Dynamic Virtual Cluster Reconfiguration for Efficient IaaS Provisioning

Manetti, Vittorio; Gennaro, Pasquale Di; Bifulco, Roberto; Canonico, Roberto; Ventre, Giorgio

doi:10.1007/978-3-642-14122-5_48

Cited by 3 publications

(2 citation statements)

References 6 publications

(5 reference statements)

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“…In fact, the issue in this case is the same; we faced with the design of the d‐classifier; hence, a switch technology like the one implemented for HSwitch could be used to address it. Anyway, please notice that this is a common issue for all the solutions presented in Section 2; furthermore, unlike other solutions that modify L3 headers, CATENAE only rewrites MAC addresses, which is an operation commonly supported in hardware switches.…”

Section: Discussionmentioning

confidence: 99%

CATENAE: A scalable service function chaining system for legacy mobile networks

Bifulco¹,

Matsiuk²,

Silvestro³

2017

Int J Network Mgmt

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Summary Service function chaining promises to ease the introduction of new services in mobile networks by enabling the dynamic composition of virtualized network functions. However, current implementations rely on new tunneling protocols and on network infrastructure changes, which make deployments in legacy networks difficult. In this paper, we present a system for service function chaining that can be readily deployed in mobile networks, without requiring any protocols or network modifications. Our system, named CATENAE, exploits the specific properties of the targeted deployment environment to overcome scalability issues and efficiently implement traffic steering. Using a centralized controller, CATENAE coordinates software‐defined networking software switches to implement a steering method based on MAC address rewriting. Furthermore, we present the design of a hybrid hardware‐software software‐defined networking switch to realize a scalable network traffic classifiers, which CATENAE employs to assign network flows to corresponding function chains. Using experimental evaluations based on physical testbeds, emulated environments, and simulations, we demonstrate that our approach is ready to be deployed in mobile networks, scales to handle expected mobile networks' workloads, introduces no overhead in the (virtual) network functions, and integrates seamlessly with legacy network management systems.

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Section: Discussionmentioning

confidence: 99%

CATENAE: A scalable service function chaining system for legacy mobile networks

Bifulco¹,

Matsiuk²,

Silvestro³

2017

Int J Network Mgmt

Self Cite

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“…Anyway, please notice that this is a common issue for all the solutions presented in Sec. 3.2, furthermore, unlike other solutions that modify L3 headers [76], CATENAE only rewrites MAC addresses, which is an operation commonly supported in hardware switches.…”

Section: Hardware Network Functionsmentioning

confidence: 99%

Architectural Support for Implementing Service Function Chains in the Internet

Silvestro¹

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Network Functions (NFs) have a crucial role in today's Internet infrastructure. They provide additional services on top of plain connectivity such as content caching, Network Address Translation (NAT), etc. However, standard IP networks staticity hinders the possibility of a flexible deployment of NFs in the Internet. In fact, initially, NFs were introduced in the network by hard-wiring the NF instances on the network traffic's path. This is unacceptable, especially when multiple NFs are chained together to form the so-called Service Function Chain (SFC).On these grounds, the SFC problem space has attracted the attention of the research community. SFC solutions have proliferated to a great extent, especially with the advance in Software-defined Networking (SDN) and Network Function Virtualization (NFV). However, by comprehensively reviewing state of the art, this thesis shows that Network Providers are reluctant towards state of the art SFC solutions, as they target "clean-state" system architecture i.e., they do not consider prior system architecture and equipment, which translates to greater investment. Therefore, this thesis introduces a "ready-to-deploy" SFC solution that targets legacy Mobile Networks. It aims to fill the gap of the current state of the art helping Network Providers in the transition phase towards more complex and costly SFC solutions.This thesis further investigates Internet-wide SFCs, in which multiple NF providers are involved in the SFC provisioning. State of the art solutions use plain IP routing to steer the traffic through the SFC i.e., each NF composing the chain is identified by its IP address. However, there is no prior work on how to effectively support the SFC Resolution in the Internet. In tackling these challenges, this thesis proposes the Domain Name System (DNS) as a key element, in today's Internet infrastructure, to implement the SFC Resolution. The inefficiencies of the current DNS when dealing with SFCs are highlighted. So, a collaborative SFC Resolution process is proposed. It efficiently supports the SFC Resolution process when multiple and independent NF providers are involved in the SFC provisioning.Moreover, this thesis highlights the importance of NFs which are strategically placed in the network, when dealing new application scenarios such as Internet of Things (IoT), vehicular networks, etc. In fact, in such use cases, NFs are placed at the network "Edge", in order to reduce the network latency required to reach the NFs. In order to support more variegated use cases, this thesis proposes a Multi-tier Edge Network architecture. It considers the case in which there is a large number of heterogeneous edge resources, widely distributed in the network. Therefore, an efficient placement algorithm is proposed. It exploits the multi-tier nature of the proposed network providing an optimized NF placement.

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