A framework for IP based virtual private networks

This document describes a framework for Virtual Private Networks (VPNs) running across IP backbones. It discusses the various different types of VPNs, their respective requirements, and proposes specific mechanisms that could be used to implement each type of VPN using existing or proposed specifications. The objective of this document is to serve as a framework for related protocol development in order to develop the full set of specifications required for widespread deployment of interoperable VPN solutions

On Performance Bounds for the Integration of Elastic and Adaptive Streaming Flows

International audienceWe consider a network model where bandwidth is fairly shared by a dynamic number of elastic and adaptive streaming flows.Elastic flows correspond to data transferts while adaptive streaming flows correspond to audio/video applications with variable rate codecs.In particular, the former are characterized by a fixed size (in bits) while the latter are characterized by a fixed duration.This flow-level model turns out to be intractable in general. In this paper, we give performance bounds for both elastic and streaming traffic by means of sample-path arguments. These bounds present the practical interest of being insensitive totraffic characteristics like the distribution of elastic flo size and streaming flow duration