Method for acquiring physical address of virtual machine

摘要

A method for acquiring a physical address of a virtual machine includes acquiring, by a first switching endpoint, an address list of N switching endpoints from a centralized controller after receiving an address acquisition request sent by a first virtual machine, where the N switching endpoints include a second switching endpoint, sending, in a unicast manner according to the address list, the request to the N switching endpoints that include the second switching endpoint, and after receiving a second response sent by the second switching endpoint, sending the second response to the first virtual machine. The method may avoid the limitation on the quantity of created switching endpoints caused by the insufficient quantity of multicast groups of the switch in order to increase the quantity of created switching endpoints.

主权项

1. A method for acquiring a physical address of a virtual machine, wherein the method is used for a first virtual machine to acquire a physical address of a second virtual machine and comprises:
receiving, by a first switching endpoint to which the first virtual machine belongs, an address acquisition request sent by the first virtual machine, wherein the address acquisition request comprises an Internet Protocol (IP) address of the second virtual machine; sending, by the first switching endpoint, the address acquisition request to a centralized controller of a virtual local area network, wherein the address acquisition request carries an identifier of the virtual local area network in which the first virtual machine is located; receiving, by the first switching endpoint, a first response sent by the centralized controller in response to the address acquisition request, wherein the first response comprises an address list of N switching endpoints that comprise a second switching endpoint, wherein N is a positive integer, and wherein the N switching endpoints are switching endpoints that belong to the virtual local area network; sending, by the first switching endpoint in a unicast manner according to the first response, the address acquisition request separately to the N switching endpoints that comprise the second switching endpoint; receiving, by the first switching endpoint, a second response in response to the address acquisition request, wherein the second response is sent by the second switching endpoint to which the second virtual machine belongs, and wherein the second response comprises the physical address of the second virtual machine; and sending, by the first switching endpoint, the second response to the first virtual machine.