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Availability improvement of layer 2 seamless networks using OpenFlow.

Molina E, Jacob E, Matias J, Moreira N, Astarloa A - ScientificWorldJournal (2015)

Bottom Line: The network robustness and reliability are strongly influenced by the implementation of redundancy and its ability of reacting to changes.In situations where packet loss or maximum latency requirements are critical, replication of resources and information may become the optimal technique.To this end, the IEC 62439-3 Parallel Redundancy Protocol (PRP) provides seamless recovery in layer 2 networks by delegating the redundancy management to the end-nodes.

View Article: PubMed Central - PubMed

Affiliation: Department of Communications Engineering, University of the Basque Country UPV/EHU, Alameda de Urquijo, s/n, 48013 Bilbao, Spain.

ABSTRACT
The network robustness and reliability are strongly influenced by the implementation of redundancy and its ability of reacting to changes. In situations where packet loss or maximum latency requirements are critical, replication of resources and information may become the optimal technique. To this end, the IEC 62439-3 Parallel Redundancy Protocol (PRP) provides seamless recovery in layer 2 networks by delegating the redundancy management to the end-nodes. In this paper, we present a combination of the Software-Defined Networking (SDN) approach and PRP topologies to establish a higher level of redundancy and thereby, through several active paths provisioned via the OpenFlow protocol, the global reliability is increased, as well as data flows are managed efficiently. Hence, the experiments with multiple failure scenarios, which have been run over the Mininet network emulator, show the improvement in the availability and responsiveness over other traditional technologies based on a single active path.

No MeSH data available.


Test cases.
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Related In: Results  -  Collection


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fig6: Test cases.

Mentions: Below, we study different lossy topologies and study scenarios in order to understand the robustness provided by the establishment of multiple active paths. As a test of concept, we generated two identical and independent topologies to which the PRP nodes are connected. Furthermore, both topologies enable the creation of disjoint paths of equal cost, which reduces the possible number of cases and makes the understanding of them easier (Figure 6(a) sketches how this redundancy is organized). We perform a comparative evaluation in terms of recovery time for the following cases:


Availability improvement of layer 2 seamless networks using OpenFlow.

Molina E, Jacob E, Matias J, Moreira N, Astarloa A - ScientificWorldJournal (2015)

Test cases.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4338402&req=5

fig6: Test cases.
Mentions: Below, we study different lossy topologies and study scenarios in order to understand the robustness provided by the establishment of multiple active paths. As a test of concept, we generated two identical and independent topologies to which the PRP nodes are connected. Furthermore, both topologies enable the creation of disjoint paths of equal cost, which reduces the possible number of cases and makes the understanding of them easier (Figure 6(a) sketches how this redundancy is organized). We perform a comparative evaluation in terms of recovery time for the following cases:

Bottom Line: The network robustness and reliability are strongly influenced by the implementation of redundancy and its ability of reacting to changes.In situations where packet loss or maximum latency requirements are critical, replication of resources and information may become the optimal technique.To this end, the IEC 62439-3 Parallel Redundancy Protocol (PRP) provides seamless recovery in layer 2 networks by delegating the redundancy management to the end-nodes.

View Article: PubMed Central - PubMed

Affiliation: Department of Communications Engineering, University of the Basque Country UPV/EHU, Alameda de Urquijo, s/n, 48013 Bilbao, Spain.

ABSTRACT
The network robustness and reliability are strongly influenced by the implementation of redundancy and its ability of reacting to changes. In situations where packet loss or maximum latency requirements are critical, replication of resources and information may become the optimal technique. To this end, the IEC 62439-3 Parallel Redundancy Protocol (PRP) provides seamless recovery in layer 2 networks by delegating the redundancy management to the end-nodes. In this paper, we present a combination of the Software-Defined Networking (SDN) approach and PRP topologies to establish a higher level of redundancy and thereby, through several active paths provisioned via the OpenFlow protocol, the global reliability is increased, as well as data flows are managed efficiently. Hence, the experiments with multiple failure scenarios, which have been run over the Mininet network emulator, show the improvement in the availability and responsiveness over other traditional technologies based on a single active path.

No MeSH data available.