Abstract: A readout circuit of infrared focal plane array (FPA) and a control method therefor. The readout circuit is connected to an infrared FPA, which comprises a plurality of pixels. The readout circuit comprises an integral and readout unit, a correction unit and a digital control unit. For each pixel, the correction unit determines an initial bias value based on a to-be-corrected parameter value for the pixel; the integral and readout unit determines, based on a first current corresponding to the initial bias value and a second current caused a pixel response temperature value, a responsive voltage value for the pixel; and the digital control unit adjusts, based on a comparison result between the responsive voltage value and a preset voltage value, the to-be-corrected parameter value for the pixel, to obtain an adjusted parameter value, and determines, based on the adjusted parameter value, an optimal corrected parameter value for the pixel.

Abstract: The disclosure provides a method for authenticating a network agent deployed in a networking environment. The method generally includes receiving, by a network controller in the networking environment, a name of an external node where the network agent is running and a token associated with the external node; in response to receiving the name of the external node, obtaining, by the network controller, a secret associated with the token; parsing, by the network controller, the secret to determine an expected external node name corresponding to the token; comparing the expected external node name with the received external node name; and trusting the network agent when the expected external node name and the received external node name match.

Abstract: A readout circuit of infrared focal plane array (FPA) and a control method therefor. The readout circuit is connected to an infrared FPA, which comprises a plurality of pixels. The readout circuit comprises an integral and readout unit, a correction unit and a digital control unit. For each pixel, the correction unit determines an initial bias value based on a to-be-corrected parameter value for the pixel; the integral and readout unit determines, based on a first current corresponding to the initial bias value and a second current caused a pixel response temperature value, a responsive voltage value for the pixel; and the digital control unit adjusts, based on a comparison result between the responsive voltage value and a preset voltage value, the to-be-corrected parameter value for the pixel, to obtain an adjusted parameter value, and determines, based on the adjusted parameter value, an optimal corrected parameter value for the pixel.

Abstract: Example methods and systems for intent-based network virtualization design are disclosed. One example may comprise: obtaining configuration information and traffic information associated with multiple virtualized computing instances, processing the configuration information and traffic information to identify network connectivity intents and mapping the network connectivity intents to a logical network topology template. Based on a switching intent, a first group may be assigned to a logical network domain and the logical network topology template modified to include a logical switching element. Based on a routing intent, the logical network topology template may be modified to include a logical routing element. A logical network may be configured based on the modified logical network topology template to satisfy the switching intent and routing intent.

Abstract: Example methods and systems for a network management entity to perform topology-aware control information dissemination in a software-defined networking (SDN) environment. The method may comprise obtaining group topology information specifying a network group, and a network configuration object that references the network group. The method may also comprise: processing the group topology information to identify, from multiple members of the network group, a first member that is relevant to a first host; and processing the group topology information to identify, from the multiple members, a second member that is irrelevant to the first host. The method may further comprise: generating and sending, to the first host, control information associated with a subset of the network group. The subset may include the first member but exclude the second member.

Abstract: Techniques for measuring the memory usage of Java programs are provided. In one set of embodiments, a Java agent can detect that a Java Virtual Machine (JVM) is loading a Java class used by a Java program. The Java agent can further determine a class name of the Java class and determine that the class name matches an entry in a first list included in a user-defined configuration file. The Java agent can then dynamically insert bytecode into a constructor of the Java class, where the inserted bytecode includes logic for registering a memory reference to an object created via the constructor.

Abstract: Example methods and systems for intent-based network virtualization design are disclosed. One example may comprise: obtaining configuration information and traffic information associated with multiple virtualized computing instances, processing the configuration information and traffic information to identify network connectivity intents and mapping the network connectivity intents to a logical network topology template. Based on a switching intent, a first group may be assigned to a logical network domain and the logical network topology template modified to include a logical switching element. Based on a routing intent, the logical network topology template may be modified to include a logical routing element. A logical network may be configured based on the modified logical network topology template to satisfy the switching intent and routing intent.

Abstract: Example methods and systems for intent-based network virtualization design are disclosed. One example may comprise: obtaining configuration information and traffic information associated with multiple virtualized computing instances, processing the configuration information and traffic information to identify network connectivity intents and mapping the network connectivity intents to a logical network topology template. Based on a first switching intent, a first group may be assigned to a first logical network domain and the logical network topology template configured to include a first logical switching element. Based on a second switching intent, a second group may be assigned to a second logical network domain and the logical network topology template configured to include a second logical switching element. Based on a routing intent, the logical network topology template may be configured to include a logical routing element.

Abstract: Example methods and systems for intent-based network virtualization design are disclosed. One example may comprise: obtaining configuration information and traffic information associated with multiple virtualized computing instances, processing the configuration information and traffic information to identify network connectivity intents and mapping the network connectivity intents to a logical network topology template. Based on a first switching intent, a first group may be assigned to a first logical network domain and the logical network topology template configured to include a first logical switching element. Based on a second switching intent, a second group may be assigned to a second logical network domain and the logical network topology template configured to include a second logical switching element. Based on a routing intent, the logical network topology template may be configured to include a logical routing element.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile set with a logical network entity. The entity configuration profile set is a group of at least two entity configuration profiles for different types of settings to apply to logical network entities with which the entity configuration profile set is associated. The method identifies a host machine at which the logical network entity is implemented. The method distributes the entity configuration profile set and each of the at least two entity configuration profiles to the identified host machine.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile to a logical entity group that references at least two logical network entities. The entity configuration profile includes a set of configuration settings to apply to logical network entities with which the entity configuration profile is associated. The method associates the entity configuration profile with the logical network entities referenced by the logical entity group. Based on the associations of the entity configuration profile with the logical network entities, the method determines multiple host machines that require the configuration data for the entity configuration profile. The method distributes the entity configuration profile to the host machines.

Abstract: Example methods and systems for a network management entity to perform topology-aware control information dissemination in a software-defined networking (SDN) environment. The method may comprise obtaining group topology information specifying a network group, and a network configuration object that references the network group. The method may also comprise: processing the group topology information to identify, from multiple members of the network group, a first member that is relevant to a first host; and processing the group topology information to identify, from the multiple members, a second member that is irrelevant to the first host. The method may further comprise: generating and sending, to the first host, control information associated with a subset of the network group. The subset may include the first member but exclude the second member.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile set with a logical network entity. The entity configuration profile set is a group of at least two entity configuration profiles for different types of settings to apply to logical network entities with which the entity configuration profile set is associated. The method identifies a host machine at which the logical network entity is implemented. The method distributes the entity configuration profile set and each of the at least two entity configuration profiles to the identified host machine.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile to a logical entity group that references at least two logical network entities. The entity configuration profile includes a set of configuration settings to apply to logical network entities with which the entity configuration profile is associated. The method associates the entity configuration profile with the logical network entities referenced by the logical entity group. Based on the associations of the entity configuration profile with the logical network entities, the method determines multiple host machines that require the configuration data for the entity configuration profile. The method distributes the entity configuration profile to the host machines.

Abstract: A coherent optical receiver capable of receiving a multiple-wavelength optical signal comprising a series of single-band optical bursts is described. Each single-band optical burst is carried by one wavelength from among a plurality of wavelengths on a predetermined spectral band. The optical receiver can include optical generation means arranged to generate a local multiple-wavelength optical oscillator consisting of a plurality of optical lines at wavelengths corresponding to the wavelengths of the optical bursts, optical mixing means arranged to mix the optical oscillator and the optical signal in order to generate at least one mixed optical signal comprising a plurality of beats between at least one of the single-band optical bursts and the optical lines of the local multiple-wavelength optical oscillator, and a detection means to filter at least one beat between said single-band optical burst and one of the optical lines of the local multiple-wavelength optical oscillator.

Abstract: A coherent optical receiver capable of receiving a multiple-wavelength optical signal comprising a series of single-band optical bursts is described. Each single-band optical burst is carried by one wavelength from among a plurality of wavelengths on a predetermined spectral band. The optical receiver can include optical generation means arranged to generate a local multiple-wavelength optical oscillator consisting of a plurality of optical lines at wavelengths corresponding to the wavelengths of the optical bursts, optical mixing means arranged to mix the optical oscillator and the optical signal in order to generate at least one mixed optical signal comprising a plurality of beats between at least one of the single-band optical bursts and the optical lines of the local multiple-wavelength optical oscillator, and a detection means to filter at least one beat between said single-band optical burst and one of the optical lines of the local multiple-wavelength optical oscillator.

Abstract: A method is provided for pre-distorting an optical signal, intended to be transmitted over an optical transmission line and including a plurality of frequency division multiplexed optical sub-carriers. The optical signal is obtained from an optical conversion of an electrical signal including a plurality of frequency division multiplexed sub-carriers. This method includes obtaining a plurality of corrective factors, corresponding to the electrical sub-carriers, as a function of a plurality of values, determined for the optical sub-carriers, of a first parameter dependent on the power of the sub-carriers, and application of the corrective factors to the amplitudes of the corresponding electrical sub-carriers, so as to equalize, at the output of the optical transmission line, the values of the first parameter for the sub-carriers of the optical signal.

Abstract: A method is provided for pre-distorting an optical signal, intended to be transmitted over an optical transmission line and including a plurality of frequency division multiplexed optical sub-carriers. The optical signal is obtained from an optical conversion of an electrical signal including a plurality of frequency division multiplexed sub-carriers. This method includes obtaining a plurality of corrective factors, corresponding to the electrical sub-carriers, as a function of a plurality of values, determined for the optical sub-carriers, of a first parameter dependent on the power of the sub-carriers, and application of the corrective factors to the amplitudes of the corresponding electrical sub-carriers, so as to equalize, at the output of the optical transmission line, the values of the first parameter for the sub-carriers of the optical signal.