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Description:
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Next Generation IP-based Networks will offer Quality of\r\nService (QoS) guarantees by deploying technologies such as\r\nDifferentiated Services (DiffServ) and Multi-Protocol Label Switching\r\n(MPLS) for traffic engineering and network-wide resource management.\r\nDespite the progress already made, a number of issues still exist\r\nregarding edge-to-edge intra-domain and inter-domain QoS provisioning\r\nand management. This tutorial will start by providing background on\r\ntechnologies such as DiffServ, MPLS and their potential combination for\r\nQoS support. It will subsequently introduce trends in Service Level\r\nAgreements (SLAs) and Service Level Specifications (SLSs) for the\r\nsubscription to QoS-based services It will then move to examine\r\narchitectures and frameworks for the management and control of\r\nQoS-enabled networks, including the following aspects: approaches and\r\nalgorithms for off-line traffic engineering and provisioning through\r\nexplicit MPLS paths or through hop-by-hop IP routing; approaches for\r\ndynamic resource management to deal with traffic fluctuations outside\r\nthe predicted envelope; a service management framework supporting a\r\n"resource provisioning cycle"; the derivation of expected traffic\r\ndemand from subscribed SLSs and approaches for SLS invocation admission\r\ncontrol; a monitoring architecture for scalable information collection\r\nsupporting traffic engineering and service management; and realization\r\nissues given the current state-of-the-art of management protocols and\r\nmonitoring support. The tutorial will also include coverage of emerging\r\nwork towards inter-domain QoS provisioning, including aspects such as:\r\nan inter-domain business model; customer and peer provider SLSs; an\r\narchitecture for the management and control of inter-domain services;\r\ninter-domain off-line traffic engineering; and QoS extensions to BGP\r\nfor dynamic traffic engineering. Relevant industrial activities such as\r\nIPsphere will be also covered. In all these areas, recent research work\r\nwill be presented, with pointers to bibliography and a specially\r\ntailored Web page with additional resources.\r\nThis tutorial was given by Pr. George Pavlou at NOMS 2006 \r\nContact : Pr. George Pavlou |
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