• A culture of collaboration
  • People culture
  • Research culture
• A body of coordinated research
  • Mbone, integrated services, etc. prototypes
• An "internet you can break"
  • Sun SPARCs, T-1 lines

People Culture

• Small group of researchers (~20)
  • Pre-existing interest in collaboration
  • Probably originated in ARPANET research 1970-75
• Active contributors only
  • Research institute and university originally
  • Some commercial contributors
  • Regular (monthly) meetings
• High-level "administrator/advocate"
  • Respected researcher
  • Active contributor

Research Culture

• Boot-strap research
  • Teleconferencing for meetings
  • Continuous open-mike audio channel
• Common platform
  • "COTS" to raise the research level
  • Freely share code (within limits...)
• Coordinated sharing
  • Time-share a distributed "lab you can break"
  • Maintain evolving base systems (kernel releases)
  • Restore configurations, perform "NOC" functions

Research

• IP multicast <
  • Mbone grew out of Dartnet
• "Integrated services" support
  • Packet scheduling algorithms
  • State setup protocols
  • Real-time (multimedia) applications
• Routing
• Time-keeping

Infrastructure

• T-1 lines, Sun SPARCs as programmable routers

Dartnet-II

• Group of groups of collaborators
  • "loose" participants
  • dynamic configuration of resources
• Add selected areas
  • Mobility / wireless
  • Security
• Heterogeneity
  • Core upgraded Dartnet, inc. higher-speed links
  • Diverse project-specific subnets / overlays

Dartnet-II

• Security:
  • GOAL: Build a "secure" Dartnet
  • PLAN: Network arch. / protocols for usable mechanisms
• Mobility:
  • GOAL: D-II laptops connect within 20 miles of any D-II
  • PLAN: Integrate mobile / wireless fully into the Internet site
    Support multicasting, real-time, etc.

Dartnet Bottom-line

"Standing on each other's shoulders,
NOT on each other's toes!"

(to paraphrase Alan Newell)