Quote:
Originally Posted by azraelomega
Broadbandings,
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Hi,
Simple tests to see how things are running.
First try a nice traceroute or two to
www.virginmedia.com
Then try a ping -n 100
www.virginmedia.com and see how that goes.
Also try the VM speedtest on your upstream and see how you score, go to
http://www.vmpilot.net/ and use whichever one is nearest to you.
Should explain if the issue is with packet loss or saturation.
Other areas in the country use the 16QAM modulation upstream, which provides twice the bandwidth at 8.8Mbit. The standards go as far as a usable 27.2Mbit/s per upstream, some 6 times the performance of the upstream you appear to be connected to.
---------- Post added at 20:00 ---------- Previous post was at 19:57 ----------
Quote:
Originally Posted by General Maximus
that is the problem, it is shocking when you look at it. There is another post somewhere he has made (cant remember what about) where he worked out one line or something was 37mbit and you multiplied that by 4 and each ubr was 158mbits or something like that and you think "omg, that is only 8 people on 20mbits on an entire ubr" (I have probably got all of this wrong) but their arguement is that they can get away with it because most ubrs are only at 70% peak load which means they have got more than enough bandwidth. They would only have a problem if everyone tried to use their connect at the same time which is obviously what happens a lot of the time and you get everyone moaning they are only receiving 1mbit on their 20mbit connection.
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Each area has 1 or 2 38Mbit channels usually. For whatever reason while some areas of the network can run on 51Mbit channels they tend not to.
2 20Mbit customers in the same area, usually around 400 customers per 38Mbit, will saturate.
It's contention, and in most cases it works ok.