SVNE: Survivable Virtual Network Embedding Algorithms for Network Virtualization

Self-managed resources in network virtualisation environments

“…This is reasonable since network link failures occur about 10 times more than node failures [39], and given that about 70% of unplanned link failures are single link failures [36]. It should however be noted that any node failure can be considered as a failure of links adjacent to the node [10], and as such, our proposal can be extended to cover multiple link failures, and hence node failures.…”

“…It is worth mentioning that just like related works [10], [37], our proposal only focusses on single substrate link failures. This is reasonable since network link failures occur about 10 times more than node failures [39], and given that about 70% of unplanned link failures are single link failures [36].…”

“…This pricing model has advantages over the constant pricing model that has been used in most network virtualisation proposals such as [20], [10] and [40], as it does not only allow prices to reflect network loading (hence encouraging better resource utilisation, and minimising network failures from over loading), but also ensures that resources have reserve prices (to cater for minimum fixed costs), and maximum prices to ensure competitiveness. Therefore, the price per unit of flow P (s) on a substrate link s is determined as shown in Fig.…”

“…Since in the more practical situation a NVE will involve multiple InPs, and because an extension of network survivability approaches from the single to multi domain environments is not trivial [10], this dissertation proposes a distributed and dynamic approach to survivability in multi-domain NVEs. This is achieved by using a multi-agent-system that uses a multi-attribute negotiation protocol and a dynamic pricing model which allow InPs to form coalitions to support resource backups.…”

A Survey on Virtual Network Embedding in Cloud Computing Centers

“…Virtualization technology has involved from OS virtualization (Virtual Machines, VM) to virtualization of distributed system components, such as virtual cluster and virtual network. Network virtualization [1][2][3] plays an important role in bridging the virtual and physical infrastructures. Therefore, how to allocate virtual resources onto physical recourses to construct the virtual network became a crucial issue that eventually decides the resource utilization, throughput and energy consumption of a Cloud Computing environment.…”