Efficient Topology Discovery in Software Defined Networks: Revisited

Hasan, Dana; Othman, Мohamed

doi:10.1016/j.procs.2017.10.051

Cited by 23 publications

(10 citation statements)

References 6 publications

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“…3b and Fig. 3c represent the usual exchange of HDDP Request and HDDP Reply messages, respectively, as explained in the previous section (steps [1][2][3][4][5][6][7][8]. In the hypothetical situation in which, for example, node E3 moves, this is noticed by the periodic exchange of Hello messages.…”

Section: B Hddp In Wireless Scenariosmentioning

confidence: 98%

“…Nowadays, there is no standalone topology discovery solution that can obtain the full topology of a hybrid SDN domain with SDN and non-SDN devices. The most commonly deployed service for topology discovery in SDN is OFDP [3], based on Link Layer Discovery Protocol (LLDP). However, OFDP requires that all devices support OpenFlow [3].…”

Section: Related Workmentioning

confidence: 99%

“…The most commonly deployed service for topology discovery in SDN is OFDP [3], based on Link Layer Discovery Protocol (LLDP). However, OFDP requires that all devices support OpenFlow [3]. Diverse protocols including OFDPv2 [4], Tree Exploration Discovery Protocol (TEDP) [5] or enhanced Topology Discovery Protocol (eTDP) [6] outperform OFDP in terms of scalability and efficiency, however, none of them is capable of discovering non-SDN devices.…”

Section: Related Workmentioning

confidence: 99%

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HDDP: Hybrid Domain Discovery Protocol for Heterogeneous Devices in SDN

et al. 2020

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Computer networks are adopting the new Software-Defined Networking (SDN) architecture, however not all devices can support it, mainly due to power and computational constraints. This paper proposes the Hybrid Domain Discovery Protocol (HDDP), a new discovery protocol that enhances the existing OpenFlow Discovery Protocol (OFDP). HDDP allows the discovery of hybrid network topologies composed of both SDN and non-SDN devices, which no other state-of-the-art protocol can achieve. HDDP has been implemented in a software switch and emulated in diverse networks, where it discovers hybrid topologies by using a number of messages similar to competitors, as they only discover SDN devices.

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Section: B Hddp In Wireless Scenariosmentioning

confidence: 98%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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HDDP: Hybrid Domain Discovery Protocol for Heterogeneous Devices in SDN

et al. 2020

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“…Hasan and Othman [25] revisit the current OpenFlowbased topology discovery protocols, taking into account the effects of retransmitting the discovery packets until the SDN controller identifies the entire map of the network. To that end, the authors re-implemented the OFDPv2 proposed in [22] and [23] and compared it with the standard OFDP protocol.…”

Section: A Openflow-based Approachesmentioning

confidence: 99%

“…In [22], [23], [25]- [27], and [29], the controller needs, as previous knowledge, the IP address and the list of active ports of each SDN switch in the network. This knowledge is obtained through the establishment of an initial handshake between the controller and forwarding devices.…”

Section: A Openflow-based Approachesmentioning

confidence: 99%

eTDP: Enhanced Topology Discovery Protocol for Software-Defined Networks

2019

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Discovering network elements in a dynamic and optimized manner and being able to contend with ever-growing traffic is a key requirement for current networking environments. In software-defined networks (SDNs), the controller collects the topology information from the data plane and maintains an abstract view of the entire network, which is crucial for the proper functioning of applications and network services. However, there is still the need for an enhanced protocol for automatic discovery and mechanisms of autoconfiguration of network elements according to new policies and business requirements. To overcome this challenge, this paper presents a novel protocol that, unlike existing approaches, enables a distributed layer-2 discovery without the need for previous network configurations or controller knowledge of the network. By using this mechanism, the SDN controller can discover the network view without incurring scalability issues, while taking advantage of the shortest control paths toward each switch. The obtained results show that our enhanced protocol is efficient in terms of time and message load over a wide range of generated networks and outperforms the state-of-the-art techniques. INDEX TERMS Network management, protocols, software-defined networks, topology discovery. CRISTINA CERVELLÓ-PASTOR received the M.Sc. and Ph.D. degrees in telecommunication engineering from the Barcelona School of Telecommunications Engineering, Politècnica de Catalunya, Barcelona, Spain, where she is currently an Associate Professor and the Head of the Department of Network Engineering. Being part of the BAMPLA Research Group, she is responsible and actively participated in diverse national and European competitive projects (NOVI, FEDER-ICA, ATDMA, A@DAN, Euro-NGI, Euro-FGI, and EURONF) and private funding research and development projects. She has published diverse papers in national and international journals and conferences. She is supervising dissertation in the field of management, optimal resource allocation, topology discovery, and routing in software-defined networks/NFV and 5G.

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Architectural Design, Improvement, and Challenges of Distributed Software-Defined Wireless Sensor Networks

Bukar

Othman

2021

Wireless Pers Commun

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Efficient Topology Discovery in Software Defined Networks: Revisited

Cited by 23 publications

References 6 publications

HDDP: Hybrid Domain Discovery Protocol for Heterogeneous Devices in SDN

HDDP: Hybrid Domain Discovery Protocol for Heterogeneous Devices in SDN

eTDP: Enhanced Topology Discovery Protocol for Software-Defined Networks

Architectural Design, Improvement, and Challenges of Distributed Software-Defined Wireless Sensor Networks

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