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    Router Freeze, Loss of Connection Possible Fix

    This is a discussion on Router Freeze, Loss of Connection Possible Fix within the Sky Router forums, part of the Sky Broadband help category; Originally Posted by bobbyashmoe what is a good NM level? The simple answer is the higher the better. Almost everyone ...

    1. #161
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      Quote Originally Posted by bobbyashmoe View Post
      what is a good NM level?
      The simple answer is the higher the better.

      Almost everyone will see a noise margin of ~7db immediately after syncing the router with the exchange. This is because the router is set to connect at the highest possible speed with a noise margin of 6.9db or greater.

      However noise conditions change through the day and if noise increases then this pushes the noise margin down. Rebooting the router will again cause it to sync at 6.9db. If you repeatedly do this then you will in effect "lock" your router to a noise margin which will never drop below ~6.9db - or you can use a utility to adjust the noise margin directly.

      So to get to the point, a "good" noise margin is one that can cope with the normal fluctuations through the day. Dropping below ~6.2db will cause connection problems.

      If you haven't already found it then this post gives some background.


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    3. #162
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      Re: Router Freeze, Loss of Connection Possible Fix

      It's probably irrelavant but my NM is 20.8 with the Netgear on F2S and I am 3Km from the exchange on 2MB fixed speed.

      J

    4. #163
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      Re: Router Freeze, Loss of Connection Possible Fix

      Is this a problem with the netgear router? I have been using a speedtouch for a couple of years with current ISP, Demon, and leave it on all the time no loss of speeds when tested. I have a dedicated ADSL socket fitted by BT when first moved to BB, do not need to have filters.
      As an aside my company have supplied the netgear DG632 on a BB VPN and this is also left on.

      Home network is ethernet to desktop and wireless 2nd PC.

    5. #164
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      Re: Router Freeze, Loss of Connection Possible Fix

      Mines just lost connection again when trying to post this message

      It happens every night when im playing on Xbox live, i always have to reset my router at somepoint during the night and its a nightmare to do when ur hosting a full room.

      I tried using another router which stopped all the disconnections and resetting the only problem was it cut my speeds in half.

      Does anyone have any ideas for the netgear? im not even using wireless so its even more annoying

    6. #165
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      Re: Router Freeze, Loss of Connection Possible Fix

      I know it breaks Sky's T&C's but I dumped the Netgear a long time ago because if the hassles with it. I now use a Speedtouch 585iV6, great router.

      My line is at 63.5db downstream with a noise margin hovering between 5db and 7.5db with 2848kbps sync speed, the router very rarely drops, I just used a tool called DMT to get my noise margin to the point where it wouldn't drop. Considering my line length my speed is pretty damm good when you consider at one point I wasn't even allowed a 0.5Mbps from BT a few years back!

      You can pick a reconditioned Speedtouch 585iV6 up for around 30 inc delivery, not sure if allowed to advertise the site, so if you want to know PM me and I'll respond.

    7. #166
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      Re: Router Freeze, Loss of Connection Possible Fix

      Quote Originally Posted by boab2791 View Post
      My line is at 63.5db downstream with a noise margin hovering between 5db and 7.5db with 2848kbps sync speed, the router very rarely drops.
      All

      I'm feeling a little guilty - I have been hassling Sky because I have , using the Netgear box, 6080kbps downstream and 736 kbps upstream and NM 7.0

      My argument is that my line is rated at supporting upto 14000kbps and I am paying for a max tariff - so why am I getting less than half of the downstream rate (I know you will never achieve 100%).

      Also, it is constantly on, downloading, yet the modem freezes every 24 hours or shorter - I NEVER got that with BT - so is the problem the crap router or the broadband service??

      any comment appreciated - or pointers - or better routers...

    8. #167
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      Re: Router Freeze, Loss of Connection Possible Fix

      Many thanks DingDong. My connection is now much more stable than before. It's still crap compared to my previous ISP (F2S) but at least it's usable now. Only drops connection about 2 or 3 times a night now.

    9. #168
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      Smile Re: Router Freeze, Loss of Connection Possible Fix

      Hi dingdong,
      I did your step by step instructions to increase reliability and disconnection issues.
      I did speed tests for around an hour and then did a reboot of my connection i found the connection speed to at 4mbps instead of the usual 7mbps.
      As usually when the connection is at 7mbps the connection can be unstable and disconnect every half hour which can be annoying and fustrating.
      Where as this has helped the reliablity and the disconnection issues.
      Thanks very much.
      I was just wondering i have read about speed capping the speed of connections, as i find our connection is alot more reliable at 5mpbs, where as when its higher then this it falls over.
      I was wondering if sky are pushing our exchange to its limits as we only live in a small town and when we were with orange they told as the maximum speed we could get in our area was 2mbps.
      we are on the broadband max connection which can get speeds up to 16mbps.
      These are the statistics of our router after i did the speed tests and the reboot.

      System Up Time 00:16:37
      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 109 120 0 206 459 00:02:41
      LAN 10M/100M 4248 2492 0 1618 375 00:16:35
      WLAN 11M/54M 1523 0 0 65 0 00:16:32


      ADSL Link Downstream Upstream
      Connection Speed 6752 kbps 768 kbps
      Line Attenuation 43.0 db 27.0 db
      Noise Margin 7.1 db 13.0 db

      To what i have read these seem to be ok.
      Thanks again for your help and if you could get back to me that would be great

    10. #169
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      Re: Router Freeze, Loss of Connection Possible Fix

      thanks dingdong - i had problems with my router freezing and loss of connection ever since i had skybb installed on the 27th but after doing the upnp and auto108 change on the router my connection has remained rock steady for the last 3 days.

      my stats are...

      ADSL Link Downstream Upstream
      Connection Speed 15323 kbps 764 kbps
      Line Attenuation 6.5 db 4.1 db
      Noise Margin 15.4 db 11.0

      i'm only 80m from the exchange so i'm getting near on 16mb contantly throughout the day.

      btw. i didn't have to do the reboot procedure at all infact after applying the upnp and auto108 settings the routers been fine.

      thanks again.
      Last edited by k690bpp; 03-02-07 at 06:10 PM.

    11. #170
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      Re: Router Freeze, Loss of Connection Possible Fix

      Yates, re Orange only going to 2meg. They don't resell anything above 2meg so if they haven't unbundled your exchange they won't offer you any more speed than that cos they won't pay BT for more than that.


      I'm on my second router and I've only been connected for 1 1/2 weeks. Can usually only get 15-20mins between reboots. Switched off the UPnP and will wait and see if the router stays on its feet. Then I'll need to get Sky to lift the cap they put on my line and see what she can really do. Being limitted to 7meg at the min but NM is at 13-14dB so should manage a lot more without falling over.
      Last edited by 1AlanM; 08-02-07 at 12:00 AM.

     

     
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