Designing and building SDN testbeds for energy-aware traffic engineering services

Abstract

As experimenting with energy-aware techniques on large-scale production infrastructure is prohibitive, a large number of proposed traffic-engineering strategies have been evaluated only using discrete-event simulations. The present work discusses (i) challenges towards building testbeds that allow researchers and practitioners to validate and evaluate the performance and quality of energy-aware traffic-engineering strategies, (ii) requirements to fulfill when porting simulations to testbeds, and (iii) two proof-of-concept testbeds. One testbed uses and provides Software-Defined Network (SDN) services created on the Open Network Operating System (ONOS) while the other is a composition of virtual Open vSwitches (OVS) controlled by the Ryu SDN framework. The aim of the testbeds is to validate previously proposed energy-aware traffic engineering strategies in different environments. We detail the platforms and illustrate how they have been used for performance evaluation. Additionally, the paper compares results obtained in the testbeds with evaluations performed using discrete-event simulations and presents challenges faced while implementing energyaware traffic engineering mechanisms as SDN services in testbed environments.

Implementation of a Partial Order Data Security Model for the Internet of Things (IoT) Using Software Defined Networking (SDN)

“…Many papers in the literature mention a single controller for Wide-area SDN. In ElGaroui et al [12] and Dias et al [11], the authors use the same controller as us (Ryu controller) to control multiple routers in their wide area SDN. The constraints on the physical placement of the servers and of the application entities will depend on factors such as the type of controllers and routers used, for example hierarchical controllers allow a more distributed placement.…”

“…Al-Haj and Aziz [4] present a solution to enforce security policies to control the routing configuration in database-defined networks. To achieve this, the authors use row-level security checks and the lattice-based model [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] alongside with the RAVEL architecture (Wang et al [32]). Their solution consists in constructing routing tables by using the lattice model, encoding the tables in the data base-defined network architecture of RAVEL and enforcing multi-level security policies using row-level security as an enforcement mechanism.…”

“…The vast majority of papers dealing with SDN security tackle security factors such as exchange and deployment of security policies within the network in the case of SDN domains, intrusion detection, security against external attacks, etc. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Several of the proposed security solutions use cryptographic algorithms that may be difficult to implement in sensors.…”