(1) SDNS: Exploiting SDN and the DNS to Exchange Traffic in a Federated Network ; (2) SDNetkit A Testbed for Experimenting SDN in Multi-Domain Networks 🗓 🗺

When

Monday, June 26th 2017 at 2:30 PM

Where

Department of Engineering
Section of Computer Science and Automation
Via della Vasca Navale, 79
Meeting room (1.10) on 1st floor

Speaker

Gabriele Lospoto
Postdoctoral Researcher in Computer Science and Automation
Roma Tre University
http://www.dia.uniroma3.it/~compunet/www/view/person.php?id=gabriele

Abstract (1)

Federated networks have primarily emerged to support cloud computing services,
in order to reduce costs for providers, as well as to increase their incomes.
Up to now, the research activity has been mostly focused on architectures and
cost models, setting aside technological aspects.
In this paper, we propose SDNS, an SDN-system that opens the
application fields of federated networks to federated connectivity services. By
exploiting the centralized architecture offered by SDN and relying on the
OpenFlow protocol, the most adopted enabler for SDN, we propose a way to easily
interact with the Domain Name System (DNS) traffic in order to allow
communication among multiple customers connected to different providers in
presence of any type of IP address plan. We tested the scalability of our
approach in a prototype implementation based on Netkit, a widely adopted
simulation environment. We measured several control-plane overhead metrics,
like the number of DNS, OpenFlow, and SDNS messages exchanged in the
network. Our experiments show that the scalability of our method is essentially
the same of the DNS service.

Joint work with Habib Mostafaei, Andrea Brandimarte, Roberto di Lallo,
Massimo Rimondini, Giuseppe Di Battista

Abstract (2)

Mininet is the de-facto standard simulation environment for experimenting with
SDN enabled networks based on the OpenFlow protocol. Although Mininet is powerful
and not resource hungry, it has a strong limitation: it is not possible to use it for networks
in which both OpenFlow and standard distributed routing protocols (e.g. Open Short Path
First, OSPF) simultaneously run. In this paper we present SDNetkit, an enhanced release
of the widely used Netkit network emulator that overcomes the limitation imposed by Mininet.
We improved Netkit by adding all needed software to run OpenFlow based networks
(e.g. OpenVSwitch and the Ryu framework). We show two use cases in which OpenFlow
and standard protocols coexist. In particular, we address interoperability problems by
presenting one use case in which OpenFlow nodes interact with standard ones (e.g.
OSPF routers) in multi-domain networks, as well as one use case in which the OpenFlow
protocol and OSPF run on the same machine, discussing some problems related to specific
configurations. We believe that having the possibility to experiment SDN also in presence
of interoperability scenarios results in opening to new research perspectives.

Joint work with Habib Mostafaei, Roberto di Lallo,
Massimo Rimondini, Giuseppe Di Battista

Both papers will be presented at the forthcoming IEEE NetSoft 2017 (http://sites.ieee.org/netsoft/)