1. 2005 Spring CS492 Lab #2 2005.10.06. Thu 8pm-10pm Building E3-1, Classroom #3 Kim, Dong-Wook Lee, Dooyoung Kim, Taehee Sue Moon Dept of EECS, Div. of CS

2. 2 Goals and Overview of Lab #2 Goals –To measure and compare TCP/UDP thruput of iPAQ –To experience performance degradation of real-time applications over wireless Overview –Run iper on iPAQ using different channels –Run StarCraft over wireless and experience QoS

3. 3 Step 1: Preparation Install iper software on your PDA –Download iper from FTP server(“143.248.134.182”) on your laptop –Transfer iper program to your PDA using the connector –Install iper on your PDA (iPAQ)

4. 4 Outline of iper IP traffic generation and measurement software on PDA –http://www.isimus.com/IPerhttp://www.isimus.com/IPer Ex) TCP/UDP connection between server and client

5. 5 Step 1: Setting

6. 6 Step 1: TCP Thruput Measurement TCP thruput measurement under different AP Channels –TCP throughput measurement Team #1: Run “iperf –c 192.168.11.x –n” Team #1 and #2 Team #1 to #5 All teams Repeat channel numbers 1, 3, 6, 11 At the end, upload your log at “192.168.11.x” –Ex) tcp_ 실험번호 _ 채널 번호 _ 조별.txt

7. 7 Step 2: UDP Thruput Measurement UDP thruput measurement under different AP Channels –UDP throughput measurement Team #1: Run “iperf –c 192.168.11.x –u –p” Team #1 and #2 Team #1 to #5 All teams Repeat channel numbers 1, 3, 6, 11 At the end, upload your log at “192.168.11.x” –Ex) udp_ 실험번호 _ 채널 번호 _ 조별.txt

8. 8 Step 3: Preparation Install Ethereal software on your Laptop –Download Ethereal from FTP server(“143.248.134.182”) Install a demo version of StarCraft on your laptop –Download StarCraft from our FTP server

9. 9 Step 3: Setting team#6 #7 #8 #4 #3 #9 #1 #2 #5 SNU2Access point DHCP server access point (IPv4_KAIST or IPv6_KAIST) #channel:1 access point (IPv4_KAIST or IPv6_KAIST) #channel:6 802.11g network (54Mbps) #channel:1

10. 10 Step 3: StarCraft Performance Game traffic measurement on different channels –Run Ethereal program to collect packets –Run StarCraft program using IPX protocol –Play game * Repeat above using channels, 1, 3, and 5 At the end, upload your log at “192.168.11.x” –Ex) starcraft_ 채널 번호 _ 조별.txt

11. 11 Lab #2: Wrap Up Questions to ask yourself –What was your PDA’s thruput under 802.11b wireless network? –What was your laptop’s thruput under different channel? –Was there any difference under different channel? If any, why? –Did you feel performance degradation while playing StarCraft? If so, why?