Publications de Dejan Kostic | EPFL Graph Search

Systematically testing OpenFlow controller applications

Jennifer Rexford, Dejan Kostic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

The emergence of OpenFlow-capable switches enables exciting new network functionality, at the risk of programming errors that make communication less reliable. The centralized programming model, where a single controller program manages the network, seems ...

Elsevier Science Bv2015

What You Need to Know About SDN Flow Tables

Dejan Kostic, Maciej Leszek Kuzniar, Peter Peresini

SDN deployments rely on switches that come from various vendors and differ in terms of performance and available features. Understanding these differences and performance characteristics is essential for ensuring successful deployments. In this paper we me ...

Springer-Verlag Berlin2015

Monocle: Dynamic, Fine-Grained Data Plane Monitoring

Dejan Kostic, Maciej Leszek Kuzniar, Peter Peresini

2015

ESPRES: Transparent SDN Update Scheduling

Dejan Kostic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

2014

ESPRES: Easy Scheduling and Prioritization for SDN

Dejan Kostic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

2014

Providing Reliable FIB Update Acknowledgments in SDN

Dejan Kostic, Maciej Leszek Kuzniar, Peter Peresini

2014

A Method and a system for energy consumption saving in wireless access networks

Dejan Kostic, Marco Canini

The method of the invention, comprising at the user side: a) checking if the load of a first gateway to which a user terminal device is wirelessly connected, falls below a given low load threshold; b) if said first gateway load has fallen below said given ...

2013

Accelerating resource allocation in virtualized environments using workload classes and/or workload signatures

Ricardo Bianchini, Dejan Kostic, Nedeljko Vasic, Dejan Novakovic

Systems, methods, and apparatus for managing resources assigned to an application or service. A resource manager maintains a set of workload classes and classifies workloads using workload signatures. In specific embodiments, the resource manager minimizes ...

2013

Automatic Failure Recovery for Software-Defined Networks

Dejan Kostic, Nedeljko Vasic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

2013

OpenFlow Needs You! A Call for a Discussion About a Cleaner OpenFlow API

Dejan Kostic, Maciej Leszek Kuzniar, Peter Peresini

2013

DeepDive: Transparently Identifying and Managing Performance Interference in Virtualized Environments

Ricardo Bianchini, Dejan Kostic, Nedeljko Vasic, Dejan Novakovic, Stanko Novakovic

2013

OF.CPP: Consistent Packet Processing for OpenFlow

Dejan Kostic, Nedeljko Vasic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

This paper demonstrates a new class of bugs that is likely to occur in enterprise OpenFlow deployments. In particular, step-by-step, reactive establishment of paths can cause network-wide inconsistencies or performance- and space-related inefficiencies. Th ...

2013

Is the Network Capable of Computation?

Dejan Kostic, Peter Peresini

2013

DejaVu: Accelerating Resource Allocation in Virtualized Environments

Ricardo Bianchini, Dejan Kostic, Nedeljko Vasic, Dejan Novakovic

Effective resource management of virtualized environments is a challenging task. State-of-the-art management systems either rely on analytical models or evaluate resource allocations by running actual experiments. However, both approaches incur a significa ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2012

A method and device for predicting faults in an it system

Olivier Crameri, Dejan Kostic, Dejan Novakovic, Marco Canini, Vojin Jovanovic

A method and device for predicting faults in a distributed heterogeneous IT system (100), the method comprising: creating a local checkpoint (19) in an explorer node (10) of said system (100), said local checkpoint (19) reflecting the state of said explore ...

2012

A NICE Way to Test OpenFlow Applications

Jennifer Rexford, Dejan Kostic, Marco Canini, Peter Peresini

The emergence of OpenFlow-capable switches enables exciting new network functionality, at the risk of programming errors that make communication less reliable. The centralized programming model, where a single controller program manages the network, seems ...

2012

OFTEN Testing OpenFlow Networks

Dejan Kostic, Marco Canini, Maciej Leszek Kuzniar

2012

Profiling Software for Energy Consumption

Willy Zwaenepoel, Dejan Kostic, Simon Schubert

2012

A SOFT Way for OpenFlow Switch Interoperability Testing

Dejan Kostic, Marco Canini, Maciej Leszek Kuzniar, Peter Peresini

The increasing adoption of Software Defined Networking, and OpenFlow in particular, brings great hope for increasing extensibility and lowering costs of deploying new network functionality. A key component in these networks is the OpenFlow agent, a piece o ...

2012

Insomnia in the Access or How to Curb Access Network Related Energy Consumption

Dejan Kostic, Marco Canini

Access networks include modems, home gateways, and DSL Access Multiplexers (DSLAMs), and are responsible for 70-80% of total network-based energy consumption. In this paper, we take an in-depth look at the problem of greening access networks, identify root ...

Association for Computing Machinery2011