Conference Presentation at the SESP Workshop (Simulation and EGSE for European Space Applications), September, 2009
Please visit
https://sites.google.com/site/simulationarchitecture/
for further information
PCE, OpenFlow, & the Centralized Control PlaneMetaswitch NTD
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2) SDN: Empowers the operator with reduced OPEX and CAPEX
3) PCE: Solves some real-world carrier problems
International Journal of Engineering Research and Development (IJERD)IJERD Editor
International Journal of Engineering Research and Development is an international premier peer reviewed open access engineering and technology journal promoting the discovery, innovation, advancement and dissemination of basic and transitional knowledge in engineering, technology and related disciplines.
These slides overview the discussion towards building the HPFP WG at the ONF. You'll also understand how OpenFlow and existing control protocols can work together on routers and switches.
PCE, OpenFlow, & the Centralized Control PlaneMetaswitch NTD
1) OpenFlow: One of a number of possible SDN approaches
2) SDN: Empowers the operator with reduced OPEX and CAPEX
3) PCE: Solves some real-world carrier problems
International Journal of Engineering Research and Development (IJERD)IJERD Editor
International Journal of Engineering Research and Development is an international premier peer reviewed open access engineering and technology journal promoting the discovery, innovation, advancement and dissemination of basic and transitional knowledge in engineering, technology and related disciplines.
These slides overview the discussion towards building the HPFP WG at the ONF. You'll also understand how OpenFlow and existing control protocols can work together on routers and switches.
Tutorial about MPLS Implementation with Cisco Router, this second of two chapter discuss about MPLS Configuration, LDP Configuration, VPN Services, L2VPN (VLL & VPLS) and L3VPN (VPRN).
it also contain case study and implementation of VLL, VPLS, and VPRN
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The introduction of SDN in IP backbones requires the coexistence of regular IP forwarding and SDN based forwarding. The former is typically applied to best effort Internet traffic, the latter can be used for different types of advanced services (VPNs, Virtual Leased Lines, Traffic Engineering…). In this paper we first introduce the architecture and the services of an “hybrid” IP/SDN networking scenario. Then we describe the design and implementation of an Open Source Hybrid IP/SDN (OSHI) node. It combines Quagga for OSPF routing and Open vSwitch for OpenFlow based switching on Linux. The availability of tools for experimental validation and performance evaluation of SDN solutions is fundamental for the evolution of SDN. We provide a set of open source tools that allow to facilitate the design of hybrid IP/SDN experimental networks, their deployment on Mininet or on distributed SDN research testbeds and their test. Finally, using the provided tools, we evaluate key performance aspects of the proposed solutions. The OSHI development and test environment is available in a VirtualBox VM image that can be downloaded.
Tutorial about MPLS Implementation with Cisco Router, this second of two chapter discuss about MPLS Configuration, LDP Configuration, VPN Services, L2VPN (VLL & VPLS) and L3VPN (VPRN).
it also contain case study and implementation of VLL, VPLS, and VPRN
OSHI - Open Source Hybrid IP/SDN networking @EWSDN14Stefano Salsano
The introduction of SDN in IP backbones requires the coexistence of regular IP forwarding and SDN based forwarding. The former is typically applied to best effort Internet traffic, the latter can be used for different types of advanced services (VPNs, Virtual Leased Lines, Traffic Engineering…). In this paper we first introduce the architecture and the services of an “hybrid” IP/SDN networking scenario. Then we describe the design and implementation of an Open Source Hybrid IP/SDN (OSHI) node. It combines Quagga for OSPF routing and Open vSwitch for OpenFlow based switching on Linux. The availability of tools for experimental validation and performance evaluation of SDN solutions is fundamental for the evolution of SDN. We provide a set of open source tools that allow to facilitate the design of hybrid IP/SDN experimental networks, their deployment on Mininet or on distributed SDN research testbeds and their test. Finally, using the provided tools, we evaluate key performance aspects of the proposed solutions. The OSHI development and test environment is available in a VirtualBox VM image that can be downloaded.
This presentation reviews the various tools that carrier-grade Ethernet offers to meet the performance required from the ICT network and discusses strategies for the transition to Smart Grid communications
In this presentation, we will discuss in details about the TCP/ IP framework, the backbone of every ebusiness.
To know more about Welingkar School’s Distance Learning Program and courses offered, visit:
http://www.welingkaronline.org/distance-learning/online-mba.html
Simulation assisted elicitation and validation of behavioral specifications f...Daniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Validation of Spacecraft Behaviour Using a Collaborative ApproachDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Modules for reusable and collaborative modeling of biological mathematical sy...Daniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Collaborative modeling and co simulation with destecs - a pilot studyDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Collaborative engineering solutions and challenges in the development of spac...Daniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Collaborative development and cataloguing of simulation and calculation model...Daniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
A vision on collaborative computation of things for personalized analysesDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
A package system for maintaining large model distributions in vle softwareDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
A framework for distributed control and building performance simulationDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
A collaborative environment for urban landscape simulationDaniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
System model optimization through functional models execution methodology and...Daniele Gianni
Presentation delivered at the 3rd IEEE Track on
Collaborative Modeling & Simulation - CoMetS'12.
Please see http://www.sel.uniroma2.it/comets12/ for further details.
Validation of Service Oriented Computing DEVS Simulation ModelsDaniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
The DEVS-Driven Modeling Language: Syntax and Semantics Definition by Meta-Mo...Daniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
Modular Mathematical Modelling of Biological SystemsDaniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
A Model-Based Method for System Reliability AnalysisDaniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
Automation of SysML Activity Diagram Simulation with Model-Driven Engineering...Daniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
Calibration of Deployment Simulation Models - A Multi-Paradigm Modelling Appr...Daniele Gianni
Presentation at the 2nd International Workshop on Model-driven Approaches for Simulation Engineering
(held within the SCS/IEEE Symposium on Theory of Modeling and Simulation part of SpringSim 2012)
Please see: http://www.sel.uniroma2.it/mod4sim12/ for further details
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
SimArch: A Layered Architectural Approach to Reduce the Development Effort of Distributed Simulation Systems
1. SimArch:
A Layered Architectural Approach to
Reduce the Development Effort of
Distributed Simulation Systems
Daniele Gianni1, Andrea D’Ambrogio2 and Giuseppe Iazeolla2
1European Space Agency
daniele.gianni@esa.int
2Dept.
of Computer Science
Unversity of Rome TorVergata, Italy
{dambro, iazeolla}@info.uniroma2.it
11th International Workshop on Simulation & EGSE Facilities for Space Programmes (SESP 2010), Sept 28– 30, 2010, Noordwijk, NL
2. Outline
• Background:
– Why Distributed Simulation (DS)?
– Why DS for Ground Segment (GS)?
– IEEE 1516 High Level Architecture (HLA) Main Concepts
• Problem Statement
• SimArch
• Example Application
– Scenario, Local Simulation (LS) System, From LS to DS
– Experimental Setting
SESP 2010 2/17
3. Why DS?
• In general, DS brings
– scalability, i.e., it can scale up for the increased
computational requirements
– aggregation and reusability, i.e., it enables the
reuse of simulation systems available in
geographically distributed sites;
– parallelism, i.e., it can exploit intrinsic model
parallelism
SESP 2010 3/17
4. Why DS for GS?
• DS can bring into GS design:
– A more realistic simulation experiment using data
from the space segment
• A GS can consist of several systems that can
inherently be geographically distributed (e.g.
main and back-up facilities)
• To increase simulation realism, data sequences
from the real system (e.g. space segment) can be
injected into the simulation
• In this case, systems composing the GS can be
only simulated in loco
SESP 2010 4/17
5. IEEE HLA Main Concepts
• Federate: a remotely-
accessible simulation
program
• Federation: the overall
distributed simulation,
composed of a set of Federate
Federates Model Logic
• RTI: provides RTI Ambassador
Federate Ambassador
communication and
coordination services to
the Federates that join Runtime Infrastructure (RTI)
into a Federation SESP 2010 5/17
6. Problem Statement
• Developing a DS HLA-based system requires a
considerable extra effort with respect to the
equivalent LS one
• The extra effort can be outlined as:
– Extra effort to acquire HLA knowledge and skills
– Extra coding effort to create HLA federates: about
3.5K extra LOC per federate
– Extra design effort to determine design choices: e.g.
which federates are to develop, which can be reused,
which time advancement modality and simulation
paradigm need to be adopted, etc.
SESP 2010 6/17
7. SimArch Solution
• To introduce a layered architecture that raises DS
developers from all the concerns of the
distributed execution, thus practically eliminating
the extra effort
• This can be shown by a mechanical procedure
that derives a DS simulator from the equivalent
LS one
• Aside-advantage: simulation model portability
over diverse LS and DS infrastructures
implementing SimArch interfaces
SESP 2010 7/17
9. Process Interaction Paradigm
ev2
Key
E2
ev1
Entity
E1 Input Port
ev3 Out Port
E3
Link/Event ev
ev4
SESP 2010 9/17
10. Example Scenario
Space Segment
Input Data
Stream
Antenna 1
Host A Gateway 1 Ground Segment Antenna 2
Data Delivery Input Data
Back-up Facilities Stream
Network
(LAN1)
Gateway 2
Internet
Main Facilities Data Delivery
Network
(LAN2)
Host B
SESP 2010 10/17
11. Local Simulator Overall Architecture
Host A Host B
Gate- Gate-
LAN 1 LAN 2
way 1 way 2
WAN
Key Flow
Control WANACK
Entity
Input port
Out port
Link
SESP 2010 11/17
12. Partitioning
Federate 2
Host A Host B
Gate- Gate-
LAN 1 LAN 2
way 1 way 2
WAN
Federate 1
Key Flow
Control WANACK
Entity
Input port
Out port
Federate 3
Link
Partitioning border
SESP 2010 12/17
13. Federate 1
Federate 2
Host A Host B
Gate- Gate-
LAN 1 LAN 2
way 1 way 2
WAN
Host
A Federate 1
Gate- Key Flow
WANACK
LAN 1
Control
Entity
Input port
Federate 3
way 1 Out port
Link
Partitioning border
Key Flow
Entity Control WANACK
Input port
Out port
Link
Partitioning border
Remote item
SESP 2010 13/17
14. Federate 2
Gate- Gate-
LAN 1 LAN 2
way 1 way 2
WAN
Key
Entity
Input port
Out port
Link Federate 2
Partitioning border Host A Host B
Remote item LAN 1
Gate-
way 1
Gate-
way 2
LAN 2
WAN
Federate 1
Key Flow
Control WANACK
Entity
Input port
Out port
Federate 3
Link
Partitioning border
SESP 2010 14/17
15. Federate 3
Host
Key
B
Entity Gate-
Input port LAN 2
Out port
Link
way 2
Partitioning border
Remote item
Flow
WANACK
Control
Federate 2
Host A Host B
Gate- Gate-
LAN 1 LAN 2
way 1 way 2
WAN
Federate 1
Key Flow
Control WANACK
Entity
Input port
Federate 3
15/17
Out port
Link
Partitioning border
SESP 2010
16. Experimental Setup
• 4 Federates (3 Model
US - Georgia Italy
federates + 1
Federation Manager)
• 3 running in Rome
CoC's
LAN
Georgia Tech WAN
TorVergata
CORBA RTI Server
• 1 running in Atlanta
• HLA implementations:
Federate 2
Client
SimLab
Pitch pRTI and
Key
Federate CORBA-HLA (figure
shows CORBA-HLA)
IIOP protocol
Pitch protocol over TCP and UDP
Server
Federate 0 Executive
FederationManager Federate 1
pRTI 1516
• Validation by
Local
Client Client Client
ORB and CORBA RTI
comparison between
LS and DS output
SESP 2010 16/17
17. Conclusion
• DS can be used in GS design to improve
simulation realism by injecting data from real
systems into the simulated environment
• Developing a DS system requires considerable
extra effort with respect to the local one
• We have shown how a layered approach can
practically eliminate the extra effort
• We have outlined an example and described a
mechanical procedure to derive a DS system
for a LS one
SESP 2010 17/17