Sherwood, R., et al., ” Can the Production Network Be the Testbed?” Proc. of the 9 th USENIX Symposium on OSDI, 2010 Reference: [C+07] Cascado et al., “Ethane: Taking Control of the Enterprise,” ACM SIGCOMM ‘07, 37(4):69-74, Oct. 2007 Advanced Computer Networks Slicing a Network Want to create virtual networks from slices of physical network Each virtual network forwards traffic at line speed: no extra overhead in packet forwarding (data plane), no extra overhead in the forwarding rule specifications (control plane) Slicing isolates bandwidth, switch CPU, and flow table entries between virtual networks FlowVisor Assumes software-defined network with separate control and data planes Built on OpenFlow switches: NC and switches communicate using OpenFlow protocol Provides network slicing by adding a layer between the control and data planes Extra overhead in the communication between an OpenFlow switch and the centralized NC [C+07] Software-Defined Network (SDN) Centralized Network Control (NC) • monitors and approves all traffic • allows for complete policy-based control of the network • creates and populates switches with forwarding rules • access controls built in • network understands users, hardware, topology, and policies
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Slicing a Networksugih/courses/eecs589/... · Slicing a Network Want to create virtual networks from slices of physical network Each virtual network forwards traffic at line speed:
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