Software Defined Networking - 3
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The document discusses SDN application plane and cloud networking. It describes a Network Services Abstraction Layer that provides an abstract view of network resources and control plane functionality similar to a hypervisor. It also discusses CloudNAAS, where a cloud customer uses a policy language to specify network services, which are then translated into a communication matrix and network directives installed on data plane elements via OpenFlow. Main CloudNAAS constructs include addresses, groups, middleboxes, and virtual networks connecting VMs and services.
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- 4. NETWORK SERVICES ABSTRACTION LAYER provide the abstract view of network resources provide a generalised view of control plane functionality similar to hypervisor or VM monitor that decouples apps from the OS and hardware provides network virtualisation capability that allows different views of the underlying data plane
- 7. CLOUDNAAS cloud customer uses a simple policy language to specify network services the cloud controller converts the policy in to a communication matrix. communication matrix is translated in to network- level directives for data plane forwarding elements. the network-level directives are installed into the network devices via openflow
- 8. MAIN CONSTRUCTS OF CLOUDNAAS address (customer visible custom address for a VM) group (logical group of one or more VMs) middle box (Ex: intrusion detection, audit compliance system) networkservice (specify network capabilities) virtual net (connects group of VMs and associated network services)
- 10. CLOUDNAAS cloud controller managing IaaS for managing VM instances. manages the virtual switch on each physical server. user can define their own policy when can be converted to a matrix and are transmitted to network controller. network controller manages the data plane virtual and physical switches. monitors the traffic and performance on the data plane
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