[Object] Effectively perform data communication [Solving Means] A communication device includes: a LINK that generates a first output signal on a basis of a first external signal from a first external device, outputs the first output signal to a second external device, generates a second output signal on a basis of a second external signal from the second external device, and outputs the second output signal to the first external device, in which each of the first output signal and the second external signal includes command information indicating content of a command transmitted from the first external device, final-destination-device-identification-information for identifying a final destination device of data transmitted from the first external device, internal address information indicating an internal address of the final destination device, data length information indicating a length of the data transmitted from the first external device, and data-end-position-information indicating an end position of the data transmitted from the first external device.

Some embodiments provide a novel method for assigning a unique internet protocol version 6 (IPv6) link-local address to each interface of a software router implementing a plurality of logical interfaces for a corresponding plurality of logical networks. In some embodiments, the method, for each logical interface, determines a logical network identifier for a logical network corresponding to the logical interface and generates the link-local address based on that logical network identifier (e.g., a virtual network identifier (VNI)).

Some embodiments provide a novel method for assigning a unique internet protocol version 6 (IPv6) link-local address to each interface of a software router implementing a plurality of logical interfaces for a corresponding plurality of logical networks. In some embodiments, the method, for each logical interface, determines a logical network identifier for a logical network corresponding to the logical interface and generates the link-local address based on that logical network identifier (e.g., a virtual network identifier (VNI)).

Example implementations described herein are directed to systems and methods for managing internet protocol (IP) address assignment to servers on rack(s) based on their physical locations within the rack(s). Through the example implementations, the physical location of a server within a data center rack can be determined based on the IP address. Example implementations can involve issuing a ping local to determine a plurality of servers; retrieving power on time, current system time, and operating system (OS) uptime for each of the plurality of servers; determining a power on order for the plurality of servers; determining physical locations of the plurality of servers within one or more racks based on installation instructions and power on order; and assigning IP addresses to the plurality of servers based on the physical locations.

Example implementations described herein are directed to systems and methods for managing internet protocol (IP) address assignment to servers on rack(s) based on their physical locations within the rack(s). Through the example implementations, the physical location of a server within a data center rack can be determined based on the IP address. Example implementations can involve issuing a ping local to determine a plurality of servers; retrieving power on time, current system time, and operating system (OS) uptime for each of the plurality of servers; determining a power on order for the plurality of servers; determining physical locations of the plurality of servers within one or more racks based on installation instructions and power on order; and assigning IP addresses to the plurality of servers based on the physical locations.

This disclosure relates to transmitting data packets from a source to a destination within a communications network. A data packet is received from the source located in a local sub-network of the network. The data packet includes a first network layer protocol header having a source address containing the local sub-network address of the source, a destination address of the destination, a first field indicating a length of the source address and a second field indicating a length of the destination address. The first network layer protocol header is transformed by modifying the source address and the first field indicating the length of the source address, such that the modifying includes appending to the local sub-network address a prefix of the sub-network to make the source address an address of a higher-level network. The data packet is then forwarded toward the destination in the higher-level network.

A media access control (MAC) address sending method, apparatus, and system, and a related device are provided. The method is implemented by a first network device connected to a first virtual machine and a second virtual machine. The first network device obtains a MAC address of the first virtual machine; and when the first virtual machine and the second virtual machine have a same MAC address and are located in different virtual local area networks, sends a route to a second network device, where the route includes route information, and the route information includes the MAC address, first virtual local area network information of the first virtual machine, and second virtual local area network information of the second virtual machine. In this method, information about virtual machines having a same MAC address in different virtual local area networks is aggregated to one route.

A system and method are provided for a network device for use with a client device having a hostname and a MAC address. The network device contains a memory that has a second hostname and a second MAC address stored within the memory. The second MAC address corresponds to the second hostname. The memory also contains a processor configured to execute instructions stored on the memory to cause the network device to: receive, from the client device, the hostname and the MAC address; determine whether the MAC address is randomized; provide an instruction to the client device to inform a user of the client device that the client device hostname is registered when the hostname matches the second hostname and the MAC address is randomized.

A method in which a communication device can be configured with a MAC address so that when the user logs into a network environment using a communication device from among a number of communication devices a MAC address is assigned to the user and is specific to the user. The MAC address assignment can be used for pairing with a communication device assigned to the user (e.g. a near-field communication device). A database containing MAC addresses can be connected to communication devices through a network and can provide user-specific MAC addresses that are readable into or otherwise transmittable to a predetermined communication device when a user logs into the network. The database can be managed by a server or other computer device of the network.

A method in which a communication device can be configured with a MAC address so that when the user logs into a network environment using a communication device from among a number of communication devices a MAC address is assigned to the user and is specific to the user. The MAC address assignment can be used for pairing with a communication device assigned to the user (e.g. a near-field communication device). A database containing MAC addresses can be connected to communication devices through a network and can provide user-specific MAC addresses that are readable into or otherwise transmittable to a predetermined communication device when a user logs into the network. The database can be managed by a server or other computer device of the network.