CMIT 265 Name:______________________________ Monitoring network activity on XP with Task Manager Use the 'student' account on lab XPs. What is the speed of your local area connection:________ TASK MANAGER (Ctrl Shift Esc or CtrlAltDel|Task Manager or Start|Run|taskmgr)) (Options | Always On Top can be turned off) Networking tab: View | Update speed | High instead of the sluggish Normal View | Network Adapter History turn on the color coding and to show bytes sent and received instead of just total bytes. View | Select Columns to add these columns: Bytes sent & receive. Unicasts sent/received & Nonunicasts sent/received Show their values: _______ ________ _______ ________ ____ ______ Also add Bytes/interval Maximize the window to see these easily. Look at netstat -e in command prompt. Is this approximataely the same data as Task Manager?:___ Options | Show Cumulative Data turn it on. Now is netstat -e showing the same data?:____ What's still different:_______________ Graph is what scale on vertical axis:_________ Options | Auto Scale turn it off Graph is now what scale on vertical axis:_________ Options | Reset has what effect on the data (find out what effect it has, it does have one :__________________________________________ From Windows Explorer, connect to \\kadenix\public (kadenix is the Linux system at 192.168.0.197) Turn off 'Show Cumulative Data' and 'Reset' the Task Manager Networking data to display 0's. Time the following activity using the room's clock, or something with a second hand: Copy the "100meg.txt" file to your system watching the graph in Task Manager. Before starting the copy, make sure no one else is currently copying it (and using any shared bandwidth, if any, and creating congestion at Kadenix). Watch the Bytes Per Interval. By the clock's second hand, how much time does it take to copy:_______ Fill-in this information: Bytes sent & receive. Unicasts sent/received & Nonunicasts sent/received _______ ________ _______ ________ ____ ______ How much overhead (i.e. extra bytes more than the 102 million of the file) was sent:________ 100meg.txt is reported as 97.4 MB or 99,796 KB (M meaning 2**20 which is 1048576, K meaning 2**10 which is 1024) View its Properties to see how many bytes it is:_______________ and how many bytes it occupies on disk:_________________ (the last sector or block being only partially filled) So roughly what bandwidth were your getting (100MB*8 / time in seconds):____Mbps What percentage of your interface's rated speed is this:_________ Put the 100meg.txt into a folder. Right click the folder and turn on sharing of it. Reset Task Manager Pair with your neighbor, take turns: have your neighbor copy it from you to him (i.e. you are sending), after done: Bytes sent & receive. Unicasts sent/received & Nonunicasts sent/received _______ ________ _______ ________ ____ ______ rename the 100meg.txt to 'yourname.txt' and try to copy it back to \\kadenix\public What happens:_____________________________ ********* SKIP ************************** Add the Bytes received column. Everyone together: time a copy yourname.txt back to \\kclass1\cmit265 What bandwidth are you getting (bytes rcvd/interval):__________ What time difference from when you did it alone:______________ ******** END SKIP *************************** Use your web browser to browse to http://192.168.0.197/cmit265 Reset Task Manager to show all 0s. RightClick the 100meg.txt to Save As ... download it to My Documents. By the clock's second hand, how much time does it take to download:_______ Fill-in this information: Bytes sent & receive. Unicasts sent/received & Nonunicasts sent/received _______ ________ _______ ________ ____ ______ Roughly what bandwidth were your getting (100MB*8 / time in seconds):____Mbps How much overhead (i.e. extra bytes more than the 102 million of the file) was sent:________ Now Leftclick the 100meg.txt link. How does bandwidth compare to the above rightclick Save As?_______________________________________ Why:__________________________________________