Abstract:
In a centralized control network including a plurality of software-defined network (SDN) switches, an address resolution system performs: a step in which an SDN control part for controlling the SDN switches receives an ARP request packet from a transmission host terminal; a step in which an address resolution protocol (ARP) control part checks if an MAC address corresponding to a destination IP address of the ARP request packet exists in an ARP table; and a step in which the SDN control part determines whether to broadcast the ARP request packet or not depending on the existence of an MAC address corresponding to the destination IP address in the ARP table.
Abstract:
PURPOSE: A virtual machine address management method using resource names is provided to prevent the shortage of IP addresses by managing an address of a VM(Virtual Machine) based on the resource names. CONSTITUTION: A VM generation request including resource name information of a VM is received from a client(241). A virtualization system generates the VM according to the VM generation request and allocates an IP address corresponding to the VM(242). The virtualization system transmits IP address information to the client(245). The virtualization system transmits resource name information and IP address information to a resource name server(248). The resource name server registers the resource name information and the IP address information in a name database(249). [Reference numerals] (210) Client; (220) Virtualization system; (230) Resource name server; (241) Request generation of a virtual machine; (242) Generate a virtual machine and allocate an IP address; (243) Private IP?; (244) Allocate an official IP mapped to the private IP; (245) Add a private/official IP address mapping entry to a NAT address conversion table; (246) Transmit virtual machine information; (247) Store an official IP mapped to the name of the virtual machine in a cache; (248) Register the address of the virtual machine; (249) Register the name and address of the virtual machine in a resource name DB
Abstract:
본발명은네트워크가중앙집중식컨트롤러에의해소프트웨어기반으로제어되는소프트웨어정의네트워크에서네트워크상의물리노드혹은가상노드의주소와물리주소간의대응관계를결정하는물리주소결정장치및 방법에관한것으로, SDN 기반의물리주소결정장치는주소대응부, 제어부를포함할수 있으며, 이를통해패킷포워딩에대한모든사항은컨트롤러에의해중앙집중식으로결정하여컨트롤러상에원하는기능을수행하는응용을프로그래밍하여탑재함으로써새로운네트워크서비스를손쉽게제공하는데그 목적이있다.