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Packet forwarding in Software-Defined Networks (SDN) relies on a centralised network controller which enforces network policies expressed as forwarding rules. Rules are deployed as sets of entries into network device tables. With heterogeneous devices, deployment is strongly bounded by the respective table constraints (size, lookup time, etc.) and forwarding pipelines. Hence, minimising the overall...
Openflow is a key step in abstracting network functions by separating the control and the forwarding plane. However, even with continuous innovation and evolution of the protocol, its adoption on forwarding device targets remains laborious and time consuming. In this paper, we present a semantic-based approach to packet forwarding design that tailors flow classification to the underlying switch device...
Openflow provides a key step in abstracting network functions by separating the control and the forwarding plane. However, current rather rigid switches constrain packet processing programmability. It is therefore complex to implement flexible packet classification within existing ASIC-based switches, especially when forwarding switches rely on a restricted set of tables. In this paper, we introduce...
Openflow is a step towards a more flexible data plane. In Openflow-based deployments, packet forwarding model relies on a set of pipelined tables. However, supporting multiple hardware tables is challenging while having serious limitations. In this paper, we investigate a novel approach to packet forwarding design that tailors Openflow forwarding paths according to the underlying hardware. Its main...
With the emerging trend of server virtualization, a new network access layer has emerged that is composed of the virtual switches running on the server platform, providing connectivity among the virtual machines (VMs) that live on the same physical server. This layer is generally implemented using the Open vSwitch (OVS) or an equivalent proprietary virtual switch. In networking for virtualization,...
Delivering high performance when several virtual nodes share the same physical resources requires finding the optimal resource allocation between them. In the context of Software Defined Network (SDN) and Network Virtualization, data plane requires the design of a new and more flexible flow packet processing. Virtual nodes involves several packet processing functions such as search operations in different...
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