Software Defined Networking and OpenFlow: a Concise Review

Size: px
Start display at page:

Download "Software Defined Networking and OpenFlow: a Concise Review"

Transcription

1 Software Defined Networking and OpenFlow: a Concise Review Stefano Forti MSc in Computer Science and Networking Scuola Superiore Sant'Anna - University of Pisa 1. Introduction Nowadays networks are preeminently based on Data Link Layer schemes that makes use of MAC addresses in order to forward frames and of a Spanning Tree Protocol to avoid loops and consequent useless network flooding [1]. Whenever a frame enters a switch it is forwarded (a) to the output port only, in case the destination MAC address is already known (b) to all ports (except for the one the packet is coming from) in order to learn where to send frames for that particular destination On one hand this approach is simple and plug-and-play but, on the other hand, it is totally inefficient in case of failure (e.g. broadcast storm may happen). Moreover, all network management and configuration operations are to be performed manually at each node by using tools such as Command-Line Interfaces, allowing to connect one-by-one to all routers in the network Simple Network Management Protocols, used to modify and apply configurations through remote changes of a configuration file NETCONF, designed to automating devices configuration by means of XML for efficiently manage management information Forwarding and Control Element Separation, XMPP, OpenStack, etc Despite the considerable effort in the direction of simplifying their control plane, networks are still difficult to manage due to the complexity of their functions and protocols, to their static configurations, to scalability issues encountered when advanced configurations are required and for the total lack of open, widely adopted, configuration and management tools. The big idea behind Software Defined Networks (SDN) is the physical decoupling and separation of the control plane from the forwarding plane, as shown above. The control plane is totally managed at software level whereas forwarding is performed by dedicated hardware. This concept of an operating system for networks leads to big improvements in terms of efficiency and allows network operations to be specified 1

2 with high level programs, reducing the need for designing and manually configure distributed control protocols. OpenFlow [2][3] is one of the possible protocols for SDN and it is defined to be directly programmable agile and dynamically adaptive centrally managed programmatically configured open standards-based and vendor neutral More generally speaking, any SDN technology should pursue the aforementioned objectives in order to achieve better manageability, scalability and network virtualization. 2. Basic OpenFlow OpenFlow uses the concept of flows to identify network traffic. For each flow, at each node, the controller is able to define a match rule which works exactly the same as one of the instruction within the Instruction Set of a CPU. Rules can be statically or dynamically programmed by the SDN control software (i.e. added, updated, deleted ) and are stored within a flow table. Rule (Switch Port, VLAN_ID, MACs, Eth Type, IP ) Action Stats All flow table entries contain a rule to identify the flow (input port, source, destination), an action to be performed (e.g. forward to port x, forward to controller, drop, modify fields, send to processing pipeline) and some statistics. In case a match is not found for an incoming packet, the default choice is to send it to the controller over a secure channel. The addition of flows can be reactive, i.e. required by the controller when no match for an incoming packet is found, or proactive, if the controller populates the flow table with all its knowledge from the very beginning. Of course the first approach is much more efficient under a flow table utilization point of view but the second is far more reliable with respect to controller failures and flow setup time. Needless to say, as usual, flow table entries must be kept alive and periodically refreshed. Finally, an interesting feature which fosters scalability is the pipelining of flow tables within a certain system, as shown below. 2

3 3. OpenFlow Messages [4] The OpenFlow controller and the switches must exchange messages in order to properly configure the flow tables. Here the most important ones, which are also needed to comprehend the following section, are listed. Message Name Type Description HELLO Immutable exchanged between the switch and controller upon connection startup FEATURES_REQ / FEATURES_REP Configuration useful for the controller to collect information about the switch capabilities PACKET_IN Asynchronous wrap to transfer a packet to the controller PACKET_OUT Asynchronous wrap to transfer a packet to a switch PORT_STATUS Asynchronous Inform the controller of a change on a port. FLOW_MOD Controller Command contains update to the flow table BARRIER Barrier ensures message dependencies are met METER Meters and Rate Limiters controls the rate of the packets 4. Discovery in Software-Defined Networks The word discovery in the SDN environment could refer to the following three distinct and consecutive situations discovery of the switches (topology) discovery of the links discovery of the hosts treated according to different procedures. SWITCHES DISCOVERY The discovery of the switches starts whenever a switch connects to the controller and sends the HELLO message for version negotiation to it; it receives back another HELLO message and the connection is then established. Afterwards, since a transport channel connection has been established between the controller and the switch, the former sends a FEATURE_REQ to the switch in order to determine its capabilities. A FEATURE_REP message, including all the features of the switch (e.g. MAC address, buffer capability, number of tables, ports ), is sent back as shown above. Eventually a SET_CONFIG message is sent to the switch so that it knows what to do with fragmented packets when they are received (i.e. match as-is, drop, reassemble and match, etc.). At this stage, the controller is aware of quite a lot of the topology of the network: switches and their ports. LINKS DISCOVERY The discovery of the links is carried out by the controller, periodically sending Link Layer Discovery Packets (LLDP) to the switches as PACKET_OUT messages which are then flooded through the network. Those messages are useful to identify links between switches. Consider as an example the network in the figure on the next page; suppose that S4 is the only non-openflow switch. 3

4 S1 sends an LLDP through port 1 which is received on port 1 at S3 and forwarded to the controller within a PACKET_IN message. Thus the controller finds out that there is a link connecting port 1 of S1 to port 1 of S3. Analogously, the connection between port 2 of S1 and port 2 of S2 is registered at the controller and so on and so forth with all the other switches and links. A discovery table is rapidly fulfilled with all direct links at the controller. Even though it is not a scalable choice, LLDP packet may be periodically send to detect failures in the network. Since S4 is a non-openflow switch it is not connected to the controller. In addition to LLDP that are discarded it will receive Broadcast Domain Discovery Packets (BDDP) which are instead broadcasted to S2 and S3 and reported to the controller. Thus, the controller will be informed about an indirect connection between port 2 of S3 and port 1 of S2. Spanning Tree Protocol is also used to avoid loop formation. HOSTS DISCOVERY The final step of the topology discovery consists of knowing where hosts are attached and how it is possible for them to communicate. Suppose H1 wants to ping H2. It forwards an Address Resolution Protocol (ARP) request to S1 on port 3. Being no previously installed rule for the incoming flow, a PACKET_IN containing the ARP request is sent to the controller. The triple <H1, S1, port 3> is added to the hosts table, since the controller discovered the new host. Then a PACKET_OUT is sent to S1, asking to flood the ARP request that cannot be resolved by the controller at the moment. ARP requests are then flooded to S2 and S3. Assuming S2 is reached first, then a PACKET_IN is sent to the controller, a PACKET_OUT with the request to flood is received back and the ARP request reaches H2 via port 3. H2 immediately sends an ARP reply, forwarded to the controller. Once again, the hosts table at the controller may be updated with the entry <H2,S2, port 3> and the path from H2 to H1 can be computed. Hosts Table Host Switch Port H1 S1 3 H2 S2 3 The controller sends a FLOW_MOD message to S2 containing the 4-tuple [<inport: 3, src: H2, dst: H1>, outport:2] and another to S1 with [<inport: 2, src: H2, dst: H1>, outport:3]. Both S1 and S2 update their 4

5 flow tables. A PACKET_OUT is sent by the controller to S2 and forwarded to S1 without its intervention; that is the ping reply. Easily enough the flood H1-H2 is established. H1 performs an ICMP request to S1 which forwards it to the controller inside a PACKET_IN. The controller installs the rules [<inport:3, src: H1, dst: H2>, outport: 2] and [<inport:2, src: H1, dst: H2>, outport: 3] in S1 and S2 respectively and sends a PACKET_OUT to S1 in order to issue the initial request. 5. Conclusions Not so incredibly, the main weakness of SDN resides in its power. In fact, a completely centralized architecture inevitably brings to a series of scalability and reliability issues that comprehend controller failures and control channel failures. Nevertheless, although being designed for Ethernet networks, SDN technology in all its flavours is gaining popularity in a variety of networking scenarios such as data centers, wireless networks and optical backbones. For what concerns the latter, a few OpenFlow extensions exist and have been tested by wellfamous company (e.g. Google) with impressive outcomes that bode well for future deployments; yet, at the moment, elder tools such as NETCONF seem to provide a more reliable alternative. References [1] Tanenbaum, Andrew S., and David J. Wetherall. Computer Networks: Pearson New International Edition: University of Hertfordshire. Pearson Higher Ed, [2] https://www.opennetworking.org/, The Open Networking Foundation Website with plentiful of information about SDN and the OpenFlow architecture. [3] Foundation, Open Networking. "Software-defined networking: The new norm for networks." ONF White Paper (2012). [4] Flowgrammable is a non-profit, all volunteer team, composed of engineers, researchers, and students; dedicated to increasing the adoption of Software Defined Networking. [5] Google by Urs Hoelzle, Open Networking Summit

DEMYSTIFYING ROUTING SERVICES IN SOFTWAREDEFINED NETWORKING

DEMYSTIFYING ROUTING SERVICES IN SOFTWAREDEFINED NETWORKING DEMYSTIFYING ROUTING SERVICES IN STWAREDEFINED NETWORKING GAUTAM KHETRAPAL Engineering Project Manager, Aricent SAURABH KUMAR SHARMA Principal Systems Engineer, Technology, Aricent DEMYSTIFYING ROUTING

More information

Current Trends of Topology Discovery in OpenFlow-based Software Defined Networks

Current Trends of Topology Discovery in OpenFlow-based Software Defined Networks 1 Current Trends of Topology Discovery in OpenFlow-based Software Defined Networks Leonardo Ochoa-Aday, Cristina Cervello -Pastor, Member, IEEE, and Adriana Ferna ndez-ferna ndez Abstract The explosion

More information

OpenFlow: Concept and Practice. Dukhyun Chang (dhchang@mmlab.snu.ac.kr)

OpenFlow: Concept and Practice. Dukhyun Chang (dhchang@mmlab.snu.ac.kr) OpenFlow: Concept and Practice Dukhyun Chang (dhchang@mmlab.snu.ac.kr) 1 Contents Software-Defined Networking (SDN) Overview of OpenFlow Experiment with OpenFlow 2/24 Software Defined Networking.. decoupling

More information

SDN and OpenFlow. Naresh Thukkani (ONF T&I Contributor) Technical Leader, Criterion Networks

SDN and OpenFlow. Naresh Thukkani (ONF T&I Contributor) Technical Leader, Criterion Networks SDN and OpenFlow Naresh Thukkani (ONF T&I Contributor) Technical Leader, Criterion Networks Open 2014 Open SDN Networking India Foundation Technology Symposium, January 18-19, 2015, Bangalore Agenda SDN

More information

Comparisons of SDN OpenFlow Controllers over EstiNet: Ryu vs. NOX

Comparisons of SDN OpenFlow Controllers over EstiNet: Ryu vs. NOX Comparisons of SDN OpenFlow Controllers over EstiNet: Ryu vs. NOX Shie-Yuan Wang Hung-Wei Chiu and Chih-Liang Chou Department of Computer Science, National Chiao Tung University, Taiwan Email: shieyuan@cs.nctu.edu.tw

More information

Securing Local Area Network with OpenFlow

Securing Local Area Network with OpenFlow Securing Local Area Network with OpenFlow Master s Thesis Presentation Fahad B. H. Chowdhury Supervisor: Professor Jukka Manner Advisor: Timo Kiravuo Department of Communications and Networking Aalto University

More information

Software Defined Networking and the design of OpenFlow switches

Software Defined Networking and the design of OpenFlow switches Software Defined Networking and the design of OpenFlow switches Paolo Giaccone Notes for the class on Packet Switch Architectures Politecnico di Torino December 2015 Outline 1 Introduction to SDN 2 OpenFlow

More information

OpenFlow - the key standard of Software-Defined Networks. Dmitry Orekhov, Epam Systems

OpenFlow - the key standard of Software-Defined Networks. Dmitry Orekhov, Epam Systems OpenFlow - the key standard of Software-Defined Networks Dmitry Orekhov, Epam Systems Software-defined network The Need for a New Network Architecture Limitations of Current Networking Technologies Changing

More information

Software Defined Networking

Software Defined Networking Software Defined Networking Dr. Nick Feamster Associate Professor In this course, you will learn about software defined networking and how it is changing the way communications networks are managed, maintained,

More information

Outline. Institute of Computer and Communication Network Engineering. Institute of Computer and Communication Network Engineering

Outline. Institute of Computer and Communication Network Engineering. Institute of Computer and Communication Network Engineering Institute of Computer and Communication Network Engineering Institute of Computer and Communication Network Engineering Communication Networks Software Defined Networking (SDN) Prof. Dr. Admela Jukan Dr.

More information

Open Source Network: Software-Defined Networking (SDN) and OpenFlow

Open Source Network: Software-Defined Networking (SDN) and OpenFlow Open Source Network: Software-Defined Networking (SDN) and OpenFlow Insop Song, Ericsson LinuxCon North America, Aug. 2012, San Diego CA Objectives Overview of OpenFlow Overview of Software Defined Networking

More information

Software Defined Networking What is it, how does it work, and what is it good for?

Software Defined Networking What is it, how does it work, and what is it good for? Software Defined Networking What is it, how does it work, and what is it good for? slides stolen from Jennifer Rexford, Nick McKeown, Michael Schapira, Scott Shenker, Teemu Koponen, Yotam Harchol and David

More information

基 於 SDN 與 可 程 式 化 硬 體 架 構 之 雲 端 網 路 系 統 交 換 器

基 於 SDN 與 可 程 式 化 硬 體 架 構 之 雲 端 網 路 系 統 交 換 器 基 於 SDN 與 可 程 式 化 硬 體 架 構 之 雲 端 網 路 系 統 交 換 器 楊 竹 星 教 授 國 立 成 功 大 學 電 機 工 程 學 系 Outline Introduction OpenFlow NetFPGA OpenFlow Switch on NetFPGA Development Cases Conclusion 2 Introduction With the proposal

More information

Software Defined Networking (SDN) OpenFlow and OpenStack. Vivek Dasgupta Principal Software Maintenance Engineer Red Hat

Software Defined Networking (SDN) OpenFlow and OpenStack. Vivek Dasgupta Principal Software Maintenance Engineer Red Hat Software Defined Networking (SDN) OpenFlow and OpenStack Vivek Dasgupta Principal Software Maintenance Engineer Red Hat CONTENTS Introduction SDN and components SDN Architecture, Components SDN Controller

More information

Software Defined Networking

Software Defined Networking Software Defined Networking Olaf Hagemann SE Director for DACH and HGM ohagemann@extremenetworks.com SDN Drivers User, Device, App Mobility Cloud-Sourcing Consumerization of IT Silo d Workflows Dynamism

More information

Software Defined Networking - a new approach to network design and operation. Paul Horrocks Pre-Sales Strategist 8 th November 2012

Software Defined Networking - a new approach to network design and operation. Paul Horrocks Pre-Sales Strategist 8 th November 2012 Software Defined Networking - a new approach to network design and operation Paul Horrocks Pre-Sales Strategist 8 th November 2012 Agenda What is Software Defined Networking What is the value of Software

More information

Software Defined Networks

Software Defined Networks Software Defined Networks Dr. Uttam Ghosh, CDAC, Bangalore uttamg@cdac.in Outline Networking Planes OpenFlow Software Defined Network (SDN) SDN Origin What is SDN? SDN Architecture SDN Operation Why We

More information

Ten Things to Look for in an SDN Controller

Ten Things to Look for in an SDN Controller Ten Things to Look for in an SDN Controller Executive Summary Over the last six months there has been significant growth in the interest that IT organizations have shown in Software-Defined Networking

More information

SDN, OpenFlow and the ONF

SDN, OpenFlow and the ONF SDN, OpenFlow and the ONF OpenFlow/Software-Defined Networking (SDN) OpenFlow/SDN is emerging as one of the most promising and disruptive networking technologies of recent years. It has the potential to

More information

COMPSCI 314: SDN: Software Defined Networking

COMPSCI 314: SDN: Software Defined Networking COMPSCI 314: SDN: Software Defined Networking Nevil Brownlee n.brownlee@auckland.ac.nz Lecture 23 Current approach to building a network Buy 802.3 (Ethernet) switches, connect hosts to them using UTP cabling

More information

SOFTWARE-DEFINED NETWORKING AND OPENFLOW

SOFTWARE-DEFINED NETWORKING AND OPENFLOW SOFTWARE-DEFINED NETWORKING AND OPENFLOW Freddie Örnebjär TREX Workshop 2012 2012 Brocade Communications Systems, Inc. 2012/09/14 Software-Defined Networking (SDN): Fundamental Control

More information

Ethernet-based Software Defined Network (SDN) Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心

Ethernet-based Software Defined Network (SDN) Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心 Ethernet-based Software Defined Network (SDN) Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心 1 SDN Introduction Decoupling of control plane from data plane

More information

OpenFlow and Onix. OpenFlow: Enabling Innovation in Campus Networks. The Problem. We also want. How to run experiments in campus networks?

OpenFlow and Onix. OpenFlow: Enabling Innovation in Campus Networks. The Problem. We also want. How to run experiments in campus networks? OpenFlow and Onix Bowei Xu boweixu@umich.edu [1] McKeown et al., "OpenFlow: Enabling Innovation in Campus Networks," ACM SIGCOMM CCR, 38(2):69-74, Apr. 2008. [2] Koponen et al., "Onix: a Distributed Control

More information

Understanding OpenFlow

Understanding OpenFlow Understanding OpenFlow Technical Whitepaper June, 2014 Saurabh Kumar Agarwal Email: saurabh29july@gmail.com Abstract Technical overview of OpenFlow Switch Specification, Version 1.0.0, published on December

More information

Security Challenges & Opportunities in Software Defined Networks (SDN)

Security Challenges & Opportunities in Software Defined Networks (SDN) Security Challenges & Opportunities in Software Defined Networks (SDN) June 30 th, 2015 SEC2 2015 Premier atelier sur la sécurité dans les Clouds Nizar KHEIR Cyber Security Researcher Orange Labs Products

More information

SDN/Virtualization and Cloud Computing

SDN/Virtualization and Cloud Computing SDN/Virtualization and Cloud Computing Agenda Software Define Network (SDN) Virtualization Cloud Computing Software Defined Network (SDN) What is SDN? Traditional Network and Limitations Traditional Computer

More information

SDN Overview for UCAR IT meeting 19-March-2014. Presenter Steven Wallace (ssw@iu.edu) Support by the GENI Program Office!

SDN Overview for UCAR IT meeting 19-March-2014. Presenter Steven Wallace (ssw@iu.edu) Support by the GENI Program Office! SDN Overview for UCAR IT meeting 19-March-2014 Presenter Steven Wallace (ssw@iu.edu) Support by the GENI Program Office! Patterns (here, there, everywhere) Patterns (here, there, everywhere) Today s Internet

More information

IxNetwork OpenFlow Solution

IxNetwork OpenFlow Solution IxNetwork OpenFlow Solution Solution Highlights OpenFlow Controller Emulation OpenFlow Switch Emulation OpenFlow Benchmarking Test OpenFlow Switch Conformance Test Key Features Software Defined Networking

More information

Software Defined Networking

Software Defined Networking Software Defined Networking Olaf Hagemann SE Director for DACH and HGM ohagemann@extremenetworks.com SDN Drivers User, Device, App Mobility Cloud-Sourcing Consumerization of IT Silo d Workflows Dynamism

More information

software networking Jithesh TJ, Santhosh Karipur QuEST Global

software networking Jithesh TJ, Santhosh Karipur QuEST Global software defined networking Software Defined Networking is an emerging trend in the networking and communication industry and it promises to deliver enormous benefits, from reduced costs to more efficient

More information

A Coordinated. Enterprise Networks Software Defined. and Application Fluent Programmable Networks

A Coordinated. Enterprise Networks Software Defined. and Application Fluent Programmable Networks A Coordinated Virtual Infrastructure for SDN in Enterprise Networks Software Defined Networking (SDN), OpenFlow and Application Fluent Programmable Networks Strategic White Paper Increasing agility and

More information

WHITE PAPER. SDN Controller Testing: Part 1

WHITE PAPER. SDN Controller Testing: Part 1 WHITE PAPER SDN Controller Testing: Part 1 www.ixiacom.com 915-0946-01 Rev. A, April 2014 2 Table of Contents Introduction... 4 Testing SDN... 5 Methodologies... 6 Testing OpenFlow Network Topology Discovery...

More information

Improving SDN with InSPired Switches

Improving SDN with InSPired Switches Improving SDN with InSPired Switches Roberto Bifulco, Julien Boite, Mathieu Bouet, Fabian Schneider NEC Laboratories Europe Thales Communications & Security ABSTRACT In SDN, complex protocol interactions

More information

Cloud Networking Disruption with Software Defined Network Virtualization. Ali Khayam

Cloud Networking Disruption with Software Defined Network Virtualization. Ali Khayam Cloud Networking Disruption with Software Defined Network Virtualization Ali Khayam In the next one hour Let s discuss two disruptive new paradigms in the world of networking: Network Virtualization Software

More information

SDN Controller Requirement

SDN Controller Requirement SDN Controller Requirement draft-gu-sdnrg-sdn-controller-requirement-00 Rong Gu (Presenter) Chen Li China Mobile Background l Public Cloud && Private Cloud in China Mobile Public Cloud (ecloud.10086.cn)

More information

SDN Software Defined Networks

SDN Software Defined Networks There is nothing more important than our customers SDN Software Defined Networks A deployable approach for the Enterprise 2012 Enterasys Networks, Inc. All rights reserved SDN Overview What is SDN? Loosely

More information

Software-Defined Networking for the Data Center. Dr. Peer Hasselmeyer NEC Laboratories Europe

Software-Defined Networking for the Data Center. Dr. Peer Hasselmeyer NEC Laboratories Europe Software-Defined Networking for the Data Center Dr. Peer Hasselmeyer NEC Laboratories Europe NW Technology Can t Cope with Current Needs We still use old technology... but we just pimp it To make it suitable

More information

SSVP SIP School VoIP Professional Certification

SSVP SIP School VoIP Professional Certification SSVP SIP School VoIP Professional Certification Exam Objectives The SSVP exam is designed to test your skills and knowledge on the basics of Networking and Voice over IP. Everything that you need to cover

More information

Evaluating the SDN control traffic in large ISP networks

Evaluating the SDN control traffic in large ISP networks Evaluating the SDN control traffic in large ISP networks Andrea Bianco, Paolo Giaccone, Ahsan Mahmood Dip. di Elettronica e Telecomunicazioni, Politecnico di Torino, Italy Mario Ullio, Vinicio Vercellone

More information

Software Defined Networking (SDN) - Open Flow

Software Defined Networking (SDN) - Open Flow Software Defined Networking (SDN) - Open Flow Introduction Current Internet: egalitarian routing/delivery based on destination address, best effort. Future Internet: criteria based traffic management,

More information

SSVVP SIP School VVoIP Professional Certification

SSVVP SIP School VVoIP Professional Certification SSVVP SIP School VVoIP Professional Certification Exam Objectives The SSVVP exam is designed to test your skills and knowledge on the basics of Networking, Voice over IP and Video over IP. Everything that

More information

MASTER THESIS. Performance Comparison Of the state of the art Openflow Controllers. Ahmed Sonba, Hassan Abdalkreim

MASTER THESIS. Performance Comparison Of the state of the art Openflow Controllers. Ahmed Sonba, Hassan Abdalkreim Master's Programme in Computer Network Engineering, 60 credits MASTER THESIS Performance Comparison Of the state of the art Openflow Controllers Ahmed Sonba, Hassan Abdalkreim Computer Network Engineering,

More information

Internetworking. Problem: There is more than one network (heterogeneity & scale)

Internetworking. Problem: There is more than one network (heterogeneity & scale) Internetworking Problem: There is more than one network (heterogeneity & scale) Hongwei Zhang http://www.cs.wayne.edu/~hzhang Internetworking: Internet Protocol (IP) Routing and scalability Group Communication

More information

Software Defined Networking with OpenFlow

Software Defined Networking with OpenFlow Software Defined Networking with OpenFlow Siamak Azodolmolky Chapter No. 1 "Introducing OpenFlow" In this package, you will find: A Biography of the author of the book A preview chapter from the book,

More information

What is VLAN Routing?

What is VLAN Routing? Application Note #38 February 2004 What is VLAN Routing? This Application Notes relates to the following Dell product(s): 6024 and 6024F 33xx Abstract Virtual LANs (VLANs) offer a method of dividing one

More information

Sample Configuration Using the ip nat outside source static

Sample Configuration Using the ip nat outside source static Sample Configuration Using the ip nat outside source static Table of Contents Sample Configuration Using the ip nat outside source static Command...1 Introduction...1 Before You Begin...1 Conventions...1

More information

An Intelligent Framework for Vehicular Ad-hoc Networks using SDN Architecture

An Intelligent Framework for Vehicular Ad-hoc Networks using SDN Architecture 435 An Intelligent Framework for Vehicular Ad-hoc Networks using SDN Architecture Balamurugan.V School of Computing Science and Engineering, VIT University Chennai Campus, 600127, Tamilnadu, India. Abstract

More information

Software Defined Networking A quantum leap for Devops?

Software Defined Networking A quantum leap for Devops? Software Defined Networking A quantum leap for Devops? TNG Technology Consulting GmbH, http://www.tngtech.com/ Networking is bottleneck in today s devops Agile software development and devops is increasing

More information

VXLAN: Scaling Data Center Capacity. White Paper

VXLAN: Scaling Data Center Capacity. White Paper VXLAN: Scaling Data Center Capacity White Paper Virtual Extensible LAN (VXLAN) Overview This document provides an overview of how VXLAN works. It also provides criteria to help determine when and where

More information

Software Defined Networking What is it, how does it work, and what is it good for?

Software Defined Networking What is it, how does it work, and what is it good for? Software Defined Networking What is it, how does it work, and what is it good for? Many slides stolen from Jennifer Rexford, Nick McKeown, Scott Shenker, Teemu Koponen, Yotam Harchol and David Hay Agenda

More information

How To Understand and Configure Your Network for IntraVUE

How To Understand and Configure Your Network for IntraVUE How To Understand and Configure Your Network for IntraVUE Summary This document attempts to standardize the methods used to configure Intrauve in situations where there is little or no understanding of

More information

Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs

Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs How To Use MAC-Forced Forwarding with DHCP Snooping to Create Enhanced Private VLANs Introduction In a large network where internal users cannot be trusted, it is nearly impossible to stop a host from

More information

SOFTWARE-DEFINED NETWORKING AND OPENFLOW

SOFTWARE-DEFINED NETWORKING AND OPENFLOW SOFTWARE-DEFINED NETWORKING AND OPENFLOW Eric Choi < echoi@brocade.com> Senior Manager, Service Provider Business Unit, APJ 2012 Brocade Communications Systems, Inc. EPF 7 2012/09/17 Software-Defined Networking

More information

Data Center Infrastructure of the future. Alexei Agueev, Systems Engineer

Data Center Infrastructure of the future. Alexei Agueev, Systems Engineer Data Center Infrastructure of the future Alexei Agueev, Systems Engineer Traditional DC Architecture Limitations Legacy 3 Tier DC Model Layer 2 Layer 2 Domain Layer 2 Layer 2 Domain Oversubscription Ports

More information

Tutorial: OpenFlow in GENI

Tutorial: OpenFlow in GENI Tutorial: OpenFlow in GENI GENI Project Office The current Internet is at an impasse because new architecture cannot be deployed or even adequately evaluated [PST04] [PST04]: Overcoming the Internet Impasse

More information

OpenFlow Switch Specification

OpenFlow Switch Specification (Wire Protocol 0x02) February 28, 2011 ONF TS-002 (Wire Protocol 0x02) ONF Document Type: OpenFlow Spec ONF Document Name: openflow-spec-v1.1.0 Disclaimer THIS SPECIFICATION IS PROVIDED AS IS WITH NO WARRANTIES

More information

Additional Information: A link to the conference website is available at: http://www.curtin.edu.my/cutse2008/index.html

Additional Information: A link to the conference website is available at: http://www.curtin.edu.my/cutse2008/index.html Citation: Veeramani, S. and Gopal, Lenin. 2008. Network monitoring tool, in Curtin University of Technology (ed), Curtin University of Technology Science and Engineering International Conference CUTSE

More information

Internet Working 5 th lecture. Chair of Communication Systems Department of Applied Sciences University of Freiburg 2004

Internet Working 5 th lecture. Chair of Communication Systems Department of Applied Sciences University of Freiburg 2004 5 th lecture Chair of Communication Systems Department of Applied Sciences University of Freiburg 2004 1 43 Last lecture Lecture room hopefully all got the message lecture on tuesday and thursday same

More information

CHAPTER 10 LAN REDUNDANCY. Scaling Networks

CHAPTER 10 LAN REDUNDANCY. Scaling Networks CHAPTER 10 LAN REDUNDANCY Scaling Networks CHAPTER 10 10.0 Introduction 10.1 Spanning Tree Concepts 10.2 Varieties of Spanning Tree Protocols 10.3 Spanning Tree Configuration 10.4 First-Hop Redundancy

More information

OpenFlow Switch Specification

OpenFlow Switch Specification ( Wire Protocol 0x02 ) February 28, 2011 Contents 1 Introduction 3 2 Switch Components 3 3 Glossary 4 4 OpenFlow Tables 5 4.1 Flow Table.............................................. 5 4.1.1 Pipeline Processing......................................

More information

Zarząd (7 osób) F inanse (13 osób) M arketing (7 osób) S przedaż (16 osób) K adry (15 osób)

Zarząd (7 osób) F inanse (13 osób) M arketing (7 osób) S przedaż (16 osób) K adry (15 osób) QUESTION NO: 8 David, your TestKing trainee, asks you about basic characteristics of switches and hubs for network connectivity. What should you tell him? A. Switches take less time to process frames than

More information

Lehrstuhl für Informatik 4 Kommunikation und verteilte Systeme. Auxiliary Protocols

Lehrstuhl für Informatik 4 Kommunikation und verteilte Systeme. Auxiliary Protocols Auxiliary Protocols IP serves only for sending packets with well-known addresses. Some questions however remain open, which are handled by auxiliary protocols: Address Resolution Protocol (ARP) Reverse

More information

http://tinyurl.com/nanog57-roster http://tinyurl.com/nanog57-slides

http://tinyurl.com/nanog57-roster http://tinyurl.com/nanog57-slides Sign-in here: http://tinyurl.com/nanog57-roster Workshop Slides: http://tinyurl.com/nanog57-slides copyright Indiana University Openflow 90 minutes Indiana Center for Network Translational Research and

More information

OpenFlow Overview. Daniel Turull danieltt@kth.se

OpenFlow Overview. Daniel Turull danieltt@kth.se OpenFlow Overview Daniel Turull danieltt@kth.se Overview OpenFlow Software Defined Networks (SDN) Network Systems Lab activities Daniel Turull - Netnod spring meeting 2012 2 OpenFlow Why and where was

More information

Floodlight tutorial. Chen Liang cliang@cs.duke.edu

Floodlight tutorial. Chen Liang cliang@cs.duke.edu Floodlight tutorial Chen Liang cliang@cs.duke.edu What is Floodlight? an Open source SDN controller platform Apache-licensed OpenFlow protocol Java based Enterprise class controller Floodlight overview

More information

Ethernet-based Software Defined Network (SDN)

Ethernet-based Software Defined Network (SDN) Ethernet-based Software Defined Network (SDN) Tzi-cker Chiueh Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心 1 Cloud Data Center Architecture Physical Server

More information

An Overview of OpenFlow

An Overview of OpenFlow An Overview of OpenFlow By Jim Metzler, Ashton Metzler & Associates Distinguished Research Fellow and Co-Founder, Webtorials Editorial/Analyst Division The OpenFlow Protocol Figure 1 depicts the Open Networking

More information

A Presentation at DGI 2014 Government Cloud Computing and Data Center Conference & Expo, Washington, DC. September 18, 2014.

A Presentation at DGI 2014 Government Cloud Computing and Data Center Conference & Expo, Washington, DC. September 18, 2014. A Presentation at DGI 2014 Government Cloud Computing and Data Center Conference & Expo, Washington, DC September 18, 2014 Charles Sun www.linkedin.com/in/charlessun @CharlesSun_ 1 What is SDN? Benefits

More information

OVERLAYING VIRTUALIZED LAYER 2 NETWORKS OVER LAYER 3 NETWORKS

OVERLAYING VIRTUALIZED LAYER 2 NETWORKS OVER LAYER 3 NETWORKS OVERLAYING VIRTUALIZED LAYER 2 NETWORKS OVER LAYER 3 NETWORKS Matt Eclavea (meclavea@brocade.com) Senior Solutions Architect, Brocade Communications Inc. Jim Allen (jallen@llnw.com) Senior Architect, Limelight

More information

SDN AND SECURITY: Why Take Over the Hosts When You Can Take Over the Network

SDN AND SECURITY: Why Take Over the Hosts When You Can Take Over the Network SDN AND SECURITY: Why Take Over the s When You Can Take Over the Network SESSION ID: TECH0R03 Robert M. Hinden Check Point Fellow Check Point Software What are the SDN Security Challenges? Vulnerability

More information

Networking 4 Voice and Video over IP (VVoIP)

Networking 4 Voice and Video over IP (VVoIP) Networking 4 Voice and Video over IP (VVoIP) Course Objectives This course will give delegates a good understanding of LANs, WANs and VVoIP (Voice and Video over IP). It is aimed at those who want to move

More information

INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY

INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK SOFTWARE DEFINED NETWORKING A NEW ARCHETYPE PARNAL P. PAWADE 1, ANIKET A. KATHALKAR

More information

Panel: Cloud/SDN/NFV 黃 仁 竑 教 授 國 立 中 正 大 學 資 工 系 2015/12/26

Panel: Cloud/SDN/NFV 黃 仁 竑 教 授 國 立 中 正 大 學 資 工 系 2015/12/26 Panel: Cloud/SDN/NFV 黃 仁 竑 教 授 國 立 中 正 大 學 資 工 系 2015/12/26 1 Outline Cloud data center (CDC) Software Defined Network (SDN) Network Function Virtualization (NFV) Conclusion 2 Cloud Computing Cloud computing

More information

Real-World Insights from an SDN Lab. Ron Milford Manager, InCNTRE SDN Lab Indiana University

Real-World Insights from an SDN Lab. Ron Milford Manager, InCNTRE SDN Lab Indiana University Real-World Insights from an SDN Lab Ron Milford Manager, InCNTRE SDN Lab Indiana University 1 A bit about IU, the GlobalNOC, and InCNTRE... Indiana University s Network History 1998 University Corporation

More information

NEC contribution to OpenDaylight: Virtual Tenant Network (VTN)

NEC contribution to OpenDaylight: Virtual Tenant Network (VTN) NEC contribution to OpenDaylight: Virtual Tenant Network (VTN) June. 2013 NEC Page 1 Agenda OpenDaylight Virtual Tenant Network - VTN Model Live Demo VTN Implementation Page 2 OpenDaylight Virtual Tenant

More information

Introduction to Software Defined Networking

Introduction to Software Defined Networking Introduction to Software Defined Networking Introduction to SDN Ahmed Maged MENOG 15 Dubai April 2015 @amaged amaged@xegypt.org Agenda What is SDN and What it is not SDN Trends Getting Ready for SDN 2

More information

Network Discovery Protocol LLDP and LLDP- MED

Network Discovery Protocol LLDP and LLDP- MED Network LLDP and LLDP- MED Prof. Vahida Z. Attar College of Engineering, Pune Wellesely Road, Shivajinagar, Pune-411 005. Maharashtra, INDIA Piyush chandwadkar College of Engineering, Pune Wellesely Road,

More information

Frenetic: A Programming Language for OpenFlow Networks

Frenetic: A Programming Language for OpenFlow Networks Frenetic: A Programming Language for OpenFlow Networks Jennifer Rexford Princeton University http://www.frenetic-lang.org/ Joint work with Nate Foster, Dave Walker, Rob Harrison, Michael Freedman, Chris

More information

Network Discovery Protocol LLDP and LLDP- MED

Network Discovery Protocol LLDP and LLDP- MED Network LLDP and LLDP- MED Prof. Vahida Z. Attar College of Engineering, Pune Wellesely Road, Shivajinagar, Pune-411 005. Maharashtra, INDIA Piyush chandwadkar College of Engineering, Pune Wellesely Road,

More information

A denial of service attack against the Open Floodlight SDN controller

A denial of service attack against the Open Floodlight SDN controller A denial of service attack against the Open Floodlight SDN controller Jeremy M. Dover Dover Networks LLC jeremy@dovernetworks.com Open Floodlight is an open-source software-defined network controller,

More information

High Availability Failover Optimization Tuning HA Timers PAN-OS 6.0.0

High Availability Failover Optimization Tuning HA Timers PAN-OS 6.0.0 High Availability Failover Optimization Tuning HA Timers PAN-OS 6.0.0 Revision C 2013, Palo Alto Networks, Inc. www.paloaltonetworks.com Contents Overview... 3 Passive Link State Auto Configuration (A/P)...

More information

SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED

SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED You can read the recommendations in the user, the technical or the installation for SONICWALL SWITCHING NSA 2400MX IN SONICOS ENHANCED 5.7. You'll find the answers to all your questions on the SONICWALL

More information

ProgrammableFlow for Open Virtualized Data Center Network

ProgrammableFlow for Open Virtualized Data Center Network ProgrammableFlow for Open Virtualized Data Center Network Samrat Ganguly NEC Corporation of America Challenges in Today s Data Center and Cloud Networks Performance scaling concerns Complexity scaling

More information

OpenFlow: Load Balancing in enterprise networks using Floodlight Controller

OpenFlow: Load Balancing in enterprise networks using Floodlight Controller OpenFlow: Load Balancing in enterprise networks using Floodlight Controller Srinivas Govindraj, Arunkumar Jayaraman, Nitin Khanna, Kaushik Ravi Prakash srinivas.govindraj@colorado.edu, arunkumar.jayaraman@colorado.edu,

More information

Network Virtualization and Software-defined Networking. Chris Wright and Thomas Graf Red Hat June 14, 2013

Network Virtualization and Software-defined Networking. Chris Wright and Thomas Graf Red Hat June 14, 2013 Network Virtualization and Software-defined Networking Chris Wright and Thomas Graf Red Hat June 14, 2013 Agenda Problem Statement Definitions Solutions She can't take much more of this, captain! Challenges

More information

Switching in an Enterprise Network

Switching in an Enterprise Network Switching in an Enterprise Network Introducing Routing and Switching in the Enterprise Chapter 3 Version 4.0 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives Compare the types of

More information

A Testbed for research and development of SDN applications using OpenFlow

A Testbed for research and development of SDN applications using OpenFlow A Testbed for research and development of SDN applications using OpenFlow Nádia Pires Gonçalves nadia.goncalves@tecnico.ulisboa.pt Instituto Superior Técnico, Universidade de Lisboa ABSTRACT Network technologies

More information

Leveraging SDN and NFV in the WAN

Leveraging SDN and NFV in the WAN Leveraging SDN and NFV in the WAN Introduction Software Defined Networking (SDN) and Network Functions Virtualization (NFV) are two of the key components of the overall movement towards software defined

More information

BROCADE NETWORKING: EXPLORING SOFTWARE-DEFINED NETWORK. Gustavo Barros Systems Engineer Brocade Brasil

BROCADE NETWORKING: EXPLORING SOFTWARE-DEFINED NETWORK. Gustavo Barros Systems Engineer Brocade Brasil BROCADE NETWORKING: EXPLORING SOFTWARE-DEFINED NETWORK Gustavo Barros Systems Engineer Brocade Brasil Software- Defined Networking Summary Separate control and data planes Networks are becoming: More programmatic

More information

Software Defined Networks Virtualized networks & SDN

Software Defined Networks Virtualized networks & SDN Software Defined Networks Virtualized networks & SDN Tony Smith Solution Architect HPN 2 What is Software Defined Networking Switch/Router MANAGEMENTPLANE Responsible for managing the device (CLI) CONTROLPLANE

More information

A Study on Software Defined Networking

A Study on Software Defined Networking A Study on Software Defined Networking Yogita Shivaji Hande, M. Akkalakshmi Research Scholar, Dept. of Information Technology, Gitam University, Hyderabad, India Professor, Dept. of Information Technology,

More information

March 2012 Interoperability Event White Paper

March 2012 Interoperability Event White Paper March 2012 Interoperability Event Version 1.0 April 18, 2012 CONTACT: ONF Testing-Interoperability Working Group Michael Haugh, Chair (mhaugh@ixiacom.com) Rob Sherwood, Vice-Chair (Rob.Sherwood@bigswitch.com)

More information

Procedure: You can find the problem sheet on Drive D: of the lab PCs. 1. IP address for this host computer 2. Subnet mask 3. Default gateway address

Procedure: You can find the problem sheet on Drive D: of the lab PCs. 1. IP address for this host computer 2. Subnet mask 3. Default gateway address Objectives University of Jordan Faculty of Engineering & Technology Computer Engineering Department Computer Networks Laboratory 907528 Lab.4 Basic Network Operation and Troubleshooting 1. To become familiar

More information

OpenFlow and Software Defined Networking presented by Greg Ferro. OpenFlow Functions and Flow Tables

OpenFlow and Software Defined Networking presented by Greg Ferro. OpenFlow Functions and Flow Tables OpenFlow and Software Defined Networking presented by Greg Ferro OpenFlow Functions and Flow Tables would like to thank Greg Ferro and Ivan Pepelnjak for giving us the opportunity to sponsor to this educational

More information

Autonomicity Design in OpenFlow Based Software Defined Networking

Autonomicity Design in OpenFlow Based Software Defined Networking GC'12 Workshop: The 4th IEEE International Workshop on Management of Emerging Networks and Services Autonomicity Design in OpenFlow Based Software Defined Networking WANG Wendong, Yannan HU, Xirong QUE,

More information

Exhibit n.2: The layers of a hierarchical network

Exhibit n.2: The layers of a hierarchical network 3. Advanced Secure Network Design 3.1 Introduction You already know that routers are probably the most critical equipment piece in today s networking. Without routers, internetwork communication would

More information

SOFTWARE DEFINED NETWORKING: A PATH TO PROGRAMMABLE NETWORKS. Jason Kleeh September 27, 2012

SOFTWARE DEFINED NETWORKING: A PATH TO PROGRAMMABLE NETWORKS. Jason Kleeh September 27, 2012 SOFTWARE DEFINED NETWORKING: A PATH TO PROGRAMMABLE NETWORKS Jason Kleeh September 27, 2012 What if you could Build your next data center optimized for highest demands in flexibility, reliability, and

More information

CompTIA Network+ N Official Cert Guide Mapping Guide to CompTIA Network+ Simulator Labs

CompTIA Network+ N Official Cert Guide Mapping Guide to CompTIA Network+ Simulator Labs CompTIA Network+ N10 005 Official Cert Guide Mapping Guide to CompTIA Network+ Simulator Labs Domain 1.0: Network Concepts 1.1 Compare the layers of the OSI and TCP/IP Models TCP/IP Model Layer Matching

More information

Computer Networks. Lecture 3: IP Protocol. Marcin Bieńkowski. Institute of Computer Science University of Wrocław

Computer Networks. Lecture 3: IP Protocol. Marcin Bieńkowski. Institute of Computer Science University of Wrocław Computer Networks Lecture 3: IP Protocol Marcin Bieńkowski Institute of Computer Science University of Wrocław Computer networks (II UWr) Lecture 3 1 / 24 In previous lectures We learned about layer 1

More information

So#ware(Defined-Networking-andthe-Floodlight-OpenFlow-Controller

So#ware(Defined-Networking-andthe-Floodlight-OpenFlow-Controller So#ware(Defined-Networking-andthe-Floodlight-OpenFlow-Controller Mike Cohen Big Switch Networks Mike.cohen@bigswitch.com Faan DeSwardt Symantec Faan_deswardt@symantec.com Big$Switch$/$Symantec$Overview$

More information