Transcript NPToolkit – A Knoppix Live-CD

Network Performance Toolkit
(NPToolkit)
A Knoppix Live-CD
Rich Carlson
Tools Tutorial
12/4/06
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
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NPToolkit
• A specialized Knoppix Live-CD to
support the Internet2 E2e Tools
• Web100 enhanced Linux 2.6.17.7 kernel
• Includes all Internet2 E2E tools
• Includes PSC’s NPAD tool
• All server processes start automatically at
boot time, using generic configuration files
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NPToolkit Knoppix Disk
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Obtaining the CD
• Download it from the Internet2 E2E web
page
• Ask us for a pre-burned CD
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The Download Process
• Start at the main E2E toolkit web page
• http://e2epi.internet2.edu/network-performance-toolkit.html
• Download the NPToolkit ISO image from the
Internet2 web site
• http://e2epi.internet2.edu/network-performancetoolkit/network-performance-toolkit.iso
• Optionally download the CD Label
• http://e2epi.internet2.edu/network-performancetoolkit/network-performance-toolkit-cd-label.bmp
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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
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System Startup
• Insert the CD into the system tray
• Insert the USB thumb drive into an open
port
• Power on the system
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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
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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
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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
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Static or DHCP addressing
• Controls how IP address is configured
• Prompts for
• IP address
• Netmask
• Interface ID
• Gateway
• Automatically saves/restores information
during reboots
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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
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NDT Customization
• Allows setting of admin email address
• Specifies NDT server location
• Specifies NDT network connection
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NPAD Customization
• Allows admin to set email address
• Specifies server location
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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
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NPToolkit Operation
• After system customization is completed,
login prompt appears
• Login with userid knoppix
• No password
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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
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Future Directions
• Continue to update Customization scripts
• Upgrade tools
• Upgrade Linux Kernel
• Develop new class, focusing on how to
understand the tool results
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• Questions???
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