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To reduce influence of node failure and achieve high reliability in communications, research on node protection algorithm is needed. In this paper, we first provide an overview of current research of redundant tree algorithm (RT). Then we propose a new algorithm called single node protection algorithm (SNP) based on previous redundant tree algorithm, which is used to achieve recovery form single node...
One of the important concepts in MPLS Traffic Engineering (TE) is LSP setup routing. The objective of routing algorithm is to increase the number of accepted request and satisfying Quality of Service (QoS) constrains. Although much work has been done on laying MPLS paths to optimize performance, most has focused on satisfying bandwidth requirements as QoS constrains. The previously published research...
Generalized Multi-Protocol Label Switching (GMPLS) based optical networks are viewed as a promising network infrastructure for the next generation network (NGN) development. By pre-configuring the resources of dynamic optical networks, we can reconstruct the physical topology, thus increase the number of direct routes between potentially heavily loaded physical node pairs and optimize the performance...
This paper considers that multi protocol label switching (MPLS) and differential services (DiffServ) architectures are being applied to IP networks to provide more scalability, service differentiation. The traditional Diffserv mechanism provides classifier for edge router to examine incoming packets and mark packets with a code point that reflects the desired level of service, the core router responsibilities...
This paper discusses and evaluates the behaviour o fa DS-TE algorithm (DiffSev aware MPLS traffic Engineering) called PEMS, and a dynamic multipath routing algorithm for load balancing (LBWDP), applied on a huge topology that correspond to real network. To clarify network topologies and routing algorithms that are suitable for MPLS traffic engineering, we evaluate them from the viewpoint of network...
Multi-protocol label switching (MPLS) is rapidly emerging technology, which plays a key role in next generation networks by delivering QoS and traffic engineering features. MPLS is helpful in managing traffic when some links or paths are under and/or over utilized. In MPLS a look - up in switching table is certainly less complex and time consuming than a corresponding routing table look - up in an...
Most network operators have considered reducing Label Switched Routers (LSR) label spaces (i.e. the number of labels that can be used) as a means of simplifying management of underlaying Virtual Private Networks (VPNs) and, hence, reducing operational expenditure (OPEX). This letter discusses the problem of reducing the label spaces in Multiprotocol Label Switched (MPLS) networks using label merging...
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