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    Problems loading some sites but not others?

    This is a discussion on Problems loading some sites but not others? within the Sky Broadband help forums, part of the Sky Broadband help and support category; Well I can't get to any of the sites Satuday mentioned, plus ebay never fully loads. However it was working ...

    1. #21
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      Re: Problems loading some sites but not others?

      Well I can't get to any of the sites Satuday mentioned, plus ebay never fully loads. However it was working O.K. for me last night when jonathan_d opened the thread.

      Question for James67. How is it you havn't been affected if it is peering as you say?


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    3. #22
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      Re: Problems loading some sites but not others?

      Myspace seems to half load very slowly, but most of the images don't load. Bebo loads very slowly.

      Everything else seems to be perfectly normal.

      Anyone else with this problem. I'm in Wokingham.

    4. #23
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      Re: Problems loading some sites but not others?

      Quote Originally Posted by moleman View Post
      Question for James67. How is it you havn't been affected if it is peering as you say?
      Sky has over a 1000 LLU'd exchanges, plus it has the connection from the BT network (used by Connect customers). They don't all funnel into a single router - there'll be a whole bank of routers. If there are two potential routes to, for example, eBay, you'll get a situation where people on some exchanges will be going through one route to get there, while others will be going through the other route.

      Now, if one of the routes fails, it'll take time for the routers which had been using that route to get the updated routing information. How quickly that happens depends on the amount of traffic and the load on the routers. This is why I said that there's not much point in complaining to Sky, because by the time the point of failure is identified, the routers will probably have been updated automatically to use the new route.

    5. #24
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      Re: Problems loading some sites but not others?

      Yep i'm having the same problems, facebook aint loading either, have sky officially said anything about this problem?

    6. #25
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      Re: Problems loading some sites but not others?

      Quote Originally Posted by James67 View Post
      Sky has over a 1000 LLU'd exchanges, plus it has the connection from the BT network (used by Connect customers). They don't all funnel into a single router - there'll be a whole bank of routers. If there are two potential routes to, for example, eBay, you'll get a situation where people on some exchanges will be going through one route to get there, while others will be going through the other route.

      Now, if one of the routes fails, it'll take time for the routers which had been using that route to get the updated routing information. How quickly that happens depends on the amount of traffic and the load on the routers. This is why I said that there's not much point in complaining to Sky, because by the time the point of failure is identified, the routers will probably have been updated automatically to use the new route.
      Thanks James, we'll just have to wait for it to sort itself out then.

    7. #26
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      Re: Problems loading some sites but not others?

      Quote Originally Posted by James67 View Post
      It's not a DNS issue, it's a routing issue.
      Well it is at least in part a DNS issue. Maybe there are two things going on coincidentally though it looks primarily a DNS issue to me?

      Having found that various sites have been fine then problematical, fine then problematical continuously over the last few hours, I've just tried an experiment.

      I have in front of me a PC set to use OpenDNS and a laptop set to use Sky's DNS. If I fire off a request on both simultaneously then the laptop is fine whereas the PC is finding some sites very slow or images are not loading. Both have had their caches emptied (browser and DNS) and were rebooted before I tried this.

      OPenDNS's status page is currently showing no problem nor is Easynet's.

    8. #27
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      Re: Problems loading some sites but not others?

      Well, your DNS lookups with OpenDNS need to be routed as well. Doing a traceroute to www.opendns.com shows that it's being routed through ntt.net, which seems to be where the routing problems to other sites are too.

    9. #28
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      Re: Problems loading some sites but not others?

      LOL - I knew that would be your response.

      Well, maybe we can agree that it may be a routing problem at heart but one that seems to be affecting OpenDNS in particular. The "problem" sites may well have routing via ntt.net but that is so whether using OpenDNS or Sky DNS. Only the former is experiencing this problem (at least in my experience).

    10. #29
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      Re: Problems loading some sites but not others?

      I am still having problems, whether I use opendns or sky's.

      Yahoo, myspace, dell and microsoft fail to load, or just display basic text with no css or images.

      Another site that doesn't work is threadless.com, the images on here should load from media.threadless.com but fail too.

      Amazon and the bbc work fine.

      For the people where it is working again, what DNS servers appear in your router diagnostics page?

      The one's in mine are 90.207.238.97 and 87.86.189.16

      I imagine Sky have different one's around the country, so it would be worth trying some more.

      Cheers

    11. #30
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      Re: Problems loading some sites but not others?

      Im having problems with paypal too

     

     
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