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Luyuan Fang, Microsoft ACTN BoF , IETF 90, July 24, 2014

This document outlines the need for hierarchical control of optical transport networks to enable global data center interconnectivity and dynamic connectivity across multi-domain networks. It addresses requirements for network abstraction, path computation, virtual connections, and abnormality reporting.

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Luyuan Fang, Microsoft ACTN BoF , IETF 90, July 24, 2014

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  1. ACTN Use Case for Multi Domain Data Center Transport Interconnectdraft-fang-actn-multidomain-dci-00.txt Luyuan Fang, Microsoft ACTN BoF, IETF 90, July 24, 2014

  2. Global Data Center Interconnect • Data Centers are geographically spread and homed on primarily internal transport network domains or on trusted external provider domains. • There may be organizational boundaries within internal domains. • Many applications require dynamic and elastic connectivity across multi-domain networks. • Each domain may employ different vendor equipment and/or heterogeneous control/management technology for its domain operation (e.g., control plane, NMS-based, SDN control, etc.) Domain 2 DC C DC D DC A DC E Domain 3 Domain 1 Domain 4 DC B DC F

  3. Multi-domain DCI Applications • VM Migration • Global Load Balancing • Real-time Disaster Recovery • On-demand Virtual Connection/Circuit Services

  4. Global DCI Operation/Control View Global Data Center Interconnect Operation Control E2E Optical Network Control Optical Network Control 3 Optical Network Control 2 Optical Network Control 1 DC E DC A DC F • Need a hierarchical operation/control of optical transport network • Building on top of existing network control technologies/domains to be able to E2E • network control to help global DCI transport operation/control • Need standard-based abstraction/APIs and protocols for E2E network control and global • DCI operation control. DC B DC C DC D Transport Network 3 Transport Network1 Transport Network2

  5. Requirements • The interfaces between the Data Center Operation and each transport network domain SHOULD support standards-based abstraction with a common information/data model. • Network Query (Pull Model) capability from the Data Center Operation to each transport network domain to collect potential resource availability (e.g., BW availability, latency range, etc.) between a few data center locations and the negotiation capability on the abstraction level. • Network Path Computation Request from the Data Center Operation to each transport network domain to estimate the path availability.

  6. Requirements (Cont.) • Network Virtual Connections/Circuits Request from the Data Center Operation to each transport domain to establish an end-to-end virtual connections/circuits. • Network Virtual Connections/Circuits Modification Request from the Data Center Operation to each transport domain to change QoS/SLA, protection schemes of the existing connections/circuits. • Network Abnormality Report (Push Model) from each transport domain to the Data Center Operation indicating the service impacting network conditions or the potential degradation indications of the existing virtual connections/circuits.

  7. Summary/Next Steps • Refine the requirements • Security requirements need to be added. • Comments are always welcome. Thanks You!

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