Virtual Bridge Address Translation for Low-IP VM Access
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Solution Overview
Problem
Existing methods for accessing virtual machines result in excessive IP resource consumption and high access costs due to the need for direct IP connections through physical network interfaces and virtual switches.
Innovation Solution
A method and apparatus that utilize a virtual bridge interface and a virtual switch to translate destination address information, allowing access to virtual machines through a series of address translations, reducing the reliance on physical network interface cards and minimizing IP address usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an independent virtual IP is set in a physical network card as an entrance of DNAT and a virtual switch is used for accessing virtual machine, then virtual machine access is enabled, but IP resources are wasted and access cost increases
Solution Approach 1:
The patent introduces a virtual bridge interface as an intermediary component between the physical network card and the virtual switch. This virtual bridge interface acts as a mediator that receives access requests from the physical network card and forwards them to the virtual switch, enabling virtual machine access without requiring an independent virtual IP in the physical network card, thereby conserving IP resources
Solution Approach 2:
The patent segments the network access function into multiple components: the physical network card interface, the virtual bridge interface, and the virtual switch. By dividing the access path into these segments, each component can perform its specific function without requiring additional IP resources, as the virtual bridge interface handles the address translation and routing
2Ease of operation
If an independent virtual IP is set in a physical network card as an entrance of DNAT and a virtual switch is used for accessing virtual machine, then virtual machine access is enabled, but access cost increases
Solution Approach 1:
The virtual bridge interface serves as a cost-effective intermediary that eliminates the need for expensive independent virtual IP configurations in physical network cards. By using the virtual bridge interface for address translation and request routing, the system reduces access costs while maintaining virtual machine accessibility
Solution Approach 2:
The virtual bridge interface performs multiple functions including receiving access requests, translating destination addresses, and forwarding requests to the virtual switch. This multi-functionality eliminates the need for separate components, thereby reducing overall access costs while enabling virtual machine access
3Device complexity
If direct IP connection through physical network interface and virtual switch is used, then virtual machine access is straightforward, but IP resource consumption increases
Solution Approach 1:
The virtual bridge interface is introduced as a mediator in the access path between the physical network interface and the virtual switch. This intermediary component enables straightforward access by handling address translation and request routing without requiring additional IP resources, thus maintaining simplicity while conserving IP addresses
4Quantity of substance
If address translation through virtual bridge interface and virtual switch is implemented, then IP resource usage is reduced, but access process complexity increases
Solution Approach 1:
The virtual bridge interface acts as an intelligent intermediary that automates the address translation process. It receives requests with destination address information, translates the addresses according to configured rules, and forwards the translated requests to the virtual switch. This automation reduces manual configuration complexity while effectively reducing IP resource usage
Data Source
AI summary
The present disclosure provides a method for accessing a virtual machine: applying to a server, the server is deployed with a virtual switch, at least one virtual machine, a physical network interface card interface and a virtual bridge interface, receiving an initial access request through the virtual bridge interface; the initial access request includes first destination address information; translating the first destination address information to second destination address information to obtain a processed access request based on the virtual bridge interface; sending the processed access request to a port of a virtual switch according to the second destination address information based on the virtual bridge interface; translating the second destination address information to third destination address information to obtain a final access request based on the virtual switch; accessing the virtual machine indicated by the initial access request based on the third destination address information in the final access request.