Ppt on switching network definition

[30/1/02 -02] The LRIC model of UK mobile network costs, developed for Oftel by Analysys, September 2001 A Manual for the Oftel model Working paper for.

sound techno-economic principles Bottom-up A ‘scorched-node’ approach was adopted, so that the network design reflects the actual number of base stations and switch sites currently deployed w a scorched-node deployment is one that evolves over time and is /Hence the model utilises data from around 9000 postcode sectors to assist in the categorisation of area types in this fashion Definitions of the area types used are as follows: w Urban – postcode sectors with a population density larger than 8178 /


Sanjay Goel, School of Business 1 Internet Communications, Networking & Computer Security Sanjay Goel University at Albany.

communicating entities as well as the actions taken on the transmission and/or receipt of a message or event. Protocol Definition TCP Connection Request TCP Connection Response Get http://www.ibm.com/ Index.html Hi Got the Time? 8:50 Sanjay/:FE Sniffing ARP Detection Sanjay Goel, School of Business 117 Set the ARP table static Replace Hub with Switch –Makes sniffing harder Sniff the network for sniffing –Monitor changes of mapping of IP and MAC address Encryption –Ultimate solution: never transmit plain-text/


CS 414 Review. 2 Operating System: Definition Definition An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface.

waiter (theory) –Condition definitely holds when waiter returns –Easy to reason about the program Mesa: signaler keeps lock and processor (practice) –Condition might not hold when waiter returns –Fewer context switches, easy to support broadcast/2: –TCP –UDP application transport network data link physical application transport network data link physical network data link physical network data link physical network data link physical network data link physical network data link physical logical end-end /


Chapter 4 Network Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 All material copyright 1996-2012.

queueing (delay) and loss due to output port buffer overflow! at t, packets move from input to output one packet time later switch fabric switch fabric Network Layer 4-30 How much buffering?  RFC 3439 rule of thumb: average buffering equal to “typical” RTT times link capacity C/src to dest v  p(v): predecessor node along path from source to v  N: set of nodes whose least cost path definitively known Network Layer 4-97 Dijsktra’s Algorithm 1 Initialization: 2 N = {u} 3 for all nodes v 4 if v adjacent to u /


Platform-Mediated Networks

for convenience. The concepts covered in the next several slides are discussed on p. 14 of “Platform-Mediated Networks: Definitions and Core Concepts,” HBS 807-049). Platform Types One Provider Many Providers One Sponsor Many Sponsors Proprietary Macintosh /and supply-side scale economies, e.g., Windows, eBay, PDF Dominant platforms often difficult to displace due to network effects and switching costs To succeed, entrants generally must offer revolutionary products, e.g., ECNs, fuel-cell cars, IPTV, VoIP/


CS 414 Review. 2 Operating System: Definition Definition An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface.

hold when waiter returns –Fewer context switches, easy to support broadcast Brinch Hansen: signaler must immediately exit monitor –So, notify should be last statement of monitor procedure 22 Deadlocks Definition: Deadlock exists among a set /2: –TCP –UDP application transport network data link physical application transport network data link physical network data link physical network data link physical network data link physical network data link physical network data link physical logical end-end transport/


1 GMPLS networks and optical network testbeds Malathi Veeraraghavan Professor Charles L. Brown Dept. of Electrical & Computer Engineering University of.

controlplane.net IDCP: InterDomain Controller Protocol wsdl - web service definition of message types and formats xsd – definition of schemas used for network topology descriptions and path definitions 81 http://www.csm.ornl.gov/workshops/NetworkingResearchChallenges/agenda.html / Bandwidth-Sharing Mechanisms," IEEE Transactions on Communications, Dec. 08. X. Fang and M. Veeraraghavan, On using circuit-switched networks for file transfers,” in IEEE Globecom, New Orleans, LA, Nov. 2008. X. Zhu, M. E. McGinley/


What is Networking? Lets go see! A network adapter interfaces a computer to a network. The term "adapter" was popularized originally by Ethernet add-in.

As: HyperText Transfer Protocol NETWORKING TERMS (THE SHORT LIST) Definition: In computer networking, a hub is a small, simple, inexpensive device that joins multiple computers together. Many network hubs available today support the/network switch conserves network bandwidth and offers generally better performance than a hub.local area network (LAN)OSI modelnetwork hubspacketsnetwork bandwidth As with hubs, Ethernet implementations of network switches are the most common. Mainstream Ethernet network switches/


1 In The Name of God, The Merciful, The Compassionate Advanced Computer Networks Department of Computer Engineering Sharif University of Technology –

use: statistical multiplexing. Ability to accommodate bursts. Ability to accommodate bursts. S1 D1 S2 D2 13 (Switched) Network Topologies Star Ring Tree Irregular 14 Protocol Set of rules that allow peering entities to communicate. Set of rules/statistical system. Transmission errors defined using probabilities: transmission medium modeled as a statistical system. 89 Error Probabilities 1 Definitions: Definitions: –P b probability of single bit error (bit error rate); constant and independent for each bit. /


1 Mark Gleeson (01) 896 2666 Distributed Systems Group, Trinity College, Dublin 14.02.2009 Diploma in Health Informatics Networks.

802.11b/g 12 Section 2 - Network characteristics What Are Networks Network Types and Topologies Communication concepts Basic Message Types 13 What are Networks? Tanenbaum’s definition: "A network is an interconnected collection of autonomous computers" IPv4 IPv6 ATM TCP/IP RIP OSPF ??? 14 Types of Networks Bus-based networks –Original Ethernet (802.3) Star-based networksSwitched (Modern) Ethernet (802.3ab) Ring-based networks –FDDI –Token Ring (802.5) Wireless/


OMNET++ AND MIXIM FRAMEWORK Introduction 1. What is OMNeT++?  OMNeT++ is a component-based, modular and open-architecture discrete event network simulator.

//... submodules: //... connections: node1.output --> node2.input; node1.input <-- node2.output; //... endmodule Network definitions network wirelessLAN: WirelessLAN parameters: numUsers=10, httpTraffic=true, ftpTraffic=true, distanceFromHub=truncnormal(100,60); endnetwork Simulation / // Host with an Ethernet interface // module EtherStation { parameters:... gates:... input in; // connect to switch/hub, etc output out; submodules: app: EtherTrafficGen; llc: EtherLLC; mac: EtherMAC; connections: app.out /


ITEC 275 Computer NetworksSwitching, Routing, and WANs Week 5 Robert D’Andrea Some slides provide by Priscilla Oppenheimer and used with permission.

divide and conquer the problem and develop it. – Spanning Tree Protocol, fast convergence network routers. – VLANs, small bandwidths to switches rather than broadcasting. – Redundancy, provides availability, performance, and scalability. – VPNs, use a third party communication media securring data. Introduction Definition Topology A topology is a map of an internetwork that indicates network, segments, interconnection points, and user communities. The purpose of the map is/


Revised Spring 2006 Chap 1 - Large Enterprise Networks 1 Large Enterprise Networks Chapter 1 Network Management, MIBs, and MPLS Stephen B. Morris Student:

2006 Chap 1 - Large Enterprise Networks19 Why is Network Management Important? Maintains Network Availability Maintains Network Availability Network keeps running Network keeps running Law of Five Nines: The definition of system uptime or availability as 99.999%, or/data across a physical connection Examples: ATM, Frame Relay, Ethernet Switch Examples: ATM, Frame Relay, Ethernet Switch Layer 3 – Network Layer Layer 3 – Network Layer Ensures packets of information reach destination across multiple point-to-/


1 Lecture 7: Interconnection Network Part I: Basic Definitions Part II: Message Passing Multicomputers.

II: Message Passing Multicomputers 2 Part I: Basic Definitions A network is characterized by its topology, routing algorithm, switching strategy, and flow control mechanism. 3 Basic Definitions Topology : the physical interconnection structure of the network graph; regular (most parallel machines)or irregular (WAN). Routing algorithm : determines which routes a message may follow through the network graph. Switch strategy : determines how the data in a message traverses its/


1 Scalable Interconnection Networks. 2 Scalable, High Performance Network At Core of Parallel Computer Architecture Requirements and trade-offs at many.

channels available per node – link utilization  = MC/Nh l < 1 17 Saturation 18 Outline Introduction Basic concepts, definitions, performance perspective Organizational structure Topologies Routing and switch design 19 Organizational Structure Processors datapath + control logic control logic determined by examining register transfers in the datapath Networks links switches network interfaces 20 Link Design/Engineering Space Cable of one or more wires/fibers with connectors at the/


Dynamic Resource Allocation over GMPLS Optical Networks Presented to IPOP 2005 February 21, 2005 Tokyo, JP Jerry Sobieski Mid-Atlantic Crossroads (MAX)

Principles: –Standard practice of OEO engineering at every node is unnecessary in metro/regional networks Allow the user/client to define the transport –Core switching nodes should be all-optical: Any wavelength on any port to any other port/nasa.gov, Correlator ); // NASA Goddard } C++ Code invocation example: eVLBI = new ASTDL::Topo( “Topo_vlbi_200406”); // Get the topology definition Stat = eVLBI.Create(); // Make it so! corr1.usno.navy.mil mkiv.oso.chalmers.se pollux.haystack.mit.edu ggao1.gsfc.nasa.gov /


Network Convergence Looking Forward Networking Research Challenges Workshop September 28, 2008 Seattle, Washington Tom Lehman Information Sciences Institute.

are the current choice future may see a mix of both Key Control Plane Key Capabilities IntraDomain InterDomain Architecture Definition and Agreements are the most important issue to be resolved amongst external organizations. However, there are many /SONET/SDH (RFC 4257) GFP/LCAS interface discovery (OSPF-TE, RSVP-TE implications) Multi-layer/multi-region (MRN) networks drafts: Interface switching capability (ISC), unified TE database Drafts on multi-domain routing (OSPF-TE, O-BGP), no temporal state Other /


Introduction to computer networking Objective: To be acquainted with: The definitions of networking Network topology Network peripherals, hardware and.

, there will be at least two routers used. Hardware, Software and Networks Peripherals (cont.) Routers Hardware, Software and Networks Peripherals (cont.) Switch A network switch is a computer networking device that connects network segments. Low-end network switches appear nearly identical to network hubs, but a switch contains more "intelligence" (and a slightly higher price tag) than a network hub. Network switches are capable of inspecting data packets as they are received, determining the/


ITEC 275 Computer NetworksSwitching, Routing, and WANs Week 5 Robert D’Andrea Some slides provide by Priscilla Oppenheimer and used with permission.

map is to show the geometry of the network, not the physical geography or technical implementation. External Network Topology Internal Network Topology Detail Description of External Network Topology What is Convergence? Definition of Convergence The speed and ability of a/frames - Forwarding a port the is learning MAC addresses and forwarding user frames. Rapid Spanning Tree Protocol Converged switched network Bridge port roles - Root port assigned on a non-root bridge, provides lowest cost path to the root/


1 Modelling and Simulation of Ethernet Based Networked Mechanical Systems Department of Mechanical & Industrial Engineering Concordia University Control.

so: to another so: - Allows to build large,multi collision domain network - Allows to build large,multi collision domain network - Packet-based switches use one of three methods for routing - Packet-based switches use one of three methods for routing traffic: traffic: 1. Cut-/ dtx_NIC T drx_NIC T dround T1 T1 T2 T2 T dtx_p T drx_p T switch Latency definitions for the Switch test 3COM 3C16477 Baseline Gigabit Switch time delay test 47 Testing and Verification (Cont.) Validating the accuracy by comparing the/


Local-Area-Network (LAN) Architecture Department of Computer Science Southern Illinois University Edwardsville Fall, 2013 Dr. Hiroshi Fujinoki E-mail:

/012 Receiver Sender Routers exchange routing tables Router Network D Network C Network (= LAN or WAN) A Network B Router = intelligent packet forwarding device between two network domains CS 447 Networks and Data Communication Switch and Routers Now we know: Layer-3 Switch Switch Router Bridge Repeater Switching Hub Switch & Router/013 CS 447 Networks and Data Communication Switch and Routers What is the definition of “switch”, then?  Network connecting device  Packet forwarding is performed by/


1 Two-Dimensional Route Switching in Cognitive Radio Networks: A Game-Theoretical Framework Qingkai Liang, Xinbing Wang, Xiaohua Tian, Fan Wu, Qian Zhang.

, Path Loss, etc. Total Energy Costs: Total Energy Costs:  Switching Cost  One switching costs  Total Energy Costs : Total Costs=Delay Costs+Energy Costs+Switching Costs 15 Outline Introduction Network Model Complete-Information Scenario  Game Formulation  Potential Game  Nash /the Finite Improvement Property (FIP)  Remark: Any minimum can be reached within finite improvement steps! Definition 1: Definition 1: A game is referred as the potential game if and only if there exists a potential/


CS 414 Review. 2 Operating System: Definition Definition An Operating System (OS) provides a virtual machine on top of the real hardware, whose interface.

waiter (theory) –Condition definitely holds when waiter returns –Easy to reason about the program Mesa: signaler keeps lock and processor (practice) –Condition might not hold when waiter returns –Fewer context switches, easy to support broadcast/2: –TCP –UDP application transport network data link physical application transport network data link physical network data link physical network data link physical network data link physical network data link physical network data link physical logical end-end /


Switched LAN Architecture W.lilakiatsakun. Hierarchical LAN Model (1)

no precise definition of network traffic flow, for the purposes of traffic flow analysis we can say that network traffic is the amount of data sent through a network for a given period of time. –Analyzing the various traffic sources and their impact on the network, allows you to more accurately tune and upgrade the network to achieve the best possible performance. Considerations for hierarchical network switches (2/


8.+15. Mar. 20061INF-3190: Switching and Routing Switching and Routing Foreleser: Carsten Griwodz

I Initialization procedure New IS Sends a HELLO message over each L2 channel Adjacent IS Responds with its own address, unique within the network 8.+15. Mar. 200684INF-3190: Switching and Routing Link State Routing 2. Phase: measure the "distance" Definition of distance needed Usually delay Where to measure? Uses & Looks up Data packets Incoming lines Outgoing lines Forwarding Process Routing Process Topology/


1 Course Medical Statistics with Informatics Internet and computer networks.

http://comminfo.rutgers.edu/~tefko/Courses/e530/index.htm/) 6 Dictionary definitions Dictionary definitions search COMPUTING (transitive verb) to examine a computer file, disk, database, or network for particular information engine something that supplies the driving force or /where packet originates 3.Reassembling instructions, if original data was split 4.Data that is being transferred Packet Switching TCP/IP Main suite of protocols used on Internet Transmission Control Protocol (TCP) –Prepares data for /


FlowVisor Can the Production Network Be the Testbed? Rob Sherwood, Glen Gibb, Kok-Kiong Yap, Guido Appenzeller, Martin Casado, Nick McKeown, Guru Parulkar.

forward to port 1 Only Port 80 packet forward to port 1 New flow Message 20 Slice Definition Policy Slice policy = network resources + flowspace + allocated controller info (one file per slice) Network resources = link bandwidth available + the budget for switch CPU + forwarding table entries + Network topology(list of network nodes and ports) Flowspace(for each slice) = an ordered list of tuples flowspace has "allow, read-only/


Introduction to computer networking Objective: To be acquainted with: The definitions of networking Network topology Network peripherals, hardware and.

, there will be at least two routers used. Hardware, Software and Networks Peripherals (cont.) Routers Hardware, Software and Networks Peripherals (cont.) Switch A network switch is a computer networking device that connects network segments. Low-end network switches appear nearly identical to network hubs, but a switch contains more "intelligence" (and a slightly higher price tag) than a network hub. Network switches are capable of inspecting data packets as they are received, determining the/


Introduction to computer networking

: To be acquainted with: The definitions of networking Network topology Network peripherals, hardware and software Definitions 1.1 Network Definition A network can be defined as two or more computers connected together in such a way that they can share resources. The purpose of a network is to share resources. Definitions (cont..) A resource may be: A file A folder A printer A disk drive Or just about anything else/


Recommendation L.1410 : ICT Goods, Networks and Services Future Recommendations on ICT projects and ICT in Cities Jean-Manuel Canet, Orange Business Services.

and data quality 5 L.1410 Goods, Networks and Services General requirements Goal and scope definition Functional unit definition System boundaries definition Cut-off rules Data quality requirements Life Cycle/Networks and Services ICT product system : networks Enterprise Fixed Access Access Switch Aggn Switch Core Sw Firewall/ WAN Metro/Edge Network Metro Router Metro Router Ethernet Switch ROADM Ethernet Switch Ethernet Switch ROADM OTN Core Router Core Router Core Router Core Router Core Network/


The Virtual Local Area Network (VLAN). Introduction Defining VLANDefining VLAN Viewing VLAN Membership by Port GroupViewing VLAN Membership by Port Group.

between distinct VLAN Another ways you can view VLAN definition is through layer 3 based. In layer three based information, Virtual Local Area Network (VLAN) takes into account of protocol type (if multiple protocols are supported) or network layer address (for example, subnet address for TCP/IP networks) in determining VLAN membership. Even though a switch inspects a packet’s IP address to determine VLAN/


Chapter 8: Troubleshooting Converged Networks

QoS. Video is much more bandwidth intensive and very bursty. A high-definition stream can require more than 20-Mbps bandwidth for delivery over the network. Video packet sizes are much larger. Each type of video application has /switched network in the figure the video clients reside in two VLANS, 10 and 20, implemented in the access switch.  The access switch is serviced by two distribution switches that connect the clients to the campus network, where the video server resides. The distribution switches /


Computer Networking Michaelmas/Lent Term M/W/F 11:00-12:00 LT1 in Gates Building Slide Set 2 Andrew W. Moore 2014-2015 1.

OXFORD GLASGOW UCL DestinationNext Hop GLASGOW4 OXFORD5 EDIN2 UCL3 Forwarding Table 111010010 EDIN switch#2 switch#5 switch#3 switch#4 8 Router definitions 1 2 3 4 5 … N-1 N N = number of external router “ports” R = speed (“line rate”) of a port Router capacity = N x R R bits/sec Networks and routers AT&T BBN NYU UCB core edge (ISP) edge (enterprise/


Copyright 2008 Andrew P. Snow All Rights Reserved 1 Tutorial: “Protecting Critical Telecommunications and Networking Infrastructure” The Seventh International.

Interdependencies of the Public Switched Network PSTN and Wireless PSTN and Voice over IP (VoIP) PSTN and Internet PSTN and Virtual Private Networks Copyright 2008 Andrew P. Snow All Rights Reserved 85 Circuit to Packet Switch Interface Copyright 2008 Andrew / could suffer: –Inconvenience –Lost revenue/profit –Decreased safety Copyright 2008 Andrew P. Snow All Rights Reserved 137 Availability Definition 1 Retrospective View UP DOWN t1t1 t2t2 t7t7 t6t6 t5t5 t4t4 t3t3 A = fraction of time “Up” over some/


APNOMS2002 Tutorial, Young-Tak Kim, Advanced Networking Technology Lab. (ANT Lab.), YeungNam Univ. 1 DiffServ-aware-MPLS Networking: a Promising Traffic.

network (Node : aggregated traffic generator, Link : session connectivity) IP Layer network (Node : IP router, Link : IP transit connectivity) MPLS Layer network (Node : MPLS LSR (Label Switching Router), Link : Label Switched Path (LSP)) Optical network (Node : OADM, OXC Link : Optical WDM/ DWDM link) Packet Switch network/ RED, WRED, Flow WRED Traffic Class Definition (class-map): IP address, precedence, DSCP, MAC address, interface, protocol Policy Definition (policy-map): edge QoS feature (rate-limiting/


Traffic Measurement for Network Operations

IP Design Philosophy: Main Goals [Clark’88] Effective multiplexed utilization of existing networks Packet switching, not circuit switching Continued communication despite network failures Routers don’t store state about ongoing transfers End hosts provide key / per-packet operations & memory Following sections: sacrifice flexibility for speed Packet Monitoring Packet Monitoring: Outline Definition Passively collecting IP packets on one or more links Recording IP, TCP/UDP, or application-layer traces/


Context-Dependent Network Agents Specific technology goals of funded effort: distributed computation and control applications of synchronized sampling.

vs temporary faults) Better control (preventing cascading outages) Texas A&M University Protective Relaying Introduced New Evaluation Approach: Definition of future use of modeling and simulation tools (local and system events) Use of Matlab customized software for evaluation / useful for power networks? University of Illinois at Urbana Champaign A Sample Power Network Failure G3 G4 G6 G5 G2 G1 Load load Circuit Breaker overload G1 or G2 could become unstable unless controllers are switched The open of /


Upcoming Requirements from the US Law Enforcement Community to Technically Facilitate Network Wiretaps TERENA, Lyngby Denmark Tuesday, May 22nd, 2007 4-5:30PM.

example, if a connection is coming from Jack #11 on Switch #34, your network wiring documentation might tell you that connection goes to Williams Hall/switch fabric" (where "large" in this case refers to a nationwide network interconnecting institutions from one side of the country to the other) – thats clearly a wide area L2 network. Where would the "Internet Gateway" be on that sort of network? (Or would this just be another example of a "private network," albeit an extraordinarily large one, by definition/


Sanjay Goel, School of Business 1 Internet Communications, Networking & Computer Security Sanjay Goel University at Albany.

communicating entities as well as the actions taken on the transmission and/or receipt of a message or event. Protocol Definition TCP Connection Request TCP Connection Response Get http://www.ibm.com/ Index.html Hi Got the Time? 8:50 Sanjay/:FE Sniffing ARP Detection Sanjay Goel, School of Business 92 Set the ARP table static Replace Hub with Switch –Makes sniffing harder Sniff the network for sniffing –Monitor changes of mapping of IP and MAC address Encryption –Ultimate solution: never transmit plain-text/


© Copyright 1997, The University of New Mexico 2-1 Definitions Architecture Proprietary Systems De facto Standards Standards.

of New Mexico 2-5 Definitions Open Systems Interconnection Standards –Packet Switched Public Data Network (PSPDN) –Circuit Switched Public Data Network (CSPDN) –Public Switched Telephone Network (PSTN) –Integrated Services Digital Network (ISDN) –Local Area Network (LAN) © Copyright 1997, The University of New Mexico 2-6 Definitions V-series –Connecting equipment to a Public Switched Telephone Network (PSTN) X-series –Connecting equipment to a Public Switched Data Network (PSDN) I-series –Connecting/


MPLS Tutorial Bilel N. Jamoussi, Ph.D. Senior Network Architect Carrier Data Networks

- Label binding has been received from upstream LSR LSP formation ‘flows’ from egress to ingress Definition Example Cisco’s Tag Switching IBM’s ARIS Comparison Labels can be exchanged with less delay Does not depend on availability of /11 - 16, 1999 - LAS VEGAS, NEVADA Tutorial Outline Overview Label Encapsulations Label Distribution Protocols MPLS & ATM IETF Status Nortel Networks Activity Summary MPLS Tutorial 65 INFORM ’99 - APRIL 11 - 16, 1999 - LAS VEGAS, NEVADA Nortel’s Activity IETF Interoperability/


1 Tutorial on Network Layers 2 and 3 Radia Perlman Intel Labs

Why this whole layer 2/3 thing? Myth: bridges/switches simpler devices, designed before routers OSI Layers –1: physical –2: data link (nbr-nbr, e.g., Ethernet) –3: network (create entire path, e.g., IP) –4 end-to-end (e.g., TCP, UDP) –5 and above: boring 10 Definitions Repeater: layer 1 relay 11 Definitions Repeater: layer 1 relay Bridge: layer 2 relay 12/


Resource Allocation for Full-Duplex Communication and Networks

Theoretical Study Applications Conclusions Matching Theory Game Theory Basics Introduction to Matching Theory Classification Stable Marriage problem Definitions Optimal Matching Algorithms Variants A Many-to-one Matching Example A Many-to-many Matching Example / FD communications: FD-MIMO, FD-Relay, FD-OFDMA, and FD-HetNet networks. The associated resource allocation problems are discussed: e.g. mode switch, power control, link selection and pairing, interference-aware beamforming, and subcarrier assignment/


IPC-T-50 TERMS AND DEFINITIONS

space character. Alternating Current (ac) 21.1793 A current that varies with time, commonly applied to a power source that switches polarity many times per second, in the shape of a sinusoidal, square, or triangular wave. Alternative Hypothesis 93.1324 / by depositing a conductive material using screening, plating or evaporating techniques. IPC-T-50 TERMS AND DEFINITIONS Film Network 53.0502 An electrical network composed of thin‑film and/or thick‑film components on a base material. Final Seal 76.1397/


1 GMPLS optical networks Malathi Veeraraghavan Professor Charles L. Brown Dept. of Electrical & Computer Engineering University of Virginia

on Parallel and Distributed Systems, 2009. –X. Fang and M. Veeraraghavan, On using circuit-switched networks for file transfers,” in IEEE Globecom, New Orleans, LA, Nov. 2008. –X. Zhu, X. Zheng, and /://www.controlplane.net IDCP: InterDomain Controller Protocol wsdl - web service definition of message types and formats xsd – definition of schemas used for network topology descriptions and path definitions 49 http://www.csm.ornl.gov/workshops/NetworkingResearchChallenges/agenda.html Talk by/


2007 © SWITCH TNC2007 Extending SWITCH Public Wireless LAN with EAP-SIM Kurt Baumann SWITCHmobile Project Leader

: Implementation ETHZ - Reconfiguration WLAN - Implementation Swisscom Components Roll-out: SWITCH leads the Roll-out - Definition of Roll-out plan - Repository: FAQ: Implementation EAP-SIM 2007 © SWITCH 15 TNC2007 EAP-SIM Architecture Ideas SCM Router = Swisscom Mobile Router 2007 © SWITCH 16 TNC2007 EAP-SIM Architecture High-level concept EAP-SIM: Requirements - Implementation top of 802.1X-enabled network - Separate VLAN, SSID: MOBILE-EAPSIM - Swisscom-like-Implementation/


1 2a. Introduction to Data Communications and Networking 1. Communication Link 2. General Definition 3. Example of Computer Communication Systems 4. Networking.

Reference Model a. Protocol Hierarchies b. Internet Layer c. Transport Layer d. Application Layer e. Host-to-Network Layer 9. Packet Switching and Circuit Switching 10.Connect-oriented and Conn.less Services (T. pg. 1-84) 2 1. Communication Link Data Communication Link 3 2.General Definitions Information is the meaning that a human being assigns to data by means of the conventions applied/


Telecommunication Management Network, TMN * * Mani Subramanian “Network Management: Principles and practice”, Addison-Wesley, 2000.

registered name of the object class under the ISO registration tree Templates used to combine definitions of attributes, operations and notifications OSI vs. SNMP OSI Mgmt (CMIP)Internet Mgmt (/CMIS: Common Management Information System Manager/Agent Interworking Management Service Architecture Vendor dependent Management Service Architecture  Network Element Layer, NEL o Comprise NEs such as switches, routers, transmission facilities o Managed by the OSFs residing in the element management layer  Element/


1 Internet Technology Fundamentals. 2 Why Study Networks? Integral part of society Work, entertainment, community Pervasive Home, car, office, school,

scale Service Providers Administrators and ISPs Management, revenue, deployment 6 What is Internet Technology? What is an internet? –Network of networks What is the Internet? –A global internet based on the IP protocol To what does “Internet technology” refer/your choices? 64 Example: Circuit Switching vs. Packet Switching Goal: Determine which is faster –Formal definition: Least time to move a fixed amount of data Approach: –Compute time where circuit switching and packet switching are equal based on all /


Chapter 1: Fundamentals1 Computer Networks An Open Source Approach Chapter 1: Fundamentals Ying-Dar Lin, Ren-Hung Hwang, Fred Baker.

Summary Chapter 1: Fundamentals 3 1.1 Requirements for Computer Networking Definition of a computer network:  A shared platform through which a large number of users and applications communicate with each other. Connectivity: who and how to connect? Scalability: how many to connect? Resource sharing: how to utilize the connectivity?  Packet switching in datacom  Circuit switching in telecom Chapter 1: Fundamentals 4 Connectivity: Node, Link/


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