Abstract: A match field and an action for a flow rule may be received from a software defined networking application. A mapping of table identifications to attributes may be analyzed to obtain a table identification. The table identification may be for a pipeline table of a network device. The pipeline table may be able to implement the match field and the action.

Abstract: A hybrid software defined networking (SDN) switch has a forwarding table including local flow entries and SDN flow entries. In one example, the hybrid SDN switch may send both local flow entries and SDN flow entries to a SDN controller.

Abstract: Examples provided herein describe a method for providing security for Internet of Things (IoT) devices. For example, a data packet from an IoT device may be received at an edge device. A signature associated with the IoT device may be accessed at the edge device, where the signature includes network layer information about the IoT device. A set of rules may be applied by the edge device to validate the IoT device based on the accessed signature. Responsive to the IoT device being validated based on the accessed signature, received data packet, and the applied set of rules, the edge device may process the data packet from the IoT device.

Abstract: Implementing gateway redundancy in a network includes sending a message to a first device of multiple devices of a network through a controller where the first device is a master gateway and a second device of the multiple devices is a backup gateway, and making a decision as to whether the first device remains as the master gateway.

Abstract: Provided is a method of troubleshooting an OpenFlow network. A test packet is sent to a test node on the OpenFlow network. A response from the test node is validated against an expected response. If the response is consistent with the expected response, a modified test packet is sent to a further test node on the OpenFlow network. If the response is inconsistent with the expected response, a notification is provided to a user.

Abstract: In some examples, method includes receiving, with a software-defined network (SDN) controller in an SDN containing a plurality of controlled network nodes, a dynamic network parameter for the SDN from a controlled network node in the SDN, selecting, with the SDN controller, an adjusted spanning tree protocol (STP) path cost value for a path cost along a datapath between a source network node and a destination network node in the SDN based on the received dynamic network parameter, and installing, with the SDN controller, the adjusted STP path cost value on controlled network nodes along the datapath.

Abstract: A method, system, and computer-readable storage device for detecting conflicts in a hybrid network device is described herein. A hybrid network device may receive a local controller command from a network management device (e.g., a laptop, operated by a network administrator, executing a command line interface). The hybrid network device may convert the local controller command to a software defined command format. The hybrid network device may detect a lack of conflict between the converted local controller command and active flows represented in an active flow repository. Based on the detected lack of conflict, the hybrid network device may update a traffic forwarding table of the hybrid network device in accordance to the local controller command.

Abstract: A match field and an action for a flow rule may be received from a software defined networking application. A mapping of table identifications to attributes may be analyzed to obtain a table identification. The table identification may be for a pipeline table of a network device. The pipeline table may be able to implement the match field and the action.

Abstract: Provided is a method of troubleshooting an OpenFlow network. A test packet is sent to a test node on the OpenFlow network. A response from the test node is validated against an expected response. If the response is consistent with the expected response, a modified test packet is sent to a further test node on the OpenFlow network. If the response is inconsistent with the expected response, a notification is provided to a user.

Abstract: A method and system for operating a virtual router system. A system health index for each of a plurality of physical routers in a virtual router system is determined, and virtual router operation for the physical routers is suspended in response to the system health index.

Abstract: A method for a network device reporting system state to a controller, the method comprising a network device: determining a system state of the network device; constructing a system state message including a header and a payload; the header including a message type field indicating that the message relates to system state; the payload including a system state notification comprising a system state type field indicating a type of system state which is being communicated, and a value field indicating a system state value; and sending the system state message from the network device to the controller over a software defined networking (SDN) protocol channel.

Abstract: Flow activity is measured on a network device which may be OpenFlow-enabled. A hardware table on the network device, wherein the hardware table includes a record for each flow entry and a hit bit corresponding to each flow entry, is polled for determining status of the hit bit corresponding to each flow entry. An activity measure is updated with the status of the hit bit corresponding to each flow entry.

Abstract: A system and method to receive session information corresponding to a session associated with a server, and translate the session information into translated session information including a topology parameter and a data parameter. The translated session information is to direct a controller to provision a network path according to the translated session information. The network path is to be compliant with the topology parameter and data parameter.

Abstract: Flow activity is measured on a network device which may be OpenFlow-enabled. A hardware table on the network device, wherein the hardware table includes a record for each flow entry and a hit bit corresponding to each flow entry, is polled for determining status of the hit bit corresponding to each flow entry. An activity measure is updated with the status of the hit bit corresponding to each flow entry.

Abstract: A method for application broadcast forwarding for routers running redundancy protocols in a network is provided. The network includes a first router running at least one program instance of a redundancy protocol at one interface, and a second router running at least one program instance of the redundancy protocol at one interface. A relay agent is enabled on both the first and second routers. The method includes, for each router, determining at least one preference ID for the router, determining a broadcast ID of each incoming broadcast packet, matching the broadcast ID of the incoming broadcast packet with the at least one preference ID of the router, and relaying the incoming broadcast packet from a first network domain to a second network domain if the broadcast ID of the incoming broadcast packet matches one preference ID of the router.

Abstract: A system and method for data communication in OpenFlow networks are disclosed, In one example, each flow entry, in a flow table in an OpenFlow switch of a network device, is classified as an active flow entry or an inactive flow entry upon detecting a change in a system state event or when a new flow entry is programmed by an OpenFlow controller in the OpenFlow network. Further, each incoming packet is matched against each active flow entry in the flow table by the OpenFlow switch until a matching active flow entry is found. Furthermore, each incoming packet is forwarded from the OpenFlow switch based on the found matching active flow entry in the flow table.

Abstract: Load-aware spanning tree reconfiguration includes determining volumes for information flows in an existing spanning tree in a network. The spanning tree is reconfigured based on the volumes to provide higher-volume information flows with shorter paths in the reconfigured spanning tree.

Abstract: A method for predictive designated router (DR) handover in a multicast network is described herein. The network includes one or more sources, one or more receivers, a rendezvous point (RP) network device, a DR network device, and a plurality of DR-capable network devices. A prediction of failover of the DR network device is determined, prior to an occurrence of failover. In response to the prediction, a protocol independent multicast (PIM) Hello packet that relinquishes the DR role is transmitted. A determination is made as to whether a DR-capable network device is present in the multicast network.

Abstract: A method and system for operating a virtual router system. A system health index for each of a plurality of physical routers in a virtual router system is determined, and virtual router operation for the physical routers is suspended in response to the system health index.

Abstract: A method for application broadcast forwarding for routers running redundancy protocols in a network is provided. The network includes a first router running at least one program instance of a redundancy protocol at one interface, and a second router running at least one program instance of the redundancy protocol at one interface. A relay agent is enabled on both the first and second routers. The method includes, for each router, determining at least one preference ID for the router, determining a broadcast ID of each incoming broadcast packet, matching the broadcast ID of the incoming broadcast packet with the at least one preference ID of the router, and relaying the incoming broadcast packet from a first network domain to a second network domain if the broadcast ID of the incoming broadcast packet matches one preference ID of the router.