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    Upstream attenuation halved?

    This is a discussion on Upstream attenuation halved? within the Sky Broadband help forums, part of the Sky Broadband help and support category; Many thanks for your input snadge. This attenuation thing certainly is a head scratcher, but already you've found more info ...

    1. #11
      gymno's Avatar
      gymno Guest
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      Re: Upstream attenuation halved?

      Many thanks for your input snadge.
      This attenuation thing certainly is a head scratcher, but already you've found more info on it than i could after hours of searching.

      I checked my pings at 11pm last night & they were/are back to normal, so the hike lasted less than 48hrs.

      Something's definitely going on with my line though, as my WAN uptime indicates i had a re-sync at 5:55 a.m. this morning. System uptime remains unchanged so wasn't a power cut. I guess it could be DLM but would expect that to re-sync around 3 a.m. Plus i have the same stats as before, complete with the 8.0db upstream attenuation, so i doubt it.

      TBH, the only thing that's actually annoying me at the mo is the routers really slow GUI.
      I know it's something that every user (apart from me, apparently) seems to have always had, but it only started after i DMZ'd my ps3.

      Is it normal for it to slow down after making just 1 little change like that?

      Also, i disabled UPNP on the ps3, thinking it could only interfere with the DMZ settings. Does anyone know if there's a general consensus this? Probably a noob question, but i assume UPNP needs to be left enabled on the router?


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    3. #12
      snadge's Avatar
      snadge is offline Sky User Member
      Exchange: Blaydon
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      Re: Upstream attenuation halved?

      unfamiliar with PS3 etc, I dont even know what DMZ is or means?-?-?-? lol

      BUT , having googled it I now know, your basically manually assigning an IP to the PS3 and putting that IP into DMZ in router which allows open access to it - bit like opening a port on a firewall I suppose..?!?

      if the routers GUI is slow after connecting your PS3 then it sounds like the settings maybe incorrect or there is a lot of traffic to/from router/s3 as your trying to access it
      - Hardware - Netgear DG834Nv1
      - Line Attenuation - 27.5db
      - Sync Rate - 17,600k
      - Noise Margin - 7db
      - Latency - 28ms

    4. #13
      NilSatisOptimum's Avatar
      NilSatisOptimum is offline Sky User Member
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      Re: Upstream attenuation halved?

      I too have wobbly up attenuation, between 18db-33db and anything in between to date, 29db after re-sync today , SNR always bang on 10 and pumps out 800kbps!

    5. #14
      gymno's Avatar
      gymno Guest
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      Re: Upstream attenuation halved?

      So after 3 days with my pings back to the 24ms i've always been used to, i now have this

      PING 212.58.241.131 (212.58.241.131): 56 data bytes
      56 bytes from 212.58.241.131: icmp_seq=0 ttl=247 time=43.9 ms
      56 bytes from 212.58.241.131: icmp_seq=1 ttl=247 time=51.5 ms
      56 bytes from 212.58.241.131: icmp_seq=2 ttl=247 time=45.9 ms
      56 bytes from 212.58.241.131: icmp_seq=3 ttl=247 time=48.9 ms

      5 seconds later & it's this:

      PING 212.58.241.131 (212.58.241.131): 56 data bytes
      56 bytes from 212.58.241.131: icmp_seq=0 ttl=247 time=28.0 ms
      56 bytes from 212.58.241.131: icmp_seq=1 ttl=247 time=33.2 ms
      56 bytes from 212.58.241.131: icmp_seq=2 ttl=247 time=25.4 ms
      56 bytes from 212.58.241.131: icmp_seq=3 ttl=247 time=26.9 ms.

      Could it really be a backhaul problem?

    6. #15
      gymno's Avatar
      gymno Guest
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      Re: Upstream attenuation halved?

      OMG.
      I've never had anything like this before

      PING 173.194.34.166 (173.194.34.166): 56 data bytes
      56 bytes from 173.194.34.166: icmp_seq=0 ttl=58 time=118.3 ms
      56 bytes from 173.194.34.166: icmp_seq=1 ttl=58 time=124.3 ms
      56 bytes from 173.194.34.166: icmp_seq=2 ttl=58 time=118.2 ms
      56 bytes from 173.194.34.166: icmp_seq=3 ttl=58 time=130.8 ms

      That was google.com.
      It's the same at bbc.co.uk aswell now. 97ms - 117ms

      ADSL Link Downstream Upstream
      Connection Speed 19999*kbps 1175*kbps
      Line Attenuation 23.0*dB 8.0*dB
      Noise Margin 6.7*dB 9.4*dB

      - - - Updated - - -
      Last edited by gymno; 20-08-12 at 10:27 PM. Reason: removed double post

    7. #16
      gymno's Avatar
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      Re: Upstream attenuation halved?

      LOL

      PING 212.58.241.131 (212.58.241.131): 56 data bytes
      56 bytes from 212.58.241.131: icmp_seq=0 ttl=247 time=113.4 ms
      56 bytes from 212.58.241.131: icmp_seq=1 ttl=247 time=429496595.1 ms
      56 bytes from 212.58.241.131: icmp_seq=2 ttl=247 time=120.6 ms
      56 bytes from 212.58.241.131: icmp_seq=3 ttl=247 time=121.2 ms

      --- 212.58.241.131 ping statistics ---
      4 packets transmitted, 4 packets received, 0% packet loss
      round-trip min/avg/max = 113.4/55.1/429496595.1 ms

      Where did it get the avg 55.1 from?
      Do i have a faulty router?
      Has anyone ever seen anything like this?

      In the last 3 months, i've managed to get 16 good days out of my broadband.
      I honestly don't know what to do now

    8. #17
      Isitme's Avatar
      Isitme is offline Sky User Moderator
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      Re: Upstream attenuation halved?

      Something wrong with the arithmetic somewhere -
      Minimum 113.4
      Maximum 429496595.1
      Average 55.1 ?????
      Maybe it was so fed up it could not be bothered calculating it.

      It looks like even after all you have gone through there is still a fault on your line

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      http://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    9. #18
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      Re: Upstream attenuation halved?

      Back to this now

      PING 212.58.241.131 (212.58.241.131): 56 data bytes
      56 bytes from 212.58.241.131: icmp_seq=0 ttl=247 time=24.4 ms
      56 bytes from 212.58.241.131: icmp_seq=1 ttl=247 time=25.4 ms
      56 bytes from 212.58.241.131: icmp_seq=2 ttl=247 time=24.9 ms
      56 bytes from 212.58.241.131: icmp_seq=3 ttl=247 time=25.2 ms

      --- 212.58.241.131 ping statistics ---
      4 packets transmitted, 4 packets received, 0% packet loss
      round-trip min/avg/max = 24.4/24.9/25.4 ms

      I'll have to give sky a call tomorrow *sigh*

      Any advice before i do?
      I've no pc here, just my ps3 so can't provide traceroutes or talk to them about hops etc.
      (i prefer a crisp lager anyway)
      Can CST do things like ping my ip address & look for bottlenecks or anything?
      Without a pc, i can see this one being a bit tricky...

    10. #19
      Isitme's Avatar
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      Re: Upstream attenuation halved?

      I honestly don't know how accurate this is or if it will help, but might want to try this site - Networktools: Reverse IP Lookup, Whois, Ping, RBL Check, DNS Records, Traceroute, Host information

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      http://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    11. #20
      gymno's Avatar
      gymno Guest
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      Re: Upstream attenuation halved?

      Thanks isitme.
      Unfortunately, i was advised by flamey on the sky forum many moons ago that reverse trace takes a different route & so shouldn't be used for that kind of thing.

      Still, i've been going to a similar site though, just to be nosy, whenever i've had an ip change:
      Traceroute, Ping, Domain Name Server (DNS) Lookup, WHOIS

      I'll post the results from both sites when i get the chance.
      Cheers.

     

     
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