Michael Jarschel

Michael Jarschel
Technische Hochschule Ingolstadt · Computer Science

Dr. rer. nat.

About

54
Publications
27,994
Reads
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2,322
Citations
Citations since 2017
18 Research Items
1691 Citations
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2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
Education
October 2004 - August 2009

Publications

Publications (54)
Conference Paper
Full-text available
In our digitized society, emerging applications require highly performant and flexible networks that can adapt to satisfy varying connectivity needs. P4 as a domain-specific programming language for data plane pipelines introduces the required flexibility through easy-to-use programmability. However, the performance of P4-capable devices is still a...
Conference Paper
Full-text available
The SDN control plane provides the data plane with packet forwarding rules and thus defines its behavior. Understanding the performance of the controller is critical to assess the overall performance of the network. Although OpenFlow-based controllers have been well investigated in this regard, controller performance studies based on P4Runtime, whi...
Conference Paper
Full-text available
The recent trend to deploy programmable packet processors in cloud environments enhances the packet processing capability without losing the flexibility to adapt the functions at runtime. However, managing network functions, in particular deciding where to instantiate a certain function, is a non-trivial task with many decisive factors. In this pap...
Article
Full-text available
The advent of programmable network switch ASICs and recent developments on other programmable data planes (NPUs, FPGAs) drive the renewed interest in network data plane programmability. The P4 language has emerged as a strong candidate to describe a protocol independent datapath pipeline. With its supported architectures, the P4 language provides a...
Article
Full-text available
Data plane programmability brings network flexibility to a new level. However, it introduces the complexity of the data path's program as a new factor that influences packet forwarding latency and thus devices' performance. Accurate identification of the relation between data path complexity and packet forwarding latency enables the design and mana...
Article
Software Defined Networking aims to separate network control and data plane by moving the control logic from network elements into a logically-centralized controller. Using a well-defined, unified control-channel protocol, such as OpenFlow, the controller is able to configure the forwarding behavior of data plane devices. Here, the OpenFlow protoco...
Article
Full-text available
The ongoing network softwarization trend holds the promise to revolutionize network infrastructures by making them more flexible, reconfigurable, portable, and more adaptive than ever. Still, the migration from hard-coded/hard-wired network functions toward their software-programmable counterparts comes along with the need for tailored optimization...
Article
Full-text available
SDN and NFV gained significant momentum within the last years. Although widely used in research labs and cloud environments, SDN has not yet been deployed in mobile telecommunication networks. In this paper, we focus on use cases driving mobile network evolution towards cost-efficient IT-based solutions using standardized hardware and software-base...
Chapter
Full-text available
Studies that address Quality of Experience (QoE) management of multimedia systems and services are faced with the challenge of identifying the key QoE influence factors to be considered. Still, some consensus on the role of system factors, human factors, and context factors for various applications domains exists in these studies. In this paper, we...
Conference Paper
This work demonstrates TableVisor, a proxy layer for the OpenFlow control channel, which emulates a multi-table switch towards the controller. TableVisor uses one single-table switch per emulated flow table and combines all devices with their specific capabilities to a feature-rich pipeline consisting of multiple tables. As the used switches can be...
Chapter
The continuing increase in demand for online and cloud services as well as the development of new more resource-intensive applications poses a significant challenge to the network infrastructure. The resulting rise in energy costs and ecological considerations have made it apparent that a future network infrastructure needs to be as energy efficien...
Article
Software Defined Networking (SDN) introduces the concept of logically-centralized controllers in charge of managing the forwarding behavior of network elements. The new possibilities enabled through the centralization of control logic come with a certain risk: The controller might become a performance bottleneck. Therefore, ensuring sufficient cont...
Article
Full-text available
OpenFlow (OF) is one of the most widely used protocols for controller-to-switch communication in a software defined network (SDN). Performance analysis of OF-based SDN using analytical models is both highly desirable and challenging. There already exists a very elegant analytical model based on M/M/1 queues to estimate the packet sojourn time and p...
Conference Paper
Performance isolation between virtual resources is one of the key features of network virtualization. It is typically realized by configuring queues with specific rate guarantees on the egress ports of network devices. The drawback of this architectural choice, however, is that traffic from several ingress ports may result in congestion on an egres...
Article
Software Defined Networking (SDN) marks a paradigm shift towards an externalized and logically centralized network control plane. A particularly important task in SDN architectures is that of controller placement, i.e., the positioning of a limited number of resources within a network to meet various requirements. These requirements range from late...
Article
The introduction of Software Defined Networking (SDN) and Network Functions Virtualization (NFV) has transformed the way networks will be built in the future. This development also applies to mobile networks and their evolution. How the SDN and NFV concepts will be integrated exactly is still an open research question with multiple approaches and t...
Article
Full-text available
With an increase in number of software defined network (SDN) deployments, and OpenFlow consolidating as the protocol of choice for controller-switch interactions, a need to analytically model the system for performance analysis is increasing. An attempt has previously been made in [1] to model the system considering both a controller and a switch a...
Article
Full-text available
OpenFlow is one of the most commonly used protocols for communication between the controller and the forwarding element in a software defined network (SDN). A model based on M/M/1 queues is proposed in [1] to capture the communication between the forwarding element and the controller. Albeit the model provides useful insight, it is accurate only fo...
Thesis
With the introduction of OpenFlow by the Stanford University in 2008, a process began in the area of network research, which questions the predominant approach of fully distributed network control. OpenFlow is a communication protocol that allows the externalization of the network control plane from the network devices, such as a router, and to rea...
Article
Full-text available
The term Software Defined Networking (SDN) is prevalent in today's discussion about future communication networks. As with any new term or paradigm, however, no consistent definition regarding this technology has formed. The fragmented view on SDN results in legacy products being passed off by equipment vendors as SDN, academics mixing up the attri...
Conference Paper
Today's Internet does not provide an exchange of information between applications and networks, which may result in poor application performance. Concepts such as application-aware networking or network-aware application programming try to overcome these limitations. The introduction of Software-Defined Networking (SDN) opens a path towards the rea...
Conference Paper
Network Measurement has emerged as one promising field of application for Software Defined Networking. The reason for this is that the logically centralized control plane of an SDN network inherently has to aggregate network state information in order to function. This circumstance can be leveraged for network measurements at the SDN controller wit...
Conference Paper
Application-Aware Networking is a promising approach to provide good application quality to users in scenarios with limited network resources, like today's access networks. With SDN, a particularly interesting method to enable flowbased traffic management in networks has become available. In this work we take a look at how a specific application, i...
Conference Paper
With the introduction of Software Defined Networking (SDN), the concept of an external and optionally centralized network control plane, i.e. controller, is drawing the attention of researchers and industry. A particularly important task in the SDN context is the placement of such external resources in the network. In this paper, we discuss importa...
Conference Paper
Full-text available
Software Defined Networking (SDN) is a new paradigm for communication networks which separates the control plane from the data plane of forwarding elements. This way, SDN constitutes a flexible architecture that allows quick and easy configuration of network devices. This ability is particularly useful when networks have to be adapted to changing t...
Conference Paper
Software defined networking (SDN) promises a way to more flexible networks that can adapt to changing demands. At the same time these networks should also benefit from simpler management mechanisms. This is achieved by moving the network control out of the forwarding devices to purpose-tailored software-applications on top of a "networking operatin...
Article
Infrastructure as a service (laaS) is one of the prevalent business models in cloud computing and has generated much customer interest over the past few years. An IaaS provider offers the tem-porary deployment and maintenance of a custom virtual host and network infrastructure to its customers on which arbitrary applications can be run and/or hoste...
Conference Paper
Since its introduction OpenFlow has been used as an enabler for network experiments in a variety of fields. Although OpenFlow was initially only used in the research domain, the concept is now finding its way into data centers due to the relatively cheap hardware and high flexibility. In this paper, we take a look at the scalability and usability o...
Conference Paper
Full-text available
The high power consumption of data centers confronts the providers with major challenges. However, not only the servers and the cooling consume a huge amount of energy, but also the data center network architecture makes an important contribution. In this paper, we introduce different data center architectures and compare them regarding their power...
Article
Cloud Gaming is a new kind of service, which combines the successful concepts of Cloud Computing and Online Gaming. It provides the entire game experience to the users remotely from a data center. The player is no longer dependent on a specific type or quality of gaming hardware, but is able to use common devices. The end device only needs a broadb...
Conference Paper
Full-text available
Nowadays, global data centers are growing rapidly to satisfy the tremendous traffic demand driven by the exponential development and popularity of the Internet. Consequently, data centers consume a huge amount of energy and emit a lot of greenhouse gases that turns to be a big concern for data center owners and managers as well as for policymakers....
Conference Paper
Full-text available
Cloud Gaming is a new kind of service, which combines the successful concepts of Cloud Computing and Online Gaming. It provides the entire game experience to the users remotely from a data center. The player is no longer dependent on a specific type or quality of gaming hardware, but is able to use common devices. The end device only needs a broadb...
Article
Full-text available
In today's Internet, requirements of services regarding the underlying transport network are very diverse. In the future, this diversity will increase and make it harder to accommodate all services in a single network. A possible approach to keep up with this diversity in future networks is the deployment of isolated , custom tailored networks on t...
Conference Paper
Quality measurements are required to support VoIP traffic in the Internet. The widely used average Mean Opinion Score is, however, not sufficient for this task. In this paper, we provide a detailed analysis of the Skype SILK codec and compare it with the iLBC and GSM codec. The results show that the SILK codec is superior to the other codecs in sce...
Conference Paper
Full-text available
In the Future Internet, a multitude of networks will coexist and complement each other. These networks allow specialization but require isolation of functionalities in order to provide dependable and predictable networks. This allows different networks to run in parallel but isolated from each other. Additionally, network resource scalability is su...
Article
Full-text available
In today's Internet, services are very different in their requirements on the underlying transport network. In the future, this diversity will increase and it will be more difficult to accommodate all services in a single network. A possible approach to cope with this diversity within future networks is the introduction of support for running isola...

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Projects (2)