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CSO Coordination Meeting 80th IETF, Prague Agenda • CSO IRTF Proposal (Young, 10 min) • CSO and ALTO (Greg, 10 min) • Carrier Perspective – Network Capability (Javier, 5 minutes) – Synchronized Recovery (Ning, 5 minutes) – Application-Network Integration (Kohei, 5 minutes) • Vendor Perspective (Paul, 5 minutes) • Open Discussion (30 minutes) • Wrap-up 80th IETF, Prague Background • This is NOT the same as previous conversation in IETF. • We are trying to identify clear research problems associated with CSO in IRTF context. – Is it possible to do network resource aware global load balancing, improve responsiveness between application and network and resiliency? – What are the key building blocks that would enable CSO? CSO Context: Evolving relationship between Data Centers and Networks Server Racks Co-Lo DWDM AS (L2) Router DWDM (CE) Metro ULH DWDM PE P ULH ULH P PE ULH DWDM Data Center (a) Existing Server Racks Co-Lo OTP AS Lambda/OTU/Ethernet OTN MPLS TP (CE) PE Data Center ULH ULH ULH PE ULH (b) New • Significant changes in network access, e.g., from a drop-off of an optical metro ring (a wavelength or two), to an end destination in a long haul DWDM system (many wavelengths, multiple fibers). • Emerging applications require high bandwidth such as sporting events, live converts, 3D video applications, remote medical surgery and so on. • Network capability that provides flexible, dynamic and reliable transport needs to be considered for mission-critical applications 80th IETF, Prague Goals: Improve resource utilization, resilience, and QoE for datacenter based network applications ACG (GLB) Application (server) CE 1 DC 1 User Request R Edge - CE 2 Core Access DC 2 Edge SCG Transport Network Core - Edge Core Core Edge Direct AccessR (Corporate User) DC 3 80th IETF, Prague R Direct Access (Corporate User) Key Research Problems under CSO • • • • Joint application/network Resource optimization (global load balancing) Responsiveness to quickly changing demands from/to application to/from network Enhanced service resilience (via cooperative recovery techniques between application and network) Quality of application experience (QoE) enhancement (via better use of existing network and application resources) 80th IETF, Prague Tentative Deliverables • Develop baseline network/application architecture and model – general enough to include most cases of interest. – Define the various "trust or lack of" in the relationships between various key players in both the application and network stratum. – Define key interfaces and their functionality and relate these to current standards and potential future standards. • Demonstrate feasibility of CSO concept via prototype and experiments. – Determine scalable mechanisms for application level support for network recovery and network support for application recovery. – Experiment network capabilities (e.g., IP, MPLS, GMPLS) in providing support for dynamic application loads, scaling and QoE enhancement. 80th IETF, Prague