Configuring your VLAN. Presented by Gregory Laffoon

Size: px
Start display at page:

Download "Configuring your VLAN. Presented by Gregory Laffoon"

Transcription

1 Configuring your VLAN Presented by Gregory Laffoon 1

2 Overview of Networking Terms

3 Networking Terms Overview OSI Model Defines a networking framework for implementing protocols in seven layers Control is passed from one layer to the next, starting at the application layer in one station, proceeding to the bottom layer, over the channel to the next station and back up the hierarchy 3

4 OSI Model Of the 7 layers, we are concerned with the bottom 3 layers. The top 4 layers are used more on host machines to support TCP/UDP, HTTP, other applications Application Layer (Layer 7) Presentation Layer (Layer 6) Session Layer (Layer 5) Transport Layer (Layer 4) Network Layer (Layer 3) Data Link Layer (Layer 2) Physical Layer (Layer 1)

5 OSI Models OSI Layer 1 This layer is the transmission media» Category 5e and fiber optic cabling» Radio signal in terms of wireless Performs transmission of raw bits 5

6 OSI Models OSI Layer 2 Data packets are encoded and decoded into bits. Divided into 2 sub-layers» MAC (Media Access Control) Controls how hosts on the network gain access to the data and permission to transmit it» LLC (Logical Link Control) Controls frame synchronization, flow control, and error checking 6

7 OSI Models OSI Layer 3 Routing and forwarding functions Handles end to end addressing Provides the mean for separate networks to talk to each other IP (Internet Protocol) is at this level 7

8 Definition of Network Device Types 8

9 Network Device Types There are 5 general devices: Repeater Hub Bridge Switch Router 9

10 Network Device - Repeater Repeater A Layer 1 device An electronic device to receive a signal on a port and retransmits it at a higher level or higher power Used when you need to go farther distances than the cabling will allow Usually has 2 ports (IN/OUT) 10

11 Network Device - Hub Hub A Layer 1 device A device that contains multiple ports Has no logic or brain Simply passes data out all other ports In simple terms, it is a multi-port repeater 11

12 Network Device - Bridge Bridge A Layer 2 device Connects multiple Layer 2 segments Has logic or brain Learns what Layer 2 MAC addresses are associated with each port Receives frames destined for a particular MAC address and only sends the data out the correct port 12

13 Switch A layer 2 device Network Device - Switch Basically a multi-port bridge Learns MAC Addresses to Port mappings Doesn t flood data out every port unless the MAC address hasn t been learned 13

14 Network Device - Router Router A Layer 3 device Connects multiple Layer 3 networks Uses Layer 3 addressing (IP addressing) Allows communication between different Layer 2 segments Breaks up broadcast domains 14

15 Broadcast Domain? A broadcast domain is a network segment in which any network device can transmit data directly to another device without going through a router A layer 3 device breaks up a broadcast domain 15

16 So what is a VLAN?

17 What is a VLAN? A virtual local area network (VLAN) is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain regardless of their physical location. 17

18 Traditional LAN A traditional LAN would require all users of the same requirements and same IP subnet (broadcast domain) be connected to the same equipment. 18

19 By utilizing VLANs, the same users can be spread out over various geographical locations and still remain in their same IP subnet (broadcast domain). VLAN-based LAN 19

20 How VLANs work? 20

21 How VLANs Work? VLANs are identified by a number Valid ranges On a VLAN-capable switch, you assign ports with the appropriate VLAN number The switch then only allows data to be sent between ports with the same VLAN 21

22 How VLANs Work? Since almost every network is larger than a single switch, there needs to be a way to have traffic sent between two different switches One way to do it is to assign a port on each switch with a VLAN and run a cable between the switches Not very feasible or cost effective 22

23 How VLANs work? For example, if there were 6 hosts on each switch on 6 different vlans, you would need 6 ports on each switch to connect the switches together. This would mean that if you had 24 different vlans you could only have 24 hosts on a 48 port switch 23

24 How VLANs work? There was a standard develop to make it so that a single connection between two switches could be used to send traffic for all vlans 802.1q Provides a VLAN tag in front of the Layer 2 frame 24

25 How VLANs work? You enable 802.1q tagging (trunking) on the ports between the switches The switch receives the frame with the 802.1q header and strips it off It determines what VLAN and sends the data to the appropriate port 25

26 Benefits of VLANs 26

27 Benefits of VLANs Geographically separated users on the same IP subnet (broadcast domain) Limit the size of broadcast domains and limit broadcast activity Security benefits by keep hosts separated by VLAN and limiting what devices can talk to those hosts 27

28 Benefits of VLANs Cost savings as you don t need additional hardware and cabling Operational benefits because changing a user s IP subnet (Broadcast Domain) is in software 28

29 Drawbacks of VLANs VLANs were used to allow grouping of users together with the same requirements and allowing them to be in separate locations The major drawback is that the general idea is to make all users that need the same requirements be in the same VLAN 29

30 Drawbacks of VLANs VLANs work at Layer 2 and that layer doesn t handle redundancy in an efficient manner So when the network becomes mission critical, it is hard to provide fast convergence times for users when utilizing VLANs that span across multiple buildings 30

31 Drawbacks of VLANs VLANs were and still are a viable method for separating users into groups Today, redundancy is very important so to make the network stable the following guidelines should be followed: 31

32 Drawbacks of VLANs VLANs should still be used to separate and group common users VLANs shouldn t span across the entire network They should remain in a building Common users in another building should be on a separate VLAN 32

33 Drawbacks of VLANs Then the two common user groups would utilize a router to talk to each other 33

34 Questions & Answers

LOCAL AREA NETWORKS Q&A Topic 4: VLAN

LOCAL AREA NETWORKS Q&A Topic 4: VLAN A. Indicate whether the sentence or statement is true or false: 1. VLANs are more flexible in handling moves and additions of ports than routers 2. VLANs logically segment the physical LAN infrastructure

More information

LANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs, connecting devices are needed.

LANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs, connecting devices are needed. LAN interconnecting devices INTRODUCTION LANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs, connecting devices are needed. Connecting devices

More information

Table of Contents 1 VLAN Configuration 1-1

Table of Contents 1 VLAN Configuration 1-1 Table of Contents 1 VLAN Configuration 1-1 Overview 1-1 Introduction to VLAN 1-1 VLAN Fundamentals 1-2 Types of VLAN 1-3 Introduction to Port-Based VLAN 1-3 Configuring a VLAN 1-4 Configuration Task List

More information

Network Protocols - Revision

Network Protocols - Revision Network Protocols - Revision Luke Anderson luke@lukeanderson.com.au 18 th May 2018 University Of Sydney Overview 1. The Layers 1.1 OSI Model 1.2 Layer 1: Physical 1.3 Layer 2: Data Link MAC Addresses 1.4

More information

Data Communication and Network. Introducing Networks

Data Communication and Network. Introducing Networks Data Communication and Network Introducing Networks Introduction to Networking Computer network, or simply network Refers to the connection of two or more computers by some type of medium You can connect

More information

The following steps should be used when configuring a VLAN on the EdgeXOS platform:

The following steps should be used when configuring a VLAN on the EdgeXOS platform: EdgeXOS VLANs VLAN Overview This document provides an overview of what a VLAN is and how it is configured on the EdgeXOS platform. Use the step-by-step guide below to configure a VLAN on the Edge appliance

More information

ก ก Information Technology II

ก ก Information Technology II ก ก 202103 Information Technology II ก ก ก ก ก (LAN), ก LAN, ก ก (LAN) ก ก ก LAN ก LAN ก LAN Topology Bus LAN Star LAN Ring LAN Wireless LAN Wireless LAN Wireless ก (LAN) ก ก ก LAN ก LAN WAN ก Random Access

More information

ITEC 3800 Data Communication and Network. Introducing Networks

ITEC 3800 Data Communication and Network. Introducing Networks ITEC 3800 Data Communication and Network Introducing Networks Introduction to Networking Computer network, or simply network Refers to the connection of two or more computers by some type of medium You

More information

CS343: Data Communication LAN Overview

CS343: Data Communication LAN Overview CS343: Data Communication LAN Overview by Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Guwahati E-mail: manaskhatua@iitg.ac.in Communication Network Topology Topology refers to the way in which

More information

MTA_98-366_Vindicator930

MTA_98-366_Vindicator930 MTA_98-366_Vindicator930 Number: 98-366 Passing Score: 700 Time Limit: 45 min File Version: 1.0 http://www.gratisexam.com/ Microsoft Technology Associate Networking Fundamentals MTA 98-366 Exam A QUESTION

More information

Switched Ethernet Virtual LANs

Switched Ethernet Virtual LANs Switched Ethernet Virtual LANs Computer Networks Lecture 4 http://goo.gl/pze5o8 Switched Ethernet 2 LAN Switches Behave as bridges (operates in the logical tree topology) Switching is implemented by hardware

More information

Chapter 3 Part 2 Switching and Bridging. Networking CS 3470, Section 1

Chapter 3 Part 2 Switching and Bridging. Networking CS 3470, Section 1 Chapter 3 Part 2 Switching and Bridging Networking CS 3470, Section 1 Refresher We can use switching technologies to interconnect links to form a large network What is a hub? What is a switch? What is

More information

Internetworking Concepts Overview. 2000, Cisco Systems, Inc. 2-1

Internetworking Concepts Overview. 2000, Cisco Systems, Inc. 2-1 Internetworking Concepts Overview 2000, Cisco Systems, Inc. 2-1 2000, Cisco Systems, Inc. www.cisco.com ICND v1.0a 2-2 Objectives On completion of this chapter, you will be able to perform the following

More information

The MAC Address Format

The MAC Address Format Directing data is what addressing is all about. At the Data Link layer, this is done by pointing PDUs to the destination MAC address for delivery of a frame within a LAN. The MAC address is the number

More information

A. ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa Barbara, UCLA, and U of Utah).

A. ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa Barbara, UCLA, and U of Utah). Volume: 245 Questions Question No: 1 Which of the following statements best describes ARPANET? A. ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa Barbara,

More information

Wired internetworking devices. Unit objectives Differentiate between basic internetworking devices Identify specialized internetworking devices

Wired internetworking devices. Unit objectives Differentiate between basic internetworking devices Identify specialized internetworking devices Wired internetworking devices Unit objectives Differentiate between basic internetworking devices Identify specialized internetworking devices Topic A Topic A: Basic internetworking devices Topic B: Specialized

More information

Computer Science Department 2 nd semester- Lecture13

Computer Science Department 2 nd semester- Lecture13 Network Devices: The network devices (connecting devices) are divided into five different categories based on the layer in which they operate in a network. NIC (Network Interface Card) is used to enable

More information

This tutorial will help you in understanding IPv4 and its associated terminologies along with appropriate references and examples.

This tutorial will help you in understanding IPv4 and its associated terminologies along with appropriate references and examples. About the Tutorial Internet Protocol version 4 (IPv4) is the fourth version in the development of the Internet Protocol (IP) and the first version of the protocol to be widely deployed. IPv4 is described

More information

RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY

RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING QUESTION BANK SUBJECT NAME: COMPUTER NETWORKS SUBJECT CODE: CST52 UNIT-I 2 MARKS 1. What is Network? 2.

More information

Guide to Networking Essentials, 6 th Edition. Chapter 6: Network Reference Models and Standards

Guide to Networking Essentials, 6 th Edition. Chapter 6: Network Reference Models and Standards Guide to Networking Essentials, 6 th Edition Chapter 6: Network Reference Models and Standards Objectives Explain the OSI reference model layers and their relationship to hardware and software Explain

More information

CN [Network Devices]

CN [Network Devices] Q`.1 Explain Repeater. A repeater is a device that operates only at the PHYSICAL layer. A repeater can be used to increase the length of the network by put the effect on the signal. It connects two segments

More information

Chapter 2. Communicating Over The Network. CCNA1-1 Chapter 2

Chapter 2. Communicating Over The Network. CCNA1-1 Chapter 2 Chapter 2 Communicating Over The Network CCNA1-1 Chapter 2 Communicating Over the Network The Platform for Communications CCNA1-2 Chapter 2 Elements of Communication People communicate in many different

More information

Top-Down Network Design

Top-Down Network Design Top-Down Network Design Chapter Five Designing a Network Topology Original slides copyright by Cisco Press & Priscilla Oppenheimer Network Topology Design Issues Hierarchy Redundancy Modularity Well-defined

More information

VLANs. LAN Switching and Wireless Chapter 3. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1

VLANs. LAN Switching and Wireless Chapter 3. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1 VLANs LAN Switching and Wireless Chapter 3 Version 4.0 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives Explain the role of VLANs in a converged network. Explain the role of trunking

More information

Chapter 2 Communicating Over the Network

Chapter 2 Communicating Over the Network Chapter 2 Communicating Over the Network Elements of Communication Communicating the Messages Continuous stream of bits 00101010100101010101010101010101010 I have to wait Single communications (e.g. video,

More information

Network Security Fundamentals. Network Security Fundamentals. Roadmap. Security Training Course. Module 2 Network Fundamentals

Network Security Fundamentals. Network Security Fundamentals. Roadmap. Security Training Course. Module 2 Network Fundamentals Network Security Fundamentals Security Training Course Dr. Charles J. Antonelli The University of Michigan 2013 Network Security Fundamentals Module 2 Network Fundamentals Roadmap Network Fundamentals

More information

Data Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model)

Data Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model) Data Communication Introduction of Communication The need to communicate is part of man s inherent being. Since the beginning of time the human race has communicated using different techniques and methods.

More information

CSE 123A Computer Networks

CSE 123A Computer Networks CSE 123A Computer Networks Winter 2005 Lecture 6: Data-Link III: Hubs, Bridges and Switches Some portions courtesy Srini Seshan or David Wetherall Last Time How do multiple hosts share a single channel?

More information

Component 4: Introduction to Information and Computer Science

Component 4: Introduction to Information and Computer Science Component 4: Introduction to Information and Computer Science Unit 7: Networks & Networking (Part 5 of 5) Unit Objectives Understand the history of networks and their evolution. List and describe the various

More information

Computer Networks Principles LAN - Ethernet

Computer Networks Principles LAN - Ethernet Computer Networks Principles LAN - Ethernet Prof. Andrzej Duda duda@imag.fr http://duda.imag.fr 1 Interconnection structure - layer 3 interconnection layer 3 router subnetwork 1 interconnection layer 2

More information

OSI Layers (Open System Interconnection)

OSI Layers (Open System Interconnection) OSI Layers (Open System Interconnection) What is a Network? A network refers to two or more connected computers that can share resources such as data, a printer, an Internet connection, applications, or

More information

Networking interview questions

Networking interview questions Networking interview questions What is LAN? LAN is a computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected

More information

CHAPTER 2 - NETWORK DEVICES

CHAPTER 2 - NETWORK DEVICES CHAPTER 2 - NETWORK DEVICES TRUE/FALSE 1. Repeaters can reformat, resize, or otherwise manipulate the data packet. F PTS: 1 REF: 30 2. Because active hubs have multiple inbound and outbound connections,

More information

Some portions courtesy Srini Seshan or David Wetherall

Some portions courtesy Srini Seshan or David Wetherall CSE 123 Computer Networks Fall 2009 Lecture 6: Data-Link III: Hubs, Bridges and Switches Some portions courtesy Srini Seshan or David Wetherall Misc Homework solutions have been posted I ll post a sample

More information

Layering in Networked computing. OSI Model TCP/IP Model Protocols at each layer

Layering in Networked computing. OSI Model TCP/IP Model Protocols at each layer Layering in Networked computing OSI Model TCP/IP Model Protocols at each layer Learning outcomes Understand the need of layering in Networked computing Understand the OSI model and the tcp/ip model Understand

More information

Switching on our smartphone and sending an to a friend living 5000 km from our home is something that we take for granted, but that involves a

Switching on our smartphone and sending an  to a friend living 5000 km from our home is something that we take for granted, but that involves a Switching on our smartphone and sending an email to a friend living 5000 km from our home is something that we take for granted, but that involves a lot of very complex processes and has to take into account

More information

CMPE 150 Winter 2009

CMPE 150 Winter 2009 CMPE 150 Winter 2009 Lecture 9 February 3, 2009 P.E. Mantey CMPE 150 -- Introduction to Computer Networks Instructor: Patrick Mantey mantey@soe.ucsc.edu http://www.soe.ucsc.edu/~mantey/ / t / Office: Engr.

More information

Introduction to LAN Protocols

Introduction to LAN Protocols CHAPTER 2 Introduction to LAN Protocols This chapter introduces the various media-access methods, transmission methods, topologies, and devices used in a local area network (LAN). Topics addressed focus

More information

Hands-On Network Security: Practical Tools & Methods

Hands-On Network Security: Practical Tools & Methods Hands-On Network Security: Practical Tools & Methods Security Training Course Dr. Charles J. Antonelli The University of Michigan 2012 Hands-On Network Security Module 2 Network Fundamentals Roadmap Network

More information

Lecture Outline. Lecture 2. OSI model and networking. The OSI model and networking. The OSI model and networking. The OSI model and networking

Lecture Outline. Lecture 2. OSI model and networking. The OSI model and networking. The OSI model and networking. The OSI model and networking Lecture 2 The OSI model Chapter 2, specifically pages 42-58 Dave Novak School of Business Administration, University of Vermont Sources: 1) Network+ Guide to Networks, Dean 2013 2) Comer, Computer Networks

More information

Revision of Previous Lectures

Revision of Previous Lectures Lecture 15 Overview Last Lecture Local area networking This Lecture Wide area networking 1 Source: chapters 8.1-8.3, 17.1, 18.1, 18.2 Next Lecture Wide area networking 2 Source: Chapter 20 COSC244 Lecture

More information

Computer Networks Security: intro. CS Computer Systems Security

Computer Networks Security: intro. CS Computer Systems Security Computer Networks Security: intro CS 166 - Computer Systems Security A very easy network 3/14/16 Computer Networks: Intro 2 Two philosophers example Translator Language Translator Engineer Communication

More information

Internetwork Basic. Possible causes of LAN traffic congestion are

Internetwork Basic. Possible causes of LAN traffic congestion are Internetworking 1 C H A P T E R 2 Internetworking Basics Internetworking Model The OSI Reference Model Ethernet Networking Wireless Networking Data Encapsulation Topic 3 1 Internetwork Basic 4 Possible

More information

The OSI Model. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO).

The OSI Model. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO). Network Models The OSI Model Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO). Model for understanding and developing computer-to-computer communication

More information

Chapter 2. Communicating Over The Network

Chapter 2. Communicating Over The Network Chapter 2 Communicating Over The Network CCNA1-1 Chapter 2 Note for Instructors These presentations are the result of a collaboration among the instructors at St. Clair College in Windsor, Ontario. Thanks

More information

Introduction to OSPF

Introduction to OSPF Campus Networking Introduction to OSPF Workshop Campus Layer-2 Networking Network Workshop Design These materials are licensed under the Creative Commons Attribution-Noncommercial 3.0 Unported license

More information

Chapter 11 in Stallings 10 th Edition

Chapter 11 in Stallings 10 th Edition Local Area Network Overview Chapter 11 in Stallings 10 th Edition CS420/520 Axel Krings Page 1 LAN Applications (1) Personal computer LANs Low cost Limited data rate Back end networks Interconnecting large

More information

Cisco EXAM CCNA Cisco Certified Network Associate. Buy Full Product.

Cisco EXAM CCNA Cisco Certified Network Associate. Buy Full Product. Cisco EXAM - 200-120 CCNA Cisco Certified Network Associate Buy Full Product http://www.examskey.com/200-120.html Examskey Cisco 200-120 exam demo product is here for you to test the quality of the product.

More information

Internetwork Expert s CCNP Bootcamp. Hierarchical Campus Network Design Overview

Internetwork Expert s CCNP Bootcamp. Hierarchical Campus Network Design Overview Internetwork Expert s CCNP Bootcamp Hierarchical Campus Network Design Overview http:// Hierarchical Campus Network Design Overview Per Cisco, a three layer hierarchical model to design a modular topology

More information

Chapter 15 Local Area Network Overview

Chapter 15 Local Area Network Overview Chapter 15 Local Area Network Overview LAN Topologies Bus and Tree Bus: stations attach through tap to bus full duplex allows transmission and reception transmission propagates throughout medium heard

More information

ITEC 3210 M - Applied Data Communications and Networks. Professor: Younes Benslimane, Ph.D.

ITEC 3210 M - Applied Data Communications and Networks. Professor: Younes Benslimane, Ph.D. ITEC 3210 M - Applied Data Communications and Networks Professor: Younes Benslimane, Ph.D. Midterm Exam February 11 th 2013 Instructions Duration: 1 hour 20 minutes Answer all questions No documentation

More information

LAN Interconnection. different interconnecting devices, many approaches Vasile Dadarlat- Local Area Computer Networks

LAN Interconnection. different interconnecting devices, many approaches Vasile Dadarlat- Local Area Computer Networks LAN Interconnection different interconnecting devices, many approaches 1 Need for ability to expand beyond single LAN; appears concept of Extended LAN, extending the number of attached stations and maximum

More information

Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on

Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on CBCN4103 Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on the correct path across the complete network

More information

EIGRP Features and Operation

EIGRP Features and Operation EIGRP Features and Operation Enhanced IGRP (EIGRP) is a classless, enhanced distance-vector protocol. EIGRP is a Cisco proprietary protocol. EIGRP includes the subnet mask in its route updates. And as

More information

Introduction to Computer Networks INTRODUCTION TO COMPUTER NETWORKS

Introduction to Computer Networks INTRODUCTION TO COMPUTER NETWORKS INTRODUCTION TO COMPUTER NETWORKS Computer Networks Computer network connects two or more autonomous computers. The computers can be geographically located anywhere. LAN, MAN & WAN Network in small geographical

More information

Link download full: Test Bank for Business Data Networks and Security 9th Edition by Panko https://digitalcontentmarket.org/download/business-data-networks-and-security-9thedition-by-panko/ Business Data

More information

Gigabit Networks, VLANs & Wireless LANs

Gigabit Networks, VLANs & Wireless LANs Hands-On Gigabit Networks, VLANs & Wireless LANs ( Advanced Local Area Networks ) Course Description This Hands-On course will discuss traditional Ethernet as it is evolving today and its future. Ethernet

More information

Upon completion of this chapter, you will be able to perform the following tasks: Identify what a VLAN is and how it operates. Configure a VLAN to

Upon completion of this chapter, you will be able to perform the following tasks: Identify what a VLAN is and how it operates. Configure a VLAN to Upon completion of this chapter, you will be able to perform the following tasks: Identify what a VLAN is and how it operates. Configure a VLAN to improve network performance. Identify what role the switch

More information

Imi :... Data:... Nazwisko:... Stron:...

Imi :... Data:... Nazwisko:... Stron:... Imi :.................................................... Data:....................... Nazwisko:............................................... Stron:...................... 1. Which of the following protocols

More information

A primer on modern LANs

A primer on modern LANs Advanced Networks http://disi.unitn.it/locigno/index.php/teaching-duties/ A primer on modern LANs Renato Lo Cigno Copyright Quest opera è prote1a dalla licenza: Crea&ve Commons A-ribuzione- Non commerciale-

More information

Computer Networking. December 2004 CEN CN

Computer Networking. December 2004 CEN CN Computer Networking CEN CN 1 Layer 2 - Bridge Frame Header Data Bridge Trailer Data Link Layer Physical Layer More complex than repeat, it requires hardware and software Bridges have diminished because

More information

CS 3201 Computer Networks 2014/2015 Handout: Lab 3

CS 3201 Computer Networks 2014/2015 Handout: Lab 3 Lab Content: - Network Devices - Ethernet Network - MAC Address Network Devices: - Hubs, MAU s, and Repeaters Hubs Hubs are one of the most important components of a network because they act as a central

More information

UNIT III NETWORK LAYER 1. What are the network support layers and the user support layers? Network support layers: The network support layers are Physical layer, Data link layer and Network layer. These

More information

Navpreet Singh INTRODUCTION TO COMPUTER NETWORKS. Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA

Navpreet Singh INTRODUCTION TO COMPUTER NETWORKS. Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA INTRODUCTION TO COMPUTER NETWORKS Navpreet Singh Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA (Ph : 2597371, Email : navi@iitk.ac.in) About Myself About Myself I am Network Manager

More information

Top-Down Network Design

Top-Down Network Design Top-Down Network Design Chapter Seven Selecting Switching and Routing Protocols Original slides by Cisco Press & Priscilla Oppenheimer Selection Criteria for Switching and Routing Protocols Network traffic

More information

Network+ Guide to Networks, 6 th Edition. Chapter 2 Solutions

Network+ Guide to Networks, 6 th Edition. Chapter 2 Solutions Network+ Guide to Networks, 6 th Edition Solutions 2 1 Network+ Guide to Networks, 6 th Edition Chapter 2 Solutions Review Questions 1. Your supervisor has asked you to correct several cable management

More information

Chapter 6 Connecting Device

Chapter 6 Connecting Device Computer Networks Al-Mustansiryah University Elec. Eng. Department College of Engineering Fourth Year Class Chapter 6 Connecting Device 6.1 Functions of network devices Separating (connecting) networks

More information

CompTIA Network+ Study Guide Table of Contents

CompTIA Network+ Study Guide Table of Contents CompTIA Network+ Study Guide Table of Contents Course Introduction Table of Contents Getting Started About This Course About CompTIA Certifications Module 1 / Local Area Networks Module 1 / Unit 1 Topologies

More information

CCM 4300 Lecture 5 Computer Networks, Wireless and Mobile Communications. Dr Shahedur Rahman. Room: T115

CCM 4300 Lecture 5 Computer Networks, Wireless and Mobile Communications. Dr Shahedur Rahman. Room: T115 CCM 4300 Lecture 5 Computer Networks, Wireless and Mobile Communications Dr Shahedur Rahman s.rahman@mdx.ac.uk Room: T115 1 Recap of Last Session Described the physical layer Analogue and Digital signal

More information

IT114 NETWORK+ Learning Unit 1 Objectives: 1, 2 Time In-Class Time Out-Of-Class Hours 2-3. Lectures: Course Introduction and Overview

IT114 NETWORK+ Learning Unit 1 Objectives: 1, 2 Time In-Class Time Out-Of-Class Hours 2-3. Lectures: Course Introduction and Overview IT114 NETWORK+ Course Objectives Upon successful completion of this course, the student will be able to: 1. Identify the devices and elements of computer networks; 2. Diagram network models using the appropriate

More information

We are going to see a basic definition of the devices you can find in a corporate wired network, so you can understand basic IT engineering jargon.

We are going to see a basic definition of the devices you can find in a corporate wired network, so you can understand basic IT engineering jargon. Computer network devices, also known as communication devices, are the backbone of a data communication network. In this category we can find routers, switches, hubs, LAN cards, gateways, modems, hardware

More information

Request for Comments: S. Gabe Nortel (Northern Telecom) Ltd. May Nortel s Virtual Network Switching (VNS) Overview

Request for Comments: S. Gabe Nortel (Northern Telecom) Ltd. May Nortel s Virtual Network Switching (VNS) Overview Network Working Group Request for Comments: 2340 Category: Informational B. Jamoussi D. Jamieson D. Williston S. Gabe Nortel (Northern Telecom) Ltd. May 1998 Status of this Memo Nortel s Virtual Network

More information

Goal and Outline. Computer Networking. What Do We Need? Today s Story Lecture 3: Packet Switched Networks Peter Steenkiste

Goal and Outline. Computer Networking. What Do We Need? Today s Story Lecture 3: Packet Switched Networks Peter Steenkiste Goal and Outline 15-441 15-641 Computer Networking Lecture 3: Packet Switched Networks Peter Steenkiste Fall 2016 www.cs.cmu.edu/~prs/15 441 F16 Goal: gain a basic understanding of how you can build a

More information

Configuring VLANs. Understanding VLANs CHAPTER

Configuring VLANs. Understanding VLANs CHAPTER CHAPTER 11 This chapter describes how to configure normal-range VLANs (VLAN IDs 1 to 1005) and extended-range VLANs (VLAN IDs 1006 to 4094) on the Cisco ME 3400 Ethernet Access switch. It includes information

More information

Catalyst 1900 Series and Catalyst 2820 Series Enterprise Edition Software Configuration Guide

Catalyst 1900 Series and Catalyst 2820 Series Enterprise Edition Software Configuration Guide INDEX A allowed list, VLAN 2-28 to 2-29 ATM 2-5 firmware upgrade B-5 to B-7 LANE trunk connections 1-4 module 2-9, 2-13, 2-23 networks 2-5 trunk 2-4, 2-14 B bridge groups 3-15 bridge number 2-10 Bridge

More information

CCNA Guide to Cisco Networking, Third Edition

CCNA Guide to Cisco Networking, Third Edition Review Questions 1. Which of the following best describes the Presentation layer? b. Translates, encrypts, or prepares data from the Application layer for network transmission c. Handles routing information

More information

Exam Questions Demo Cisco. Exam Questions

Exam Questions Demo   Cisco. Exam Questions Cisco Exam Questions 640-911 DCICN Introducing Cisco Data Center Networking Version:Demo 1. What does RIPv1 send to its neighbors? A. Information about changed routes B. Information about new routes C.

More information

CS 4453 Computer Networks Winter

CS 4453 Computer Networks Winter CS 4453 Computer Networks Chapter 2 OSI Network Model 2015 Winter OSI model defines 7 layers Figure 1: OSI model Computer Networks R. Wei 2 The seven layers are as follows: Application Presentation Session

More information

Routing Between VLANs Overview

Routing Between VLANs Overview Routing Between VLANs Overview This chapter provides an overview of VLANs. It describes the encapsulation protocols used for routing between VLANs and provides some basic information about designing VLANs.

More information

Campus Network Best Practices: Core and Edge Networks

Campus Network Best Practices: Core and Edge Networks Campus Network Best Practices: Core and Edge Networks This document is a result of work by the Network Startup Resource Center (NSRC at http://www.nsrc.org). This document may be freely copied, modified,

More information

Transparent Bridging and VLAN

Transparent Bridging and VLAN Transparent Bridging and VLAN Plug and Play Networking (C) Herbert Haas 2005/03/11 Algorhyme I think that I shall never see a graph more lovely than a tree a graph whose crucial property is loop-free connectivity.

More information

LAN Overview (part 2) Interconnecting LANs - Hubs

LAN Overview (part 2) Interconnecting LANs - Hubs LAN Overview (part 2) CSE 3213 Fall 2011 1 November 2011 Interconnecting LANs - Hubs active central element of star layout each station connected to hub by two UTP lines hub acts as a repeater limited

More information

OSI Model. Teran Subasinghe MBCS, Bsc.(Hons) in Computer Science - University of Greenwich, UK

OSI Model. Teran Subasinghe MBCS, Bsc.(Hons) in Computer Science - University of Greenwich, UK OSI Model Teran Subasinghe MBCS, Bsc.(Hons) in Computer Science - University of Greenwich, UK What is OSI Model? Open Systems Interconnection Reference Model Developed in 1984 by the International Standards

More information

Review. Error Detection: CRC Multiple access protocols. LAN addresses and ARP Ethernet. Slotted ALOHA CSMA/CD

Review. Error Detection: CRC Multiple access protocols. LAN addresses and ARP Ethernet. Slotted ALOHA CSMA/CD Review Error Detection: CRC Multiple access protocols Slotted ALOHA CSMA/CD LAN addresses and ARP Ethernet Some slides are in courtesy of J. Kurose and K. Ross Overview Ethernet Hubs, bridges, and switches

More information

VLAN Configuration. Understanding VLANs CHAPTER

VLAN Configuration. Understanding VLANs CHAPTER CHAPTER 11 This chapter describes how to configure normal-range VLANs (VLAN IDs 1 to 1005) and extended-range VLANs (VLAN IDs 1006 to 4094) on the CGR 2010 ESM. It includes information about VLAN membership

More information

Running Head: NETWORKING 1

Running Head: NETWORKING 1 Running Head: NETWORKING 1 Switches and Bridges - Comparison and Contrast [Name of the Writer] [Name of the Institution] NETWORKING 2 Switches and Bridges Introduction This paper presents a comparison

More information

Full file at

Full file at Guide to Networking Essentials, Sixth Edition 2-1 Chapter 2 Network Hardware Essentials At a Glance Instructor s Manual Table of Contents Overview Objectives Tips Quick Quizzes Class Discussion Topics

More information

Layer 2 functionality bridging and switching

Layer 2 functionality bridging and switching Layer 2 functionality bridging and switching BSAD 141 Dave Novak Sources: Network+ Guide to Networks, Dean 2013 Overview Layer 2 functionality Error detection Bridges Broadcast and collision domains How

More information

Lecture (02) Network Protocols and Standards

Lecture (02) Network Protocols and Standards Lecture (02) Network Protocols and Standards Dr. Ahmed M. ElShafee 1 Agenda - - 2 Preface Protocols and standards are what make networks work together. Protocols make it possible for the various components

More information

Objectives. Network Structure. Network Structure

Objectives. Network Structure. Network Structure 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Objectives Communicating over the Network Network Fundamentals Chapter 2 Chapter 1 1 Describe the structure of a network, including the devices

More information

Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and

Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and Networking Technologies Mean? p. 3 What Is a Computer Network?

More information

OSI Layer OSI Name Units Implementation Description 7 Application Data PCs Network services such as file, print,

OSI Layer OSI Name Units Implementation Description 7 Application Data PCs Network services such as file, print, ANNEX B - Communications Protocol Overheads The OSI Model is a conceptual model that standardizes the functions of a telecommunication or computing system without regard of their underlying internal structure

More information

Network Model: Each layer has a specific function.

Network Model: Each layer has a specific function. OBJECTIVES: To discuss the OSI model and its layer architecture and to show the interface between the layers. To briefly discuss the functions of each layer in the OSI model. To introduce the TCP/IP protocol.

More information

Fundamentals of Networking Introduction to Networking Devices

Fundamentals of Networking Introduction to Networking Devices Fundamentals of Networking Introduction to Networking Devices Kuldeep Sonar 1 NIC (Network Interface Card) A network interface provides connectivity from an end-user PC or laptop to the public network.

More information

POS Example Exam. 1) 6b I-SUB-06-EX-0

POS Example Exam. 1) 6b I-SUB-06-EX-0 POS Example Exam Name:... Login:... Maximum number of points for the exam is 55, minimum number of points you need to get to pass the exam is 30. If you get between 25 and 30 points, the decision about

More information

SYSTEMS ADMINISTRATION USING CISCO (315)

SYSTEMS ADMINISTRATION USING CISCO (315) Page 1 of 11 Contestant Number: Time: Rank: SYSTEMS ADMINISTRATION USING CISCO (315) REGIONAL 2016 Multiple Choice: Multiple Choice (50 @ 10 points each) TOTAL POINTS (500 points) (500 points) Failure

More information

Configuring VLANs CHAPTER

Configuring VLANs CHAPTER CHAPTER 8 This chapter describes how to configure your access point to operate with the VLANs set up on your wired LAN. These sections describe how to configure your access point to support VLANs: Understanding

More information

Campus Networking Workshop. Layer 2 engineering Spanning Tree and VLANs

Campus Networking Workshop. Layer 2 engineering Spanning Tree and VLANs Campus Networking Workshop Layer 2 engineering Spanning Tree and VLANs Switching Loop When there is more than one path between two switches What are the potential problems? Switching Loop If there is more

More information

exam. Number: Passing Score: 800 Time Limit: 120 min CISCO Interconnecting Cisco Networking Devices Part 1 (ICND)

exam. Number: Passing Score: 800 Time Limit: 120 min CISCO Interconnecting Cisco Networking Devices Part 1 (ICND) 100-105.exam Number: 100-105 Passing Score: 800 Time Limit: 120 min CISCO 100-105 Interconnecting Cisco Networking Devices Part 1 (ICND) Exam A QUESTION 1 Which route source code represents the routing

More information

Computer Networks. Week 04 Media and Devices. College of Information Science and Engineering Ritsumeikan University

Computer Networks. Week 04 Media and Devices. College of Information Science and Engineering Ritsumeikan University Computer Networks Week 04 Media and Devices College of Information Science and Engineering Ritsumeikan University Network Media and Devices l When you build a network, the network hardware may be used

More information