Patent ID: 11863520
Assignee: ALIBABA GROUP HOLDING LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A data access apparatus, wherein the apparatus comprises:
a first receiving module configured to receive an address assignment request sent by an instance control service based on a first instance;
an assignment module configured to assign an address segment to the first instance, based on user information and a corresponding connection relationship between a switch and the first instance defined by a user;
a building module configured to build an access control list based on the address segment assigned to the first instance, wherein the access control list is used for controlling access between different first instances defined by the user;
a first sending module configured to send the access control list to a switch control service, such that the switch control service configures the access control list for the switch;
a first returning module configured to return, to the instance control service, the address segment assigned by the assignment module for the first instance, such that the instance control service starts the first instance;
a second receiving module configured to receive a multicast packet carrying information about a network port of a second instance that is sent by the second instance through the network port;
a second sending module configured to send a query request to a machine deployment control service based on the information about the network port that is carried in the multicast packet, to query for deployment information of the second instance; and
a determining module configured to receive the deployment information returned by the machine deployment control service based on the query request, and determine a corresponding connection relationship between the second instance and the switch based on the deployment information.