With P2P live video streaming, buddies seeing video likewise support the server in streaming the videos, hence substantially reducing server facilities expenditure. In current years, there have actually manied massive-scale releases of P2P live film programs for instance, PPstream has 350 million downloads, about 12 million energetic customers every working day, and numerous channels. These P2P streaming programs have a number of primary performance problems consisting of considerable channel changing hold-ups, extended playback lags, and weak general efficiency for less typical channels. We recommend a brand-new cross-channel P2P streaming structure, called Appearance at-Add Decoupling (VUD). VUD strictly decouples peer downloading from publishing, bringing steadiness to multichannel programs and making it possible for cross-channel resource sharing. We recommend a developed of peer task and bandwidth allotment algorithms to properly arrangement bandwidth in between channels, and present sub-stream swarming to decrease the bandwidth overhead. We examine the performance of VUD using simulations and a PlanetLab execution. In the Second part of the chat, we show the number of channel P2P programs can be designed by product-form stochastic designs. We use the product-sort theory to the 2 routine separated channel gadgets and VUD designs. Utilizing the classical idea of products-form networks, we plainly demonstrate how to establish effective algorithms to figure out efficiency actions, the best ways to obtain principles-of-thumb by utilizing asymptotic evaluation, the best ways to achieve the perfect measurement of the VUD groups in an asymptotic setting, and the best ways to boost the VUD groups for fair help for modest and huge channels. This Second part of the interact is a summary of the Infocom 2009 perfect paper award. This get the job done is joint run with Yong Liu and Di Wu of Polytechnic Institute of NYU.