Systems, methods, and apparatus to identify media devices are disclosed. An example network communications monitor includes network interface circuitry, computer readable instructions, and processor circuitry. The processor circuitry is to execute the computer readable instructions to detect, via the network interface circuitry, multiple network communications transmitted on a home network within the household, access panelist data that associates a panelist of the household with a panelist device of the panelist, determine, based on the panelist data, that one or more of the multiple network communications are associated with the panelist device, and cause storage of data identifying the one or more network communications in association with the panelist.

Systems, methods, and apparatus to identify media devices are disclosed. An example network communications monitor includes network interface circuitry, computer readable instructions, and processor circuitry. The processor circuitry is to execute the computer readable instructions to detect, via the network interface circuitry, multiple network communications transmitted on a home network within the household, access panelist data that associates a panelist of the household with a panelist device of the panelist, determine, based on the panelist data, that one or more of the multiple network communications are associated with the panelist device, and cause storage of data identifying the one or more network communications in association with the panelist.

Provided is an Address Resolution Protocol (ARP) learning method, which includes: determining, by a forwarding chip, an IP address of a target device; when an MAC address corresponding to the IP address of the target device is not stored in an ARP forwarding table, generating and broadcasting, by the forwarding chip, an ARP request message, wherein the ARP request message includes the IP address of the target device; receiving, by the forwarding chip, an ARP response message fed back by the target device, wherein the ARP response message includes an MAC address of the target device; and writing, by the forwarding chip, the IP address of the target device and the MAC address corresponding to the IP address into the ARP forwarding table. The present disclosure also provides a node device and a computer-readable medium.

Provided is an Address Resolution Protocol (ARP) learning method, which includes: determining, by a forwarding chip, an IP address of a target device; when an MAC address corresponding to the IP address of the target device is not stored in an ARP forwarding table, generating and broadcasting, by the forwarding chip, an ARP request message, wherein the ARP request message includes the IP address of the target device; receiving, by the forwarding chip, an ARP response message fed back by the target device, wherein the ARP response message includes an MAC address of the target device; and writing, by the forwarding chip, the IP address of the target device and the MAC address corresponding to the IP address into the ARP forwarding table. The present disclosure also provides a node device and a computer-readable medium.

Some embodiments provide a method of addressing failures in a network comprising a computer with at least first and second network interface cards (NICs). The method designates the first and second NICs respectively as primary and secondary NICs of the computer and respectively assigns first and second network addresses to the first and second NICs. The method iteratively sends health monitoring messages to a set of one or more destinations through the first NIC using the first network address. Based on the health monitoring messages, the method detects a potential failure of an element in the network. Based on the detected potential failure, the method redesignates the first and second NICs respectively as secondary and primary NICs and respectively reassigns the first and second network addresses to the second and first NICs. The redesignation accounts for a possibility that the detected potential failure relates to the first NIC.

Some embodiments provide a method of addressing failures in a network comprising a computer with at least first and second network interface cards (NICs). The method designates the first and second NICs respectively as primary and secondary NICs of the computer and respectively assigns first and second network addresses to the first and second NICs. The method iteratively sends health monitoring messages to a set of one or more destinations through the first NIC using the first network address. Based on the health monitoring messages, the method detects a potential failure of an element in the network. Based on the detected potential failure, the method redesignates the first and second NICs respectively as secondary and primary NICs and respectively reassigns the first and second network addresses to the second and first NICs. The redesignation accounts for a possibility that the detected potential failure relates to the first NIC.

A system for providing a Domain Name System (DNS) service may include providing an agent for installation on a subscriber device. The subscriber device may be connected to the DNS service via an entry point device. The system includes receiving, from the agent, agent data indicative of a subscriber identifier and a unique identifier associated with the entry point device. The system may then determine, based on the agent data, a current Internet Protocol (IP) address associated with the entry point device and associate the unique identifier with the subscriber identifier. The system may then dynamically map the subscriber identifier to the current IP address and provide DNS service to the subscriber device based on the current IP address.

Techniques are described for managing communications for a managed virtual computer network overlaid on a distinct substrate computer network, including for communications involving computing nodes of the managed virtual computer network that use an alternative addressing scheme to direct network packets and other network communications to intended destination locations by using textual network node monikers instead of numeric IP addresses to represent computing nodes at a layer 3 or “network layer” of a corresponding computer networking stack in use by the computing nodes. The techniques are provided without modifying or configuring the network devices of the substrate computer network, by using configured modules to manage and modify communications from the logical edge of the substrate network.

Systems, methods, and apparatus to identify media devices are disclosed. An example network communications monitor includes network interface circuitry, computer readable instructions, and processor circuitry. The processor circuitry is to execute the computer readable instructions to detect, via the network interface circuitry, multiple network communications transmitted on a home network within the household, access panelist data that associates a panelist of the household with a panelist device of the panelist, determine, based on the panelist data, that one or more of the multiple network communications are associated with the panelist device, and cause storage of data identifying the one or more network communications in association with the panelist.

Systems, methods, and apparatus to identify media devices are disclosed. An example network communications monitor includes network interface circuitry, computer readable instructions, and processor circuitry. The processor circuitry is to execute the computer readable instructions to detect, via the network interface circuitry, multiple network communications transmitted on a home network within the household, access panelist data that associates a panelist of the household with a panelist device of the panelist, determine, based on the panelist data, that one or more of the multiple network communications are associated with the panelist device, and cause storage of data identifying the one or more network communications in association with the panelist.