Experimental Net Lesson1

1、Experimental NetworkingLesson 1Important word Ipconfig ping IP address WAN Gateway MAC addressSummary of lectures Network contain computers, sensors, servers, switch and routersDesign of these experimental Lesson 1 (45 min) I will start by introducing the theory/tool/way of doing something Then we d

2、o “it” slowly together Lesson 2 (45 min) You try and use what you have learned in the pervious lesson either I have some questions or you try to use the tool by yourselves The problem Network often have a tendency to fail, or remember a wrong IP address To troubleshoot a network connection IT people

3、 needed a tool that could tell them if a computer is reachable or if your computer can talk to a known active connectionSolution IPCONFIG Ping and Windows Network Connection detailsWindows Network connectivity In the bottom of your screen you will see a small Network symbol double click If not go to

4、: Start Programs Network and choose the Show all connections then double click on the LAN-connection Now choose Details and you will see information about the connectivity Who can tell me what I am seeing?Windows Network connectivity Open the LAN connectivity again and choose Properties We will get

5、information about how the computer gets and IP address There is two ways in which a computer get and IP Automatic then it will ask a DHCP server to give it and IP Static we type in the information ourselves, we bypass the DHCP server and we will always know that this computer is in this room Changin

6、g from static to DHCP you might lose the ip numbers, so write them down before doing else SO write down the numbers on a paper, just in case because I DO NOT know these numbersIpconfig This command gives you information about you network Connectivity the same as Windows Connectivity as seen before H

7、owever, here you have the option of releasing an IP or renewing an IP Since the computers at campus are static we will not be able to use this it requires that our IP is dynamic or given by the DHCP serverIpconfig “ipconfig /all” will give you all the information it knows about the network card and

8、connectivity Our computer contains the following important elements MAC physical address of our network card IP given to ID it on the network Gateway to get access to WANPing To see if a computer has an active connection we can use ping Ping works by sending out a small packet, which purpose is to s

9、ee if it get a reply packet back again Here we need to use CMD to get access Windows key + R This will give you a Run in windows In the field type CMD You will now see a black screen with white textPing Again ping works by sending out a packet, and it wait for reply in a certain amount of time if re

10、ply it show us the information So if we write: “ping ” you will see the following We can also try and ping a local computer Who can give me their IP address: Then we write: “ping 10.10.10.10” Can also be used to get statistical analysis of the data travelling “ping t”Your turn1. Try and go into CMD and run:“ipconfig -?“Read th