3945944.471000] Line 0: xDSL G.994 training
      Jan 18 22:33:06 syslog: [3945952.478000] Line 0: VDSL2 link down
      Jan 18 22:33:16 syslog: [3945962.484000] Line 0: xDSL G.994 training
      Jan 18 22:33:19 syslog: [3945965.489000] Line 0: VDSL2 link down
      Jan 18 22:34:34 syslog: [3946040.508000] Line 0: xDSL G.994 training
      Jan 18 22:34:38 syslog: [3946044.511000] Line 0: VDSL2 link down
      Jan 18 22:34:40 syslog: [3946046.514000] Line 0: xDSL G.994 training
      Jan 18 22:34:45 syslog: [3946051.517000] Line 0: VDSL2 link down
      Jan 18 22:34:48 syslog: [3946054.520000] Line 0: xDSL G.994 training
      Jan 18 22:35:01 syslog: [3946067.523000] Line 0: VDSL2 link down
      Jan 18 22:35:02 syslog: [3946068.526000] Line 0: ADSL G.992 started
      Jan 18 22:35:04 syslog: [3946070.537000] Line 0: ADSL link down
      Jan 18 22:35:06 syslog: [3946071.540000] Line 0: ADSL G.992 started
      Jan 18 22:35:09 syslog: [3946074.553000] Line 0: ADSL link down

      This continued until

      Jan 18 22:57:24 syslog: [3947409.803000] Line 0: ADSL link down
      Jan 18 22:57:27 syslog: [3947412.806000] Line 0: ADSL G.992 started
      Jan 18 22:57:29 syslog: [3947414.817000] Line 0: ADSL link down
      Jan 18 22:57:33 syslog: [3947418.820000] Line 0: xDSL G.994 training
      Jan 18 22:57:47 syslog: [3947432.823000] Line 0: VDSL G.993 started
      Jan 18 23:00:23 syslog: [3947588.923000] Line 0: VDSL2 link up, Bearer 0, us=15606, ds=79999
      Jan 18 23:00:23 syslog: [3947588.929000] Line 0: VDSL2 link up, Bearer 1, us=0, ds=0
      Jan 18 23:01:30 syslog: ptm0.1 - WAN link UP.
      Jan 18 23:01:30 syslog: Received valid DHCP lease from server. Connection UP.
      Jan 18 23:01:30 syslog: Connection Up. SNO/MAC/IP/SWVER: [A530173D012154/1234567890AB/176.xxx.yyy.zzz/2.91.2110.R]
      Jan 18 23:32:36 syslog: Lease renewed 3600 ip 176.xxx.yyy.zzz
      Jan 18 23:59:18 syslog: Lease renewed 3600 ip 176.xxx.yyy.zzz


      Line tests show all clear from Sky, of course they are shut when it fails so can't get them to test in failed condition.

      Any one have ideas. Have new NTE5C and tested in test socket with no difference.
      Attached Files Attached Files


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    3. #2
      skyeci's Avatar
      skyeci is offline Sky User Member
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      Re: FTTC connection goes down every 12-14 days for ~30 mins

      wow. you are very lucky to get a sync of 79mb considering your attenuation is 20 (long line). I guess your cab has a low take up of subscribers and or possibly g.inp /vectoring . Do you know your cab type?

      If you are using the sr102 which will work in wanoe mode you could get a simple modem like a hg612 and put that in front of the sky hub. Even if you are not into gathering stats from the modem you could prove if the sr102 was faulty or not.
      Last edited by skyeci; 21-01-18 at 09:24 AM.
      zyxel VMG3925 (bridge mode)
      Qotom i5 Opnsense with IPV6 now Zen ex Sky fibre pro
      Asus RT-AC88U - as wap

      ECI CAB- G.INP disabled 8th April 2016


      click for ECI VDSL line stats by pi3

      click for Huawei VDSL line stats by pi3

    4. #3
      Shonk's Avatar
      Shonk is offline Sky User Member
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      Re: FTTC connection goes down every 12-14 days for ~30 mins

      Mine goes down about once a month
      the VDSL doesnt resync though and stays connected the whole time

      Sky seem to mess with the dhcp server at midnight every few weeks lasting a few mins to 30mins
      its actually super annoying

      there's no reason for them to mess with the dhcp server so often

      maybe sky router's actually drop the vdsl link when this happens in an effort to get an ip

     

     

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