Campus LAN and Internet2 Performance

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Campus LAN and Internet2 Performance

• Fred Zalupski
• Engineering Operations Coordinator, MAGPI

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Topics

• Last mile? No, last 100 yards!
• LANs and the Human Body
• How we abuse our LANs
• Moments of Truth
• A free tool
• The Performance Chain

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A LAN is a Human Body
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Likely Abuses
Maybe we should re-think this design!

• Hubs
• Unauthorized devices
• Software security
• Viral activity
• Chatty protocols
• Jabbering NIC
• FDX/HDX mismatch on auto negotiation
• Cable certification

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True or False

• I know the current topology of my network.
• I know every protocol in use on my network today.
• I can determine the source of all traffic on my
  network.
• My network is secure.
• I have the statistics I need to effectively
  manage my network.
• I know the health of network devices, including
  clients.
• My copper and fiber infrastructure performs to
  specification.

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Internet2 Detective

• Free application
• http//detective.internet2.edu/
• Three tests
• Abilene access
• Bandwidth
• 384 kbps
• to 15 mbps
• Multicasts

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Moving the Bottleneck

• Not the WAN anymore!
• Why dont my Britney Spears videos download any
  faster?
• LAN Performance
• Host Performance
• TCP Performance and the land speed record

You are the weakest link. Goodbye!
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Thank you!