Patent
Secure network switching infrastructure
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TLDR
In this article, a flow table is used to forward packets under the direction of the controller, along with information about which port the packet arrived on, and when a packet arrives that is in the flow table, it is forwarded according to the controller's directive.Abstract:
Use of a centralized control architecture in a network. Policy declaration, routing computation, and permission checks are managed by a logically centralized controller. By default, hosts on the network can only route to the network controller. Hosts and users must first authenticate themselves with the controller before they can request access to the network resources. The controller uses the first packet of each flow for connection setup. When a packet arrives at the controller, the controller decides whether the flow represented by that packet should be allowed. The switches use a simple flow table to forward packets under the direction of the controller. When a packet arrives that is not in the flow table, it is forwarded to the controller, along with information about which port the packet arrived on. When a packet arrives that is in the flow table, it is forwarded according to the controller's directive.read more
Citations
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Patent
Openflow communication system and openflow communication method
TL;DR: In this paper, an OpenFlow controller generates a registration flow entry which is stored in a flow table of a specific OpenFlow switch arranged on a route of the communication flow, and an encapsulated packet is generated by reflating the registration flow entries and an ordinary packet.
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Distributed logical l3 routing
TL;DR: In this paper, a method for logically routing a packet between a source machine in a first logical domain and a destination machine that is in a second logical domain is described, which configures a router in a host that includes the second-level managed switching element.
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TL;DR: In this paper, the authors propose a virtual platform in which one or more distributed virtual switches can be created for use in virtual networking, which can support integration with traditional IP networks and support sophisticated IP technologies including NAT functionality, stateful firewalling and notifying the IP network of workload migration.
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András Kern,Dávid Jocha +1 more
TL;DR: In this article, the authors present a method for notifying a controller of a change to a packet forwarding configuration of the network element by sending a message to the controller over the communication channel.
References
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Patent
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