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QBone: Building a Testbed for IP Differentiated Services (Update)

Explore the QBone initiative's goal of creating a testbed infrastructure for IP differentiated services, supporting interdomain deployment, IETF standards, and gradual improvements while engaging the R&E community.

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QBone: Building a Testbed for IP Differentiated Services (Update)

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  1. QBone:Building a Testbed for IP Differentiated Services (Update) UCAID Member Meeting 28 April 1999 Washington D.C. Phil Emer<phil@ncstate.net>

  2. Summary • Applications are drivers • Qbone has an initial set of membership for focus • guidelines for expanding the membership while maintaining a hands-on focus • Qbone network service • can’t do overlay (well not really) • edge-to-edge focus (campus service independent) • Credit where it’s due • Ben Teitelbaum, Internet2, Fearless leader • Susan Hares, Merit, Bandwidth Broker (BB) • Matt Zekauskas, I2, Measurements • Rudiger Geib, DT, ALL

  3. Inhibited Apps QoS Prevented Enables Apps QoS Motivate Apps  Networking Circularity • Existing stalemate: • QBone initiative seeks to turn the arrows around and create positive feedback:

  4. The Internet2 QBone Initiative • Build interdomain testbed infrastructure • Experiment and improve understanding • Incrementally improve testbed • Support intradomain & interdomain deployment • Lead and follow IETF standards work • Some parts of DiffServ architecture cooked; others far from it • Our experience will inform standards process • Openness of R&E community gives us an edge • Users will tolerate the flakiness of an experimental infrastructure • Engineers will share experience and measurement data • QBone as “infrastructure that only a graduate student could love”

  5. QBone Architecture (10km view) • Subset of IETF DiffServ Architecture • Jacobson's VLL "Premium" Service • Zero drops • Very low jitter • SLA “musts” • EF PHB supported at every hop (so no overlays) • Policing of behavior aggregates (BA’s) to specified peak rate • Out-of-profile packets are dropped • “Should”s • Shaping BA on egress • Conditioning by ingress/egress pairs • Plus, Value-Adds • Integrated measurement infrastructure • Common operational practices • Pre-standards inter-BB signaling

  6. MREN /STAR TAP MAGPI Texas GP NYSERNet SingAREN NCNI Merit PSC APAN NREN ... ... Initial QBone Participants and Connectivity** Actual connectivity and participant group will vary as deployment progresses CRC UNB UBC NWU iCAIR EVL CTIT CA*Net2 UMN ARDNOC IU RISQ SURFNet NTU NUS ANL Ames KDD Labs ESNet Other NASA Labs OtherNGIXs Korea UMass Other DOE Labs LBNL Abilene vBNS UNC CMU UMich TAMU Duke NCSU UPenn 11 February, 1999

  7. A QBone Demo Testing Premium Service LDAP Server Policy Server LDAP NC State Raleigh RT Stereo Video RT Stereo Video Source COPS MCNC, RTP Nano- Manipulator Client Marking Policing Shaping Policing Shaping ATM Policing Shaping Nano- Manipulator Marking Marking DiffServ Router DiffServ Router DiffServ Router DiffServ Router DiffServ Router Ethernet Switch Ethernet Switch Controlled Contending Best Effort Traffic Video Conferencing Video Conferencing Highway 1 Washington D.C UNC, Chapel Hill • Premium service contends with Best Effort traffic • Limited resources require limited granting of Premium service to high-performance applications

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