Communication control method, computer system, and computer

    公开(公告)号:US12081514B2

    公开(公告)日:2024-09-03

    申请号:US17405062

    申请日:2021-08-18

    Applicant: Hitachi, Ltd.

    Inventor: Kyuta Suzuki

    Abstract: A computer system comprises cloud infrastructures including computers including a hypervisor manages a VM. The hypervisor includes a duplication correction virtual machine operating thereon, the duplication correction virtual machine controls communication of a duplication virtual machine to which a duplication MAC address assigned. Each of the cloud infrastructures includes a MAC address duplication monitoring module for monitoring duplication of the MAC address. The MAC address duplication monitoring module generates a translated MAC address in a case of detecting duplication of the MAC addresses; and transmits a duplication correction request including the translated MAC address to one of the computers on which the duplication virtual machine operates. The duplication correction virtual machine generates translation information in a case of receiving the duplication correction request, and controls communication between the duplication virtual machine and another virtual machine by using the translation information.

    Client controlled domain name service (DNS) resolution

    公开(公告)号:US12058099B1

    公开(公告)日:2024-08-06

    申请号:US18199595

    申请日:2023-05-19

    Applicant: VeriSign, Inc.

    CPC classification number: H04L61/4511 H04L61/10 H04L61/30

    Abstract: In one embodiment, a domain name system (DNS) server processes a DNS query based on a policy statement that is attached to the DNS query. Upon receiving the DNS query, the DNS server executes one or more commands specified in the policy statement to generate a query state. The query state controls DNS resolution behavior that the DNS server implements as part of processing the DNS query. The DNS server then performs one or more DNS resolution operations based on DNS query and the query state to generate a response. Advantageously, because the semantics of the policy statement are encapsulated within the policy statement, the policy statement enables a client to unambiguously control DNS resolution behavior. By contrast, conventional DNS resolution guidance mechanisms that rely on DNS servers to infer policies based on client data may not reflect the preferences of the clients.

Patent Agency Ranking