Abstract: Methods and systems are provided. A method includes managing, by a software defined network (SDN) controller, OpenFlow rules stored on an OpenFlow network device having a ternary content addressable memory (TCAM). The OpenFlow rules include unreachable OpenFlow rules and reachable OpenFlow rules. The managing step includes querying at least one OpenFlow rule from among the unreachable OpenFlow rules and the reachable OpenFlow rules on the at least one OpenFlow network device. The managing step further includes determining whether any of the OpenFlow rules are reachable or unreachable from indicia used to mark the OpenFlow rules as reachable or unreachable. The managing step also includes causing a removal of the unreachable OpenFlow rules from the OpenFlow network device.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: A method for detecting Quality of Service degradation in a network flow includes collecting time series data representing statistical information pertaining to a network flow registered with a network flow monitoring service. The time series data is collected from at least two network elements on a path of the network flow configured to report the time series data. The method further includes indicating Quality of Service degradation in the network flow based on a similarity of the time series data to expected time series data being below a specified similarity threshold, and triggering at least one action to address the similarity being below the specified similarity threshold.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: Methods and systems are provided. A method includes managing, by a software defined network (SDN) controller, OpenFlow rules stored on an OpenFlow network device having a ternary content addressable memory (TCAM). The OpenFlow rules include unreachable OpenFlow rules and reachable OpenFlow rules. The managing step includes querying at least one OpenFlow rule from among the unreachable OpenFlow rules and the reachable OpenFlow rules on the at least one OpenFlow network device. The managing step further includes determining whether any of the OpenFlow rules are reachable or unreachable from indicia used to mark the OpenFlow rules as reachable or unreachable. The managing step also includes causing a removal of the unreachable OpenFlow rules from the OpenFlow network device.

Abstract: Methods and systems are provided. A method includes managing, by a software defined network (SDN) controller, OpenFlow rules stored on an OpenFlow network device having a ternary content addressable memory (TCAM). The OpenFlow rules include unreachable OpenFlow rules and reachable OpenFlow rules. The managing step includes querying at least one OpenFlow rule from among the unreachable OpenFlow rules and the reachable OpenFlow rules on the at least one OpenFlow network device. The managing step further includes determining whether any of the OpenFlow rules are reachable or unreachable from indicia used to mark the OpenFlow rules as reachable or unreachable. The managing step also includes causing a removal of the unreachable OpenFlow rules from the OpenFlow network device.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: Methods and systems are provided. A method includes managing, by a software defined network (SDN) controller, OpenFlow rules stored on an OpenFlow network device having a ternary content addressable memory (TCAM). The OpenFlow rules include unreachable OpenFlow rules and reachable OpenFlow rules. The managing step includes querying at least one OpenFlow rule from among the unreachable OpenFlow rules and the reachable OpenFlow rules on the at least one OpenFlow network device. The managing step further includes determining whether any of the OpenFlow rules are reachable or unreachable from indicia used to mark the OpenFlow rules as reachable or unreachable. The managing step also includes causing a removal of the unreachable OpenFlow rules from the OpenFlow network device.

Abstract: One aspect includes a method to assess virtual network performance, comprising: selecting at least a given pair of endpoints; determining at least one virtual path between the given pair of endpoints; determining at least one underlying network path between the given pair of endpoints; generating one or more flows between the given pair of endpoints over both the virtual path and the underlying network path; collecting one or more measurements for the virtual path and for the underlying network path; and determining at least one score for the given pair of endpoints at least in part by computing at least one ratio between at least one of the one or measurements for the virtual path and at least one of the one or more measurements for the underlying network path.

Abstract: A method and system are provided. The method includes automatically transferring configuration information from at least one network device to at least one software defined networking controller. The automatically transferring step includes retrieving configuration information associated with the at least one network device, converting the configuration information into a format usable by the at least one software defined networking controller, and configuring the at least one software defined networking controller with the converted configuration information.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: A method for detecting Quality of Service degradation in a network flow includes collecting time series data representing statistical information pertaining to a network flow registered with a network flow monitoring service. The time series data is collected from at least two network elements on a path of the network flow configured to report the time series data. The method further includes indicating Quality of Service degradation in the network flow based on a similarity of the time series data to expected time series data being below a specified similarity threshold, and triggering at least one action to address the similarity being below the specified similarity threshold.

Abstract: Methods and a system are provided for detecting a Quality of Service degradation in a network flow. A method includes configuring, by a monitoring element, at least two network elements on a path of a network flow to report statistical information pertaining to the network flow as time series data. The method further includes collecting, by the monitoring element, the time series data from the network elements. The method also includes computing, by the monitoring element, a similarity of the time series data. The method additionally includes indicating, by the monitoring element, the Quality of Service degradation when the similarity is below a specified similarity threshold.

Abstract: A downstream element in a pipeline processing a network flow receives a first request and executes an indexing function to compute an index into a control block for storing state information associated with the data packet. The downstream element transmits a request to an upstream element to include the index as a tag in one or more subsequent data packets that comprises the plurality of network fields and the associated values. Subsequent data packet may be received at the downstream element with the tag having the index information. The downstream element may process the subsequent data packet based on the tag without having to execute the indexing function on the subsequent data packet.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: A downstream element in a pipeline processing a network flow receives a first request and executes an indexing function to compute an index into a control block for storing state information associated with the data packet. The downstream element transmits a request to an upstream element to include the index as a tag in one or more subsequent data packets that comprises the plurality of network fields and the associated values. Subsequent data packet may be received at the downstream element with the tag having the index information. The downstream element may process the subsequent data packet based on the tag without having to execute the indexing function on the subsequent data packet.

Abstract: One aspect includes a method to assess virtual network performance, comprising: selecting at least a given pair of endpoints; determining at least one virtual path between the given pair of endpoints; determining at least one underlying network path between the given pair of endpoints; generating one or more flows between the given pair of endpoints over both the virtual path and the underlying network path; collecting one or more measurements for the virtual path and for the underlying network path; and determining at least one score for the given pair of endpoints at least in part by computing at least one ratio between at least one of the one or measurements for the virtual path and at least one of the one or more measurements for the underlying network path.