VM claims that the new “smart” system has been designed to adapt to network conditions (i.e. heavy peak time network load) and ensure that normal surfing, including video streams from YouTube and BBC iPlayer, remain unaffected by P2P (i.e. Limewire, Gnutella, BitTorrent) and Newsgroup (Usenet) services. In other words, P2P will be slowed.
The system will reserve at least 75% of network resources for time-sensitive traffic, adjusting dynamically to overall network usage to ensure consistent performance for more customers. In compensation Virgin Media has also increased its peak time allowances for data transfer.
Virgin Media Traffic Management Policy
Most of the big ISPs already restrict traffic to P2P at peak times. However Virgin Media will need to be careful and must make exceptions for applications that use P2P as part of their critical service.
For example, many online games (XBox Live, Steam, World of Warcraft etc.) make use of P2P and any restrictions on these can make those services and platforms unusable. However most P2P restricting UK ISPs do recognise this and make allowances in their filters.
As a side note, customers on Virgin Media’s 50Mbps package will now also find their P2P traffic restricted. In addition, during peak (10am – 3pm and 4pm – 9pm) times, Virgin will slow the new 5Mbps upload speeds down to 1.75Mbps, if your upload usage is particularly high. Sneaky.
Full article: http://www.ispreview.co.uk/story/2010/09/30/virgin-media-uk-boost-broadband-upload-speed-and-tightens-traffic-management.html