CALEDONIAN COLLEGE OF ENGINEERING, Lab Manual SULTANATE OF OMAN. Beng Hons CoE. Module Code. Computer Networks Lab Semester A M2I124962

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1 Beng Hons CoE Module Code M2I Computer Networks Lab CALEDONIAN COLLEGE OF ENGINEERING, SULTANATE OF OMAN Lab Manual Semester A Module Leader: Ms. Amal Al- Balushi Lab instructor: Nasreya Al-Hinai Department of Electrical and Computer Engineering

2 LABORATORY / WORKSHOP RISK ASSESSMENT Risk assessment in Student Project work and during a practical session is a compulsory requirement. It involves a careful examination of possible events that may adversely affect the intended outcome of the project or may cause harm to people or damages to properties. Appropriate precautions should be taken well in advance to minimise the likelihood of such adverse events and to ensure the satisfactory achievement of the expected result from the project/ practical work. All students doing experiments in laboratory/workshop must fill this form and attach with the lab report. Student ID, Name& Department Name of the Laboratory/workshop RISK ASSESSMENT Possible Hazard Possibility (Yes/No) Is risk assessment done? (Yes/No) Precautions taken to eliminate or minimize risk and remarks Chemical hazard Health hazard Machinery/mechanical hazard Fire hazard Electrical hazard Burning injury/cut injury Slip, trip and fall hazard Environmental hazard Any Other Risks List of experiments Signature of Student: Date: Signature of Laboratory instructor/ Module leader: Date:

3 SAFETY MEASURES IN LABS/ WORKSHOPS - UNDERTAKING BY STUDENTS (To be signed by all students at the beginning of laboratory /workshop sessions) Department Laboratory/Workshop Semester/ Year I hereby declare that: 1. I have been given safety induction and familiarized with safety procedures related to this laboratory/workshop. 2. I have understood and I am conscious of my responsibility for my own safety while using the various tools, equipment and machineries. 3. I am clearly aware of the severity of consequences and implications including the possibility of accidents and personal injuries, if I do not follow safety procedures. 4. I will act and behave responsibly to prevent accidents. I further agree and undertake that: 1. I will never work in the lab/workshop without the supervision of my instructor. 2. I will follow the safety procedures that have been instructed to me in the safety induction and mentioned in the standard operating procedure. 3. I will wear appropriate and necessary Personal Protective Equipment (PPE) while working in the lab/workshop. 4. I will not endanger or compromise the safety of others. 5. I will act and behave in a responsible manner at all times and follow all instructions given by the lab / workshop instructor. 6. If any accidents and unsafe condition or activity is observed by me, I will immediately report the same to the instructor. 7. In case of any emergency, I will follow the safety guidelines as identified in the HSE posters. 8. I will follow good housekeeping and keep my workbench /station clean before leaving the workshop. Sl No Student name Student Number Signature

4 TABLE OF CONTENTS SL NO TITLE PAGE NO 1. Module Details 6 2. Introduction 6 3. Aims and Objectives 6 4. Syllabus 6 5. Learning Outcomes 7 6. Learning and Teaching Strategy 7 7. Indicative Reading 7 8. Assessment strategy 8 9. Lab report evaluation criteria Laboratory safety procedures 9

5 PART B-LABORATORY EXPERIMENTS EXPT. NO TITLE PAGE NO 1. Creating a Local Area Network & sharing of information and resources Installing Windows 2008 Server and Virtual machine Installing and configuring Active Directory + GPOs Configuring Dynamic Host Configuration Protocol Multiple Network Design & configuration in Cisco Environment Create Wireless LAN 37

6 1. Module Details Programme Name Module Code Module Title Credits Semester Co-Requisite Knowledge Pre Requisite Knowledge BSc Honours in Computer Engineering & Telecommunication M2I Computer Networks Lab 10 Level 2 Semester A 1. Introduction The aim of this module is to create an understand computer networks concepts which will allow students to grasp a full practical knowledge that is based on industrial practice. The practical experience should enable the students to understand and practically implement the latest technologies on the following area 1. Cabling systems in network environment 2. Create a small and medium sized network 3. Create and configure server systems by using (Active Directory, DHCP and other network administrative issues). 4. Create an environment of Cloud computing by using virtualization concepts. 5. Design and configure multiple networks by using Cisco routers. 2. Aims And Objectives To understand different requirement of Network and create Local Area Network and Wide Area Network that will enable sharing of information and resources. To understand latest hardware requirements used to make a network. To design and configure Local Area Network of a small business enterprise. To design and configure Wide Area Network for medium size enterprise To understand and make network cabling used in network computing. To discuss different network protocols used in Local Area Network and Wide Area Network. To Install and configure server based system that will enable joining of clients and sharing resources. 3. Syllabus The laboratory syllabus will cover the following areas: 1. Lab 1: Creating Local Area Network and sharing of information and resources 2. Lab 2. Understanding Virtualization and Installing of VMware Virtual machines 3. Lab 3. Installing and configuring Active Directory 4. Lab 4: Configuring Active Directory, Joining the clients and add users, group and Group policies on a server based system. Configuring DHCP Server and clients 5. Lab 5: Configure Multiple Network (WAN) in Cisco environment 6. Lab 6: Configure wireless LAN

7 4. Learning Outcomes On completion of this module the student should be able to: 1. Familiarise with the network devices and physical media such as cables, modular connectors, router and switches, hubs and repeaters. (AM1, AM4) 2. Select appropriate networking devices for a range of requirements. (AM1, AM4) 3. Implement small office/home networks.(am1, AM4) 4. Configure routers in small WANs (AM1, AM4) 5. Demonstrate working of simple client server applications through Socket API (AM1, AM4) 6. Compare the performance of computer networks through simulation (AM1, AM4) 5. Learning And Teaching Strategy The main teaching method will be based on lectures and Laboratory exercises. A student will be able to understand all practical concepts of Computers networks. A practical Lab setup will be included whereby students will be able to set their own servers and use virtualizations to link between different servers and clients. Simulation software such as Packet tracer will be used to introduce the basic configuration of Cisco routers. 6. Indicative reading List of textbooks/video/references: R1 R2 Dye, Mark, McDonald, Rick Rufi, Antoon, 2007, Networking Fundamentals, CCNA Exploration Companion Guide.. 1st Edition ISBN Andrew S Tenenbaum, 2006 Computer Networks 4 th edition PHI E1 V1 Introduction to Virtualization, 2011, Morty EisenMarcum Technology April 28th, available from [Accessed on 1 st July, 2015] Directed Video material made by Ali Al-Mahruqi in Caledonian college of Engineering (Oman) Active Directory, Organization Units, DHCP servers (to be downloaded from Black Board)

8 7. Lab Report Evaluation Criteria Each lab experiment will be evaluated based on the lab report submitted by the student and the evaluation criteria are as follows: Sl.No Assessment Criteria Understanding on aims & objectives and theory operation related to the experiment performed. Understanding the full concept of the equipment used, designing and implementation Viva Report writing skills (i.e. proper use of English language, correct fonts and screen shots of the results 5 References & Conclusion 8. Guidelines and Instructions: i. Students should submit the lab report (typed on A4 size paper) ii. Each lab report should contain Introduction, Aim, objectives and conclusion iii. Students should submit the consolidated lab report (properly bound) after completing all the experiments. Plagiarism It is important to understand what plagiarism is and how it can be avoided. Unacknowledged copying from published sources (including the internet) or incomplete referencing The following also constitute plagiarism: Copying sections of work from a friend/colleague. Having a friend/family member dictate something to you. Copying and pasting from the internet without citing the source. Copying directly from a study text quotation without citing the source.

9 Quotations When using quotations from books, websites or journal articles you should cite the author and the year of publication then use the quote in quotation marks. Paraphrasing Paraphrasing is where you encapsulate another person s original idea, argument or conclusion in your own words. It is still necessary to attribute those ideas to the author, and you can do this by using the formatting outlined above for direct quotations, taking care to include the author s surname and the year of publication. Collaboration We acknowledge that you may undertake joint study with colleagues or as part of a formal training programme. However, working with another person to write assignments is not acceptable. Your answers must be your own and in your own words. 9. Laboratory Safety Procedures Safety First Before attempting to do any activity in the lab, you should be able to know the safety procedures in the computer labs. Your lab instructor will read all safety and procedures during the first teaching week. A copy of lab safety and procedure will be provided to you for your own safety. Please make sure you have understood all lab procedure and follow them accordingly in order to prevent any hazards.

10 EXPERIMENT 1 Creating a local Area Network and sharing of information and Resources Aim: To make a local Area Network of a medium sized Company. Objectives: To learn different classes of IP addresses. To differentiate between IP address and MAC Address. To create a small network of between 3-5 host To make use of hardware such switches, cables (UTP) To add and share Printers and folders on the network To remotely connect from one computer to another computer Overview: Local Area Network is a type of network that connects computers together within the same area. Local Area Network performance works at its best if the distance is at the range of 100 meters. It can either work with or without internet connection. The most important is to be able to connect between computers so that they can be able to share resources on the network. Components needed when connecting Local Area Network: 1. UTP (Unshielded Twisted Pair) Cat5 or Cat6 cables to connect from switch to the computer 2. Switches to join to the computers 3. Routers to link from one network to another 4. IP address to identify each host on the network 5. NIC (Network Interface Card) to be installed in every computer in order to allow connectivity from a computer to a switch. 6. Wireless Card, to be used instead of NIC ( Network Interface Card) in a wireless environment) Scenario Copyright Materials Got from:

11 Step 1: Steps to make Local Area Network: 1. Take a switch and adapter; make sure they are plugged into electricity. Make sure the power in on. 2. Prepare the cable (cat 5 or cat 6 UTP) 3. Plug one end of the cable from the computer (NIC) and the other End to the switch port. 4. Switch on all the computers. 5. Make sure all the cables are correctly connected on the switch. (Note the yellow light from switch; make sure the connected computers are displaying light on the switch). 6. Put IP Addresses depending on the number of computers your network is having. (For IP Addresses, follow the below steps Go to start- Settings-Control Panel Network Connection 2) Double Click On control panel the Network and internet Connection as shown in below pictures

12 3) View network status Change adapter setting

13 4) Right click on local area connection. 5) Click On Properties. 6) Unchecked IPV6 option (because in this lab only we will use IPV4). 7) Select IP version 4 (TCP/IP). 8) Click On Properties. 9) Use the following IP address. 10) Assign as shown below Type in the IP Address as follows 11) Ok

14 12) From start Click run cmd Type ipconfig to check windows IP configuration computer as above. 13) Type ipconfig/all to check the IP address and the details of the computer. 14) To check if the computers are connected on the network, type ping followed by IP address you want to check. Example ping if the computer is successful connected, it should show TTL = 128 and packets sent should be 4, packet received should be 4 and loss should be 0%. If the computer is not successfully connected, the message will appear as Request Timeout, Packet sent = 4, received = 0 and loss is 100%. Note: If there computer is not successfully connected, you may check the following reasons 1) The cables may not be working 2) Wrong configuration of IP address 3) The computer is on the separate network 4) Switch port may have a problem. 5) Network Interface card may have a problem. 6) Firewall may prevent pinging to take place etc.

15 Step 2 : Steps to add Printer on Windows 7 1. From the Start menu in Windows, select [Devices and Printers]. The Devices and Printers window opens. Click [Add a printer]. (2) Click [Add a local printer].

16 (3) Select [Use an existing port], then select [LPT1: (Printer Port)] from the pull-down menu, then click [Next]. (4) Click [Next] Steps to Sharing Printer 1. Click on Start in the bottom left corner of your screen. A popup list will appear. 2. Click on Devices and Printers, from the popup list. 3. Right click the printer you want to share. A dropdown list will appear. 4. Select Printer properties from the dropdown list. 5. Click on the Sharing tab 6. Select the Share this printer check box Access shared printer from other computer in the network 1. Click on run type the remote computer that has the share printer Ok

17 2. Right click on the printer connect Step 3: Steps of Remote desktop connection. Open the Control Panel: Start Control Panel. Computer Networks Lab Rev: 00 Semester A P17 P a g e

18 2. Click System and Security. 3. Click Allow Remote Access. Computer Networks Lab Rev: 00 Semester A P18 P a g e

19 4. under the Remote Tab: Select "Allow Remote Assistance connections to this computer". Select "Allow connections only from computers running Remote Desktop with Network Level Authentication (more secure)". 5. Click Select Users. Click Add. Computer Networks Lab Rev: 00 Semester A P19 P a g e

20 Enter your PAWS ID and click OK when finished. 6. Under the Computer Name Tab: Make a note of the [Full Computer Name]. Computer Networks Lab Rev: 00 Semester A P20 P a g e

21 Step 2 -- Remotely Connect to another Computer 1. Click Start and search for Remote Desktop Connection. 2. Enter the Full Computer Name/ IP address you noted in and click Connect. You may need to enter a username and password depending on the access credentials that are required my other user or the other computer. The user name and password should be for the remote access computer (the computer that you Computer Networks Lab Rev: 00 Semester A P21 P a g e

22 want to access to) via the network). 3. To Disconnect: Click Start Log Off. This will log you out of the remote computer. Note: If you have problems connecting to the remote computer, double-check the full computer name. If this is correct, you might need to change your firewall connection. To do this, open the Control Panel and select Windows Firewall. Make sure that under General, the box that reads "Don't allow exceptions" is not checked, and that under Exceptions, Remote Desktop is selected. Configure the Firewall Settings If the Firewall is enabled, it needs to have Remote Desktop Exception Enabled. 1. Click Start Control Panel. 2. Click on System and Security. Computer Networks Lab Rev: 00 Semester A P22 P a g e

23 3. Click on Windows Firewall. 4. Click Allow a program or feature through Windows Firewall. 5. Scroll through the list of programs and features until you find Remote Desktop. CHECK the box marked Remote Desktop and both boxes to the left field. Computer Networks Lab Rev: 00 Semester A P23 P a g e

24 6. Click OK. Result: Conclusion: Computer Networks Lab Rev: 00 Semester A P24 P a g e

25 EXPERIMENT 2 Installing Windows 2008 Server and Virtual machine Aim: To install Virtual Machine and Windows 2008 Server 32 bit Enterprise Edition Objectives: To learn different Edition of Windows 2008 server To understand different types of Virtual machines such as Virtual PC and VMware. To install Virtual Machine and Windows 2008 server To setup system requirements for Windows 2008 server from Virtual Machine. Overview Virtual machine is the system software that enables computer users to create extra machines that will act virtually from the physical machine. Virtual machine can enable organizations to save a lot of money in hardware. They do not need to buy extra hardware for their server or client environment. By using Virtual Machines such VMware users will be able to create more computers on a single physical machine. In this Experiment, students should be able to install VMware as their virtual machine on their system. After VMware installation, two Windows XP OS will be installed on the VMware as the client computers. Finally Windows 2008 server 32-bit edition will be installed on VMware. System Requirement Core i3 or Above CPU machine RAM of 4 GB or above 60 GB of Hard Disk VM virtual Box Procedures to Install VMware Player Make sure the physical machine is installed with an Operating system. In this experiment, you install windows XP. Then install VMware player. Procedure before installing Windows XP on VMware player 1. Go to settings of VMware 2. Change the Memory (RAM) to at least 512 MB 3. Allocate a Hard Disk space of at least 10 GB 4. Set USB detection to Automatic 5. Leave other settings as default. After set up, install Windows XP or 7 on the Oracle VM virtual Box. Procedure before installing Windows 2008 Server on VM virtual Box. 6. Go to settings of VM virtual Box. 7. Change the Memory (RAM) to at least 1.5 GB 8. Allocate a Hard Disk space of at least 40 GB 9. Set USB detection to Automatic 10. Leave other settings as default. After set up, install Windows Server 2008 on the VM virtual Box. Computer Networks Lab Rev: 00 Semester A P25 P a g e

26 EXPERIMENT-3 Installing and configuring Active Directory +GPOs Aim: To create and configure Active Directory in windows 2008 server Objectives: To setup initial configuration such as IP, DNS address on the server side environment To promote active directory database on the windows 2008 server To configure DNS zones such Forward and reverse lookup zones. To Troubleshoot DNS problems To promote a second domain server for replication To add clients on windows 2008 server To create a single user and multiple users by using command line To create Organization Units and configure group policies Overview Active Directory is the database. And in order for the application to be stored in the database. The AD database has to define what record is found within that application. By using Active Directory we can be able to have a server environment and control all the resources on the network centrally. In this experiment, students will be able to perform practical configuration of windows 2008 server Active Directory. Step by step configuration of will be done to make sure active directory will be installed successfully. Troubleshooting will be done to make sure DNS is working without any problem. Different clients will be added to the server and assigns different controls by using group policies. System Requirements 1. Core i3 or Above CPU machine and RAM of 4 GB or above GB of Hard Disk 3. VM virtual Box 4. Windows 2008 server Operating system (Trial Version) Procedures before configuring 2008 server Active Directory 1. Make sure you install VMware to a physical machine. 2. Ensure Windows 2008 server DVD is inserted in the DVD-ROM. 3. Make sure Server IP address in inserted to the TCP/IP Properties (example ) 4. Make Sure DNS IP address is correctly inserted (example ) since we are in Local Area Network, it is preferred to use same IP address. 5. Make sure the server name is easy to be understood 6. Make sure Windows update are done before configuring Active Directory 7. Make sure Server roles such as Active Directory Domain and Service and DNS server is installed. Procedures to configure 2008 server Active Directory 1. Use Command DCPROMO to promote active directory on windows 2008 server 2. Use palace.com as your domain name 3. Follow steps by steps until the configuration is finished Computer Networks Lab Rev: 00 Semester A P26 P a g e

27 4. Configure the reverse lookup zones to point to forward lookup zones 5. Taste The DNS to make sure it is working without any problem. Joining Client to the server and Create Organization Units 1. Join at least one client (XP or Windows 7 to the server) 2. Create two users on the users folder found server manager. 3. Create 3 organizations units ( Caledonian, SQU and Sohar) 4. Create a child organization unit in Caledonian OU as Com & internet. 5. Create 20 users in the Com & internet organization Unit by using command line. 6. In the Com & internet OU, you should put at least 3 group policies to control the users when accessing the clients. 7. Make sure at least 2 users in the Com & internet OU are tested in the client side. All 3 group policies should work according to your configuration. Creating a second server for replication 1. Promote a second server to be a part of second domain ( palace.com) 2. Make sure DNS is working properly by testing the connectivity 3. Test the replication between the first server and the second server. All the organization units and users created from the first server should be replicated to the second server. Result: Conclusion: Computer Networks Lab Rev: 00 Semester A P27 P a g e

28 EXPERIMENT -4 Configuring Dynamic Host Configuration Protocol Aim: To configure DHCP server on Windows 2008 server Active directory Objectives: To install DHCP server on windows 2008 server Active Directory. To create a scope that will allocate IP addresses automatically. To configure DHCP server options such DNS. To test the dynamic allocation of IP addresses from the server to the client. Overview DHCP (Dynamic Host Configuration Protocol) is a service that allows server to distribute IP addresses to the clients automatically. DHCP server can make it easy for organizations to set up different scopes and distribute IP addresses of different networks. So in general, DHCP function is to automatically allocate IP addresses and other TCP/IP-related information such as Windows Internet Naming Service (WINS) IP addresses, Domain Name System (DNS) IP addresses, default gateway IP addresses, and subnet mask information to DHCP-enabled clients. System Requirements 1. Core i3 or Above CPU machine and RAM of 4 GB or above GB of Hard Disk 3. VM virtual Box 4. Windows 2008 server Operating system (Trial Version) 5. DHCP server service Procedures before configuring DHCP server on windows 2008 server Active Directory 6. Make sure Active directory is installed and working 7. Ensure DNS address is correct and test if it is working Procedures to configure DHCP server on windows 2008 server Active Directory Result: 8. Make sure 2008 server DVD is inserted in DVD-ROM drive 9. Ensure DHCP server is installed from server Add Roles 10. Configure at least 1 scope to the DHCP properties 11. Join The clients to the server 12. Ensure the DHCP clients receive IP address from the server. 13. Make sure the address pool of the server receives the address from the joining clients. Conclusion: Computer Networks Lab Rev: 00 Semester A P28 P a g e

29 EXPERIMENT-5 Multiple Network Design & configuration in Cisco Environment Aim: To design multiple networks and test the traffics of data transmission. Overview This exercise will enable students to design and configure multiple networks in a cisco environment. Different WANs will be designed and data transmission traffic will be tested from source to destination. Lab 6: Cabling a Network and Basic cisco Router Configuration What you learn by completing this Lab: Virtual Cabling devices and establish console connections using Packet tracer emulator. Erase and reload the routers. Perform basic IOS command line interface operations. Perform basic router configuration and assigned IP address for each port in a router. Verify and test configurations using show commands, ping and trace route Cables types: Automaticall y choose connection Type Console Cable Copper Straight through Copper Cross over Fiber Phon e Coaxi al Seria l DCE Serial DTE Topology Addressing Table Computer Networks Lab Rev: 00 Semester A P29 P a g e

30 Device Interface IP Address Subnet mask Default getaway CCE Router Fa0/ N/A S1/ N/A CCE Router 2 Fa0/ N/A S1/ N/A PC 1 N/A PC2 N/A Task 1: Cable the Ethernet Links of the Network. Cable the Ethernet links for a network that is similar to the one in the Topology Diagram. The output used in this lab is from Cisco 2811 routers. But you can use any current router in your lab as long as it has the required interfaces as shown in the topology. A simple way to identify the available interfaces on a router is by entering the show ip interface brief command. As following: Step 1 Connect the R1 Router to the S1 Switch Use a straight-through Ethernet cable to connect the Fast Ethernet 0/0 interface of the R1 router to the Fast Ethernet 0/1 interface on the S1 switch. Step 2: Connect PC1 to the S1 Switch. Use a straight-through Ethernet cable to connect the network interface card (NIC) or Fast Ethernet (as shown in packet tracer) of PC1 to the Fast Ethernet 0/2 Interface of the S1 switch. Step 3: Connect PC2 to the R2 Router. Use a crossover Ethernet cable to connect the Fast Ethernet 0/0 interface of the R2 router to the NIC of PC2. Because there is no switch between PC2 and the R2 router, a crossover cable is required for a direct link between the PC and the router. Task 2: Cable the Serial Link between the R1 and R2 Routers. Computer Networks Lab Rev: 00 Semester A P30 P a g e

31 In a real-world WAN connection, the customer premises equipment (CPE), which is often a router, is the data terminal equipment (DTE). This equipment is connected to the service provider through a data circuit-terminating equipment (DCE) device, which is commonly a modem or channel service unit (CSU)/ data service unit (DSU). This device is used to convert the data from the DTE into a form acceptable to the WAN service provider. How can you upgrade a cisco router if it does not have serial port? Select a router double click on router follow the below steps then close window Step 1: Connect the DCE end of the null serial cable to the Serial 1/0 interface of the R1 router, and the DTE end of the null serial cable to the Serial 1/0 interface of the R2 router. Review the information provided below before making these connections. Before making the connection to one of the routers, examine the connector on the router and the cable. Note that the connectors are tapered to help prevent improper connection. Holding the connector in one hand, orient the cable and router connecters so that the tapers match. Now push the cable connector partially into the router connector. It probably will not go in all the way because the threaded connectors need to be tightened in order for the cable to be inserted completely. While holding the cable in one hand and gently pushing the cable toward the router, turn one of the thumb screws clockwise, 3 or 4 rounds, to start the screws. Now turn the other thumbscrew clockwise, 3 or 4 rounds, to get it started. At this point the cable should be attached sufficiently to free both hands to advance each thumbscrew at the same rate until the cable is fully inserted. Do not over-tighten these connectors. Task 3: Erase and Reload the Routers. Computer Networks Lab Rev: 00 Semester A P31 P a g e

32 Step 1: Using the HyperTerminal session, double click and on the router then select CLI as mention in the below figure to enter privileged EXEC mode on R1. How to get IOS Command Line Interface 1. Open pack tracer application 2. Select type of routers as given the experiment 3. Double click on the Router Click on CLI Router> Router>enable Router#erase startup-config Erasing the nvram filesystem will remove all configuration files! Continue? [confirm] [OK] Erase of nvram: complete %SYS-7-NV_BLOCK_INIT: Initialized the geometry of nvram Router# Step 2: Reload the configuration. When the prompt returns, issue the reload command. Confirm the objective when prompted. After the router finishes the boot process, choose not to use the Auto Install facility, as shown: [ Would you like to enter the initial configuration dialog? [yes/no]: no Would you like to terminate autoinstall? [yes]: Press Enter to accept default. Press RETURN to get started! ] Computer Networks Lab Rev: 00 Semester A P32 P a g e

33 Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)# Step 3: Return to privileged EXEC mode with the exit command. Router(config)#exit %SYS-5-CONFIG_I: Configured from console by console Router# Step 4: Examine the commands that are available for privileged EXEC mode. A question mark,?, can be entered at the prompt to display a list of available commands. Router#? Exec commands: <1-99> Session number to resume clear Reset functions clock Manage the system clock configure Enter configuration mode connect Open a terminal connection copy Copy from one file to another debug Debugging functions (see also 'undebug') delete Delete a file dir List files on a filesystem disable Turn off privileged commands disconnect Disconnect an existing network connection enable Turn on privileged commands erase Erase a filesystem exit Exit from the EXEC logout Exit from the EXEC no Disable debugging informations ping Send echo messages reload Halt and perform a cold restart resume Resume an active network connection setup Run the SETUP command facility show Show running system information --More Step 5 :Configure the router name as R1. Enter the command hostname R1 at the prompt. Router#configure terminal Router(config)#hostname CCE CCE(config)# or you can you shortcut Router#conf t Step 6: Disable DNS lookup with the no ip domain-lookup command. CCE(config)#no ip domain-lookup CCE(config)# Step 6: Configure an EXEC mode password. Configure an EXEC mode password using the enable secret password command. Use class for the password. Computer Networks Lab Rev: 00 Semester A P33 P a g e

34 CCE(config)#enable secret class CCE(config)# The enable secret command is used to provide an additional layer of security over the enable password command. The enable secret command provides better security by storing the enable secret password using a non-reversible cryptographic function. The added layer of security encryption provides is useful in environments where the password crosses the network or is stored on a TFTP server. When both the enable password and enable secret passwords are configured, the router expects the password as defined in the enable secret command. In this case, the router ignores the password defined in the enable password command. Step 7: Remove the enable password. Because the enable secret is configured, the enable password is no longer necessary. IOS commands can be removed from the configuration using the no form of the command. CCE(config)#no enable password CCE(config)# Step 8: Configure a message-of-the-day banner using the banner motd command. CCE(config)#banner motd & Enter TEXT message. End with the character '&'. ********************************!!!AUTHORIZED ACCESS ONLY!!! ******************************** & CCE(config)# Step 9: Configure the console password on the router. Use cisco as the password. When you are finished, exit from line configuration mode. CCE(config)#line console 0 CCE(config-line)#password cisco CCE(config-line)#login CCE(config-line)#exit CCE(config)# Step 10 : Configure the password for the virtual terminal lines. Use cisco as the password. When you are finished, exit from line configuration mode. CCE(config)#line vty 0 4 CCE(config-line)#password cisco CCE(config-line)#login CCE(config-line)#exit CCE(config)# Step 11: Configure the FastEthernet 0/0 interface with the IP address /24. CCE(config)#interface fastethernet 0/0 CCE(config-if)#ip address CCE(config-if)#no shutdown %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up CCE(config-if)# Computer Networks Lab Rev: 00 Semester A P34 P a g e

35 Step 13: Configure the Serial1/0 interface with the IP address /24. Set the clock rate to Note: Because the routers in the labs will not be connected to a live leased line, one of the routers will need to provide the clocking for the circuit. This is normally provided to each of the routers by the service provider. To provide this clocking signal in the lab, one of the routers will need to act as the DCE on the connection. This function is achieved by applying the clock rate command on the serial 1/0 interface, where the DCE end of the null modem cable has been connected. CCE(config-if)#interface serial 1/0 CCE(config-if)#ip address CCE(config-if)#clock rate CCE(config-if)#no shutdown CCE(config-if)# Step 14: Use the end command to return to privileged EXEC mode. CCE(config-if)#end Step 15: Save the R1 configuration. Save the R1 configuration using the copy running-config startup-config command. CCE#copy running-config startup-config Building configuration... [OK] Step 16: For Router 2, repeat Steps 5 and named as CCE2. Step 2: Configure the Serial 1/0 interface with the IP address /24. CCE2(config)#interface serial 1/0 CCE2(config-if)#ip address CCE2(config-if)#no shutdown Step 17: Configure the FastEthernet 0/0 interface with the IP address /24. CCE2(config-if)#interface fastethernet 0/0 CCE2(config-if)#ip address CCE2(config-if)#no shutdown %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up CCE2(config-if)# Step 18: Use the end command to return to privileged EXEC mode. CCE2(config-if)#end CCE2# Step 19: Save the R2 configuration. Save the R2 configuration using the copy running-config startup-config command, CCE2#copy running-config startup-config Building configuration... [OK] CCE2# Task 4: Configure IP Addressing on the Host PCs. Step 1: Configure the host PC1. Configure the host PC1 that is attached to R1 with an IP address of /24 and a default gateway of Computer Networks Lab Rev: 00 Semester A P35 P a g e

36 Step 2: Configure the host PC2. Configure the host PC2 that is attached to R2 with an IP address of /24 and a default gateway of Task 5: Examine Router show Commands. There are many show commands that can be used to examine the operation of the router. In both privileged EXEC and user EXEC modes, the command show? provides a list of available show commands. The list is considerably longer in privileged EXEC mode than it is in user EXEC mode. Step 1: Examine the show running-config command. The show running-config command is used to display the contents of the currently running configuration file. From privileged EXEC mode on the R1 router, examine the output of the showrunning-config command. If the -More-- prompt appears, press the Spacebar to view the remainder of the command output. Task 6 : Examine the show interfaces command. The show interfaces command displays statistics for all interfaces configured on the router. A specificinterface can be added to the end of this command to display the statistics for only that interface. From privileged EXEC mode on the R1 router, examine the output of the show interfaces fastethernet0/0 command. If the -More-- prompt appears, press the Spacebar to view the remainder of the command output. CCE# show interfaces fastethernet 0/0 FastEthernet0/0 is up, line protocol is up (connected) Task 7 : Examine the show ip interface brief command. The show ip interface brief command displays a summary of the usability status information for each interface. From privileged EXEC mode on the R1 router, examine the output of the show ip interface brief command. If the -More-- prompt appears, press the Spacebar to view the remainder of the command output. CCE#show ip interface brief Task 9: Using ping. The ping command is a useful tool for troubleshooting Layers 1 though 3 of the OSI model and diagnosing basic network connectivity. This operation can be performed at either the user or privileged EXEC modes. Using ping sends an Internet Control Message Protocol (ICMP) packet to the specified device and then waits for a reply. Pings can be sent from a router or a host PC. Step 1: Use the ping command to test connectivity between the R1 router and PC1. CCE#ping Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to , timeout is 2 seconds:.!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 72/79/91 ms Task 8: answering the following questions: Why would you want to disable DNS lookup in a lab environment? What would happen if you disabled DNS lookup in a production environment? Why should every router have a message-of-the-day banner? Computer Networks Lab Rev: 00 Semester A P36 P a g e

37 EXPERIMENT-6 Create Wireless LAN Aim: To configure basic wireless LAN in CISCO environment using packet taker emulator. Objectives: To add a wireless router to the network. To configure options and setup options in the Linksys Administration tab. To add wireless connectivity to a PC and test connectivity. Network Diagram: Got from: Computer Networks Lab Rev: 00 Semester A P37 P a g e

38 Task 1: Add a Wireless Router to the Network Step 1. Add a Linksys WRT300N to the network. From the Network Components box in the lower left-hand corner of Packet Tracer, click Wireless Devices and select a Linksys-WRT300N. Add the device between the switch and PC3, as shown in the topology diagram. Step 2. Configure the display name. Click the Linksys router to open the configuration GUI. Select the Config tab and set the Display Name to WRS2. Step 3. Connect the Internet interface to S1. Using a straight-through cable, connect the Internet interface of the Linksys router to the Fa0/7 interface of the switch. 4. Check results. Your completion percentage should be 19%. If not, click Check Results to see which required components are not yet completed. Task 2: Configure Options in the Linksys Setup Tab Step 1. Set the Internet connection type to static IP. Click the Linksys router, and then select the GUI tab. In the Setup screen for the Linksys router, locate the Internet Connection Type option under Internet Setup. Click the drop-down menu and select Static IP from the list. Step 2. Configure the VLAN 88 IP address, subnet mask, and default gateway for WRS2. Set the Internet IP address to Set the subnet mask to Set the default gateway to Note: Typically in a home or small business network, this Internet IP address is assigned by the ISP through DHCP. Step 3. Configure the router IP parameters. In the Setup screen, scroll down to Network Setup. For the Router IP option, set the IP address to and the subnet mask to Under the DHCP Server Setting, make sure that the DHCP server is enabled. Computer Networks Lab Rev: 00 Semester A P38 P a g e

39 Step 4. Save settings. Click the Save Settings button at the bottom of the Setup screen. Note that the IP address range for the DHCP pool adjusts to a range of addresses to match the router IP parameters. These addresses are used for wireless clients. Clients receive an IP address and mask and are given the router IP to use as a gateway. Step 5. Check results. Your completion percentage should be 50%. If not, click Check Results to see which required components are not yet completed. Task 3: Configure Options in the Linksys Wireless Tab Step 1. Set the network name (SSID). Click the Wireless tab. Under Network Name (SSID), rename the network from Default to WRS_LAN. Click Save Settings. Step 2. Set the security mode. Click Wireless Security. It is located next to Basic Wireless Settings in the main Wireless tab. Change Security Mode from Disabled to WEP. Using the default Encryption of 40/64-Bit, set Key1 to Click Save Settings. Step 3. Check results. Your completion percentage should be 69%. If not, click Check Results to see which required components are not yet completed. Task 4: Configure Options in the Linksys Administration Tab Step 1. Set the router password. Click the Administration tab. Under Router Access, change the router password to cisco123. Re-enter the same password to confirm. Step 2. Enable remote management. Under Remote Access, enable remote management. Click Save Settings. Note: PC1 and PC2 can ping WRS2, but will not be able to remotely manage it through the Internet interface. By default, the WRT300N blocks all attempts to access the web interface from the outside world. Currently, Packet Tracer does not support disabling this security feature. You will test remote management once PC3 wireless connectivity is established. Step 3. Check results. Your completion percentage should be 75%. If not, click Check Results to see which required components are not yet completed. Computer Networks Lab Rev: 00 Semester A P39 P a g e

40 Task 5: Add Wireless Connectivity to a PC Step 1. Remove the Fast Ethernet NIC on PC3. Click PC3 and then click the Physical tab. In the Physical Device View is an image of the PC. Click the power button on the PC to turn it off. Remove the Fast Ethernet NIC by dragging it to the bottom right corner of the window. The NIC is located at the bottom of the machine. Step 2. Install the wireless NIC on PC3. Under Modules, find Linksys-WMP300N and drag and drop it where the Fast Ethernet NIC was located. Turn the power back on. Step 3. Configure PC3 with a WEP key. In the configuration GUI for PC3, click the Desktop tab. Click PC Wireless to begin setting up the WEP key for PC3. A Linksys screen is displayed. You should see that the PC has not associated with an access point. Click the Connect tab. The WRS_LAN should appear in the list of available wireless networks. Make sure it is selected and click Connect. Under WEP Key 1, type the WEP, , and click Connect. Go to the Link Information tab. The Signal Strength and Link Quality indicators should show that you have a strong signal. Click the More Information button to see details of the connection. You see the IP address the PC received from the DHCP pool. Close the PC Wireless configuration window. Step 4. Check results. Your completion percentage should be 100%. If not, click Check Results to see which required components are not yet completed. Task 6: Test Connectivity All the PCs should have connectivity with one another. Click Check Results, and then click the Connectivity Tests tab to check. If the completion percentage is at 100% but the connectivity tests are unsuccessful, try turning PC3 off and then on again. Results Conclusion Computer Networks Lab Rev: 00 Semester A P40 P a g e

41 CCE Graduate Attributes Computer Networks Lab Rev: 00 Semester A P41 P a g e

42 CALEDONIAN COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING LABOROTARY LOG SHEET 10 Module name Module Code Computer Networks Lab M2I Student Number Student Name Title of the Experiment Experiment Number Computer Networks Lab Rev: 00 Semester A P42 P a g e

43 CALEDONIAN COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING Computer Networks - Lab Skills Card Student Name : Student Number : Programme : BSTE, BSEE Semester : A Year Level : 2 Sl.No Nature of Skills Assessed Poor Satisfactory Good Excellent Remarks St : Identification of Components of a Network 1 Identification of interconnecting devices and cables generally used in LAN 2 Use of straight, crossover and console cables 3 Identification of different ports in router 4 Identifying the difference between Server and clients Stage 2 Ability to deal with configuration of a router 1 Assignment of an IP address to a port in router 2 Assignment of an IP address to a host in a WAN scenario 3 Listing of networks known by router 4 Enabling the routing protocol) Stage 3 :Identification of the components in the simulation environment 1 Awareness of simulation tool( Name and version) 2 Identify the objects from the Object palette Stage 4 : Ability to deal with the simulation tool 1 Design of LAN/WAN 2 Analysis of network performance 3 View result statistics Instructors Name & Signature Student Signature with date Module Leader Name & Signature Computer Networks Lab Rev: 00 Semester A P43 P a g e