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HybNET: Network Manager for a Hybrid Network Infrastructure

HybNET: Network Manager for a Hybrid Network Infrastructure. Hui Lu, Nipun Arora , Hui Zhang, Cristian Lumezanu, Junghwan Rhee, Guofei Jiang. Background : SDN. Traditional network management configuration mechanisms are cumbersome and do not scale well to large scale systems

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HybNET: Network Manager for a Hybrid Network Infrastructure

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  1. HybNET: Network Manager for a Hybrid Network Infrastructure • Hui Lu, Nipun Arora, Hui Zhang, Cristian Lumezanu, Junghwan Rhee, Guofei Jiang

  2. Background : SDN • Traditional network management configuration mechanisms are cumbersome and do not scale well to large scale systems • With recent advances in cloud oriented networking infrastructure the need of a flexible OpenFlow Controller Traditional Switching SDN Switching Software Defined Networking (OpenFlow) • Centralized control plane of network switches • Controller decides on actions and routing • Switches perform only data plane forwarding

  3. Background : Cloud Computing • Cloud Computing Infrastructure usually needs rapid re-configuration and network management • Software Defined Networking is increasingly being adopted by industry leaders in managing large scale networks • However …

  4. Motivation • Transitioning to a Software Defined Networking is difficult • Existing Network infrastructure cannot be ignored, and only a phased network network transition is possible Full SDN UPGRADE Must upgrade to SDN incrementally Hybrid network is a reality -- Transitioning existing legacy deployment -- Budget limitations

  5. Key Highlights • Seamless network management of Hybrid Network with centralized Hybrid Controller • Specific focus on network isolation • Integrated with OpenStack Grizzly Platform • Introduce the concept of “virtualization in virtualization” and “virtual links” Hybrid-controller

  6. Architecture Overview OpenFlow controller Network Operator Create network Create sub-network Create ports … OpenFlow protocol Slice tables Input: Logical topology OpenFlow switch Requests API Hybrid Controller Path Finder VLAN tables Legacy switch Legacy switch Physical network database Mapping database Physical infrastructure

  7. Network Isolation Traditional network -- VLAN: packets are tagged and can only pass through ports with the same tagged id. SDN network -- Slice: packets are authenticated by various patterns; VLAN-ID port-based solution or MAC-based solution allow Lookup Flow rules OpenFlow Controller datapath_id OpenFlow Switch Ingress_port First Packet_in drop vid (port-based) src_mac (mac-based)

  8. Thanks for Listening!!! Nipun Arora NEC Laboratories America Princeton, NJ nipun@nec-labs.com

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