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Slow FTTC: Difference between revisions
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__NOTOC__
Things to do if you have '''slow FTTC''':
#Take a look at our [http://clueless.aa.net.uk/congestion.cgi Congestion Report] - see if it's a wider issue that AAISP are already aware of
#Go through the [[FTTC Checks]]
#Check the CQM Graphs, to see if it is slow due to lots of traffic
#If it is traffic related, then you can use the [[
#Contact Support
One of the issues with a fast internet connection is that you realise how slow some of the internet is. The Ethernet services we provide have no delays or congestion between you and high speed transit providers in our London data centre racks, so they are fast as you can get for a general internet connection. There are a few points to bear in mind when you have a fast internet link.
Speed tests sites can be busy anyway but most are not designed to measure speeds of lines much above that of broadband so if you have even a
TCP window. The way TCP works means that it has buffering for in-transit data. Even broadband links can have issues with these buffers not being big enough. Ethernet links are normally local meaning delays of micro seconds in traffic going from one machine to another. However, our Ethernet services work over the whole country and this takes milliseconds. A millisecond is not long, but it hundreds to thousands of times longer than you would find on a LAN. As such a data transfer on a high speed link can be limited by the buffering (TCP window size) on the computers at both ends. It is worth trying several transfers at the same time if you are trying to get the most total data transfer speed out of your link.
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