Network Performance Toolkit (NPToolkit) A Knoppix Live-CD Rich Carlson Tools Tutorial 12/4/06

Rich Carlson Internet2 E2E Tools Multiple tools currently being deployed BWCTL – active throughput tests via NLANR’s Iperf NDT – End host diagnostic and analysis OWAMP – One way delay measurement Thrulay – active throughput tests

Rich Carlson Network Performance Workshops Hands-on workshop to deploy E2E tools in campus and GigaPoP networks Currently focused on building and deploying tools Major difficulty is getting prerequisite Web100 enhanced kernel built and deployed

Rich Carlson Knoppix Live-CD A bootable Debian Linux OS Uses RAM disk to hold working image Can access system HW including network, disk drives, and other peripherals Configuration management to save/restore customization information Allows simple start-up for novice user

Rich Carlson NPToolkit A specialized Knoppix Live-CD to support the Internet2 E2e Tools Web100 enhanced Linux kernel Includes all Internet2 E2E tools Includes PSC’s NPAD tool All server processes start automatically at boot time, using generic configuration files

Rich Carlson NPToolkit Knoppix Disk

Rich Carlson Obtaining the CD Download it from the Internet2 E2E web page Ask us for a pre-burned CD

Rich Carlson The Download Process Start at the main E2E toolkit web page Download the NPToolkit ISO image from the Internet2 web site toolkit/network-performance-toolkit.iso toolkit/network-performance-toolkit.iso Optionally download the CD Label toolkit/network-performance-toolkit-cd-label.bmp

Rich Carlson The ISO Burn Process Insert a blank CD into a drive and burn the ISO using your favorite program Identify a drive to hold customization files USB Thumb Drive Internal harddrive

Rich Carlson System Startup Insert the CD into the system tray Insert the USB thumb drive into an open port Power on the system

Rich Carlson First time steps The system will boot and start all 4 tools using generic, but usable, configuration files The last step in the boot process is to prompt the user for customization information Follow the on-screen prompts to create customized configs

Rich Carlson Customization Options Obtain IP address via DHCP or manually configuration Customize NDT and NPAD web pages Set BWCTL and OWAMP limits Setup USB thumb drive

Rich Carlson Setup USB Drive Searches for any USB drives connected to the system Copies /usr/local/etc/knoppix.sh file to USB drive Knoppix searches for and executes this file at boot time File contains instructions to copy files from USB drive to system space before daemons star

Rich Carlson Static or DHCP addressing Controls how IP address is configured Prompts for IP address Netmask Interface ID Gateway Automatically saves/restores information during reboots

Rich Carlson BWCTL Customization Default config Allows 30 sec TCP tests from anyone Denies UDP tests from everyone Customization can Enable access via AES authentication Enable different limits for ‘trusted’ and ‘untrusted’ users

Rich Carlson NDT Customization Allows setting of admin address Specifies NDT server location Specifies NDT network connection

Rich Carlson NPAD Customization Allows admin to set address Specifies server location

Rich Carlson OWAMP Customization Default config Allows up to 1 Mbps of traffic Allows up to 100 MB of disk space Customization can Enable access via AES authentication Enable different limits for ‘trusted’ and ‘untrusted’ users

Rich Carlson NPToolkit Operation After system customization is completed, login prompt appears Login with userid knoppix No password

Rich Carlson Remote Administration Admin should set password for knoppix and root accounts Start ssh daemon /sbin/service ssh Startup process automatically generates new keys Manually save/restore /etc/passwd, /etc/group and /etc/shadow files on thumb drive May automate this process in future customization scripts

Rich Carlson Future Directions Continue to update Customization scripts Upgrade tools Upgrade Linux Kernel Develop new class, focusing on how to understand the tool results

Rich Carlson Questions???