Duke

1
Duke NIH VideoconferenceEnd-End

• Mark Johnson
• MCNC (NCREN/NCNI)
• Mj_at_ncren.net

2
Duke-NIH Videoconference

• Credit course taught from Duke Medical School to
  students at NIH
• Litton CAMVision2 MPEG2 CODECs
• 6 Networks
• Duke, NCNI, Abilene, vBNS, NIH, MAX
• 4 Layer 2 protocols
• Ethernet (100BaseT, GigE)
• ATM (RFC1483, LANE)
• SRP Spatial Reuse Protocol
• PoS

3
Troubleshooting

• Simplify wherever possible
• Watch our for Ethernet full-duplex/half duplex
  mismatch

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NIH-Duke Path (Original)
5
Duke Network
6
NIH Network (Original)
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NIH Network (First modification)
8
NIH Network (Today)
9
NIH-Duke Path Today