Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 1

Computer Networks 2 - Labs

Contents Lab 1: Introduction to networking materials and software tools

Lab 2: Practice on Cisco network devices

Lab 3: Building a complete network on Packet Tracer

Lab 4: LAN-to-LAN Connections

Lab 5: Advanced LAN Switching Configuration - VLANs

Lab 6: Building Inter-VLAN Network with a Router and Layer-3 Switch

Lab 7: Basic Router Configuration

Lab 8: RIP Version 2 and Debugging

Lab 9: Configure OSPF on a multi-access network

Lab 10: BGP - inter-autonomous system routing protocol

Lab 11: Wireless Network and AP Configuration

Lab 12: Using a network management and monitoring tool

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 2

Total Lab Number: 10 Labs Về cách đánh giá sinh viên:

• Hai phần chiếm 20 % điểm tổng kết

• Điểm tham gia Lab (5 điểm) và báo cáo (5 điểm): 10 điểm/lab, 10% điểm tổng kết

• 1 bài tập lớn hay mini project: 10 điểm, 10% điểm tổng kết

• Thi giữa kỳ: 30% điểm tổng kết

• Thi cuối kỳ: 50% điểm tổng kết

Một số lưu ý:

• Các bài thực hành và bài giảng được upload lên Sakai, yêu cầu sinh viên download xuống trong buổi thực hành (để thông tin thay đổi vào giờ chót sẽ được sinh viên biết đến).

• Chấm điểm cho báo cáo theo nhóm 4 người, có thể thay đổi điểm cho mỗi cá nhân trong trường hợp đặt biệt. Thời gian deadline cho mỗi báo cáo là 1 tuần. Báo cáo trể hạn xem như 0 điểm.

• Một số bài được làm trên máy tính và một số được làm trên thiết bị được ghi chú trong Objectives.

• Mini project sẽ được báo cáo theo nhóm vào 2 buổi thực hành cuối cùng.

• Sinh viên phải reset tất cả các thiết bị về trạng thái factory default sau buổi thực hành.

• Sinh viên phải xếp gọn gàng dụng cụ, máy tính và xếp ghế vào giữa Phòng trước khi rời khỏi PTN.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 3

Lab 1: Introduction to networking material and software tools

I. Objectives: • Identify materials in networking toolbox

• List some network software tools

• Using a powerful network simulation - Packet Tracer

II. Master Computer Networking Tool Kit (1)Multi network cable tester with remote (1)"Super crimp" Ergonomic crimp frame with RJ45 die set installed (1)RG58, RG% (/62, BNC/TNC Die Set) (1)2-Stage impact punch down tool with 66 and 110 blades (1)Rotary coaxial cable stripper (1)Cable cutter-up to 0.40" diameter (1)Precision wire stripper-AWG30,28,26,24,22 and 20 (1)Inspection mirror (1)7pc Folding hex key set (1) Mini flashlight (1)"Super torque" ratcheted screwdriver handle with the following blades:7" extension, 3/32", 5/32", 3/16", 7/32", 1/4" nutdrivers, Phillips #0, #1, #2, Slotted 1/8", 3/16", 1/4", Star Tips T-06, T-07, T-08, T-09, T10 and T15 (1) Zippered carrying bag

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 4

III. Network Management Tools and Utilities

1. TCP/IP Tools • arp - Used to manipulate the arp cache.

• ipconfig - Displays the configuration settings for the host.

• nbtstat - Used to troubleshoot NetBIOS name resolution problems.

• netstat - Current connections, routing tables, interface statistics, netlink messages, multicast memberships, and masquerade connections are displayed,...

• nslookup - Name server lookup for DNS.

• ping - Used to verify that another host may be reached with an ICMP packet.

• route - View or modify the local route table.

• snmp - Remote management of network devices.

• tracert/traceroute - Traceroute traces a route through routers from one IP address to another.

2. Network Tools for Workstations 3D Traceroute/mtr: As its name describes, 3D Traceroute provides some great visual traceroute graphs. Unlike its name, 3D Traceroute also includes many other tools, such as a whois query, ping monitors, and my favorite, a day and night trace. Platform: Windows

PuTTY PuTTY is a free implementation of Telnet and SSH for Win32 and Unix platforms, along with an xterm terminal emulator. Platforms: Windows, Linux

PACManager PAC is a Perl/GTK Gnome replacement for SecureCRT/Putty/etc... It provides a GUI to configure SSH/Telnet connections: users, passwords, EXPECT regular expressions, macros, etc. Platforms: Linux

TightVNC/vncviewer TightVNC is a free remote control software package derived from the popular VNC software. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer. Platforms: Windows, Linux

WinSCP/scp WinSCP is an open source SFTP client for Windows. Its main function is the secure file transfer between a local and a remote computer. Beyond this, WinSCP offers basic file manager functionality. It uses Secure Shell (SSH) and supports, in addition to Secure FTP, legacy SCP protocol.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 5

Nmap As its name implies, nmap is a network mapping utility. Provide nmap with a TCP/IP address, and it will identify any open "doors" or ports that might be available on that remote TCP/IP device. Platforms: Linux

Wireshark Wireshark (formerly Ethereal) is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education. It has all of the standard features you would expect in a protocol analyzer, and several features not seen in any other product. Platforms: Windows, Linux, Unix

Nemesis Nemesis is a command-line network packet crafting and injection utility for UNIX-like and Windows systems. Nemesis, is well suited for testing Network Intrusion Detection Systems, firewalls, IP stacks and a variety of other tasks. As a command-line driven utility, Nemesis is perfect for automation and scripting. Nemesis can natively craft and inject ARP, DNS, ETHERNET, ICMP, IGMP, IP, OSPF, RIP, TCP and UDP packets. Using the IP and the Ethernet injection modes, almost any custom packet can be crafted and injected. Platforms: Windows, Linux

Firewall Builder Firewall Builder is multi-platform firewall configuration and management tool. It consists of a GUI and set of policy compilers for various firewall platforms. Firewall Builder supports iptables, ipfilter, OpenBSD PF and Cisco PIX. Platforms: Linux, Unix

3. Enterprise Network Monitoring Tools and Utilities Big Brother Big Brother monitors System and Network-delivered services for availability. Your current network status is displayed on a color-coded web page in near-real time. When problems are detected, you're immediately notified by e-mail, pager, or text messaging. Platforms: Windows, Linux, Unix

Cacti Cacti is a complete frontend to RRDTool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Platforms: Windows, Linux, Unix

Multi Router Traffic Grapher (MRTG) If you manage a network, you should be using this tool. MRTG is much more than a router tool, it can also monitor switches, servers, applications, and more!. Platforms: Windows, Linux, Unix

Ntop ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. Ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well. Platforms: Windows, Linux, Unix

SmokePing SmokePing provides detailed graphs of latency information. SmokePing includes built-in probes for ICMP, Cisco devices, Telnet, LDAP, Radius, SSH, and many other protocols. Platforms: Linux, Unix

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 6

System and Network Integrated Polling Software (SNIPS) SNIPS (System & Network Integrated Polling Software) is a system and network monitoring software that runs on Unix systems and can monitor network and system devices. It is capable of monitoring DNS, NTP, TCP or web ports, host performance, syslogs, radius servers, BGP peers, etc. New monitors can be added easily (via a C or Perl API). Platforms: Linux, Unix

ZABBIX ZABBIX is a graphical monitoring tool that provides visual feedback of performance and availability problems. ZABBIX provides service information, application monitoring, server monitoring, and network monitoring. Platforms: Linux, Unix

Snort Snort is free, open source, and one of the best network intrusion detection systems (NIDS) available. Snort has a large user community and is backed by a commercial company, Sourcefire. Platforms: Windows, Linux

ZenOss Zenoss is today's premier open source IT management solution. Through integrated monitoring, it enables you to manage the status and health of your infrastructure through a single, Web-based console. The power of Zenoss starts with its in-depth Inventory and Configuration Management Database (CMDB). Zenoss creates this database by discovering managed resources —servers, networks, and other devices—in your IT environment. The resulting environment model provides a complete inventory of your key systems, down to the level of resource components (interfaces, services, and processes, and installed software). Platforms: Windows, Linux, Unix

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 7

IV. Cisco Packet Tracer Cisco® Packet Tracer is a powerful network simulation program that:

• allows students to experiment with network behavior and ask “what if” questions.

• help students understand the complexities of information and communication technologies (ICT).

• gain practical networking technology skills. As a new curricula and educational tools, Packet Tracer provides simulation, visualization, authoring, assessment, and collaboration capabilities to facilitate the teaching and learning of complex technology concepts.

1. Key Features

Packet Tracer Workspaces: Cisco Packet Tracer has two workspaces: logical and physical. The logical workspace allows users to build logical network topologies by placing, connecting, and clustering virtual network devices. The physical workspace provides a graphical physical dimension of the logical network, giving a sense of scale and placement in how network devices such as routers, switches, and hosts would look in a real environment. The physical view also provides geographic representations of networks, including multiple cities, buildings, and wiring closets.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 8

Figure 3. The physical workspace provides a graphical view of the logical network

Packet Tracer Modes: Cisco Packet Tracer provides two operating modes to visualize the behavior of a network—real-time mode and simulation mode. In real-time mode the network behaves as real devices do, with immediate real-time response for all network activities. The real-time mode gives students a viable alternative to real equipment and allows them to gain configuration practice before working with real equipment.

In simulation mode the user can see and control time intervals, the inner workings of data transfer, and the propagation of data across a network. This helps students understand the fundamental concepts behind network operations. A solid understanding of network fundamentals can help accelerate learning about related concepts.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 9

Protocols:

Modular Devices: Graphical representations visually simulate hardware and offer the ability to insert interface cards into modular routers and switches, which then become part of the simulation.

Multiuser Functionality: Cisco Packet Tracer is a network-capable application, with a multiuser peer-to-peer mode that allows collaborative construction of virtual networks over a real network. The multiuser feature enables exciting collaborative and competitive interactions, providing the option to progress from individual to social learning and features opportunities for collaboration, competition, remote instructor student interactions, social networking, and gaming.

Tutorials: Packet Tracer includes several basic step-by-step tutorials that familiarize users with the product features and explain how to engage in simulations. Additional advanced tutorials are available for download from Academy Connection.

Help: A help feature is available to familiarize users with the Cisco Packet Tracer interface, functions, and features. The help area includes important notes and tips and provides annotated screenshots to aid understanding.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 10

Activity Wizard: The Activity Wizard allows users to author their own learning activities by setting up scenarios using instructional text, and creating initial and final network topologies and predefined packets. The Activity Wizard also includes grading and feedback capabilities.

Figure 4. The Activity Wizard enables the creation of customized learning activities

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 11

V. Lab Practice • Reading Cisco Packet Tracer tutorials

• Building 2 LANs of the Illustrated Network (IN) as following

1. Network Layout

2. Lab Steps • Need 2 Cisco Switch 2960 (each Switch at 1 LAN, named SwLAN1 and SwLAN2) and 8

hosts.

• Configure devices creating a basic LAN.

• Configure the hosts with the indicated parameters.

Faculty of Computer Science and Engineering – Ho Chi Minh City University of Technology

Computer Networks 2 – Laboratories 12

• Connect the devices and hosts.

• Verify connectivity with ping command on each LAN.

• Save work to file, naming: YourStudentCode_CN2Lab1.pkt

• Send this file by email to Lab Instructor.