Method, device and system for transmitting data

Abstract

The embodiment of the invention discloses a method, device and system for transmitting data. A specific embodiment of the system comprises the following steps: a load balancing gateway converts a virtual MAC address of a virtual server in a destination address of a data packet from a client into a real MAC address of a real server according to a pre-configured address mapping relationship betweenthe real server and the virtual server; the load balancing gateway sends the modified data packet to the virtual switch; the virtual switch determines a data packet flowing into the real server afterreceiving the data packet from the load balancing gateway, and converts a virtual IP and a virtual port of the virtual server in a destination address in the determined data packet into a real IP anda real port of the real server; and the virtual switch sends the modified data packet to a real server. According to the embodiment, the forwarding path between computing nodes of cloud computing is shortened, the system stability is improved, and the data forwarding delay is reduced.

Description

technical field [0001] The embodiments of the present disclosure relate to the field of computer technology, and in particular to a method, device and system for transmitting data. Background technique [0002] In the implementation process of public cloud load balancing products, in order to make source address information visible to users, the data plane relies on TTM (Tunnel Through module, tunnel traversal module). Through this module, the data packets carrying source address information NAT, but this module brings great obstacles to the stability of the public cloud and the network offload evolution of the computing node topology. [0003] Due to the working principle of BGW (load balance gate wall, load balancing gateway), the request from the client will involve address conversion in communication, and BGW encapsulates these address and port information into TCP / IP Option (option), so that The TTM module is installed. This module will store and convert the IP and por...

AI Technical Summary

Problems solved by technology

[0004] Although the above technical solution solves some problems of the data plane in the use of load balancing products, there are also many stability risks in use, and because it is part of the integration into the kernel state, it hinders the evolution of the topology

[0005] First of all, with the increase in the demand for high-performance virtual machines, the evolution route of the overall computing node network topology will gradually remove the network bridge and use OVS (OpenvSwitch, open virtual switch). The TTM module requires traffic to pass through the kernel state, which hinders the overall physical topology. The evolution process is in conflict with the overall scheme of kernel bypass (kernel bypass)

[0006] Secondly, TTM relies on a custom TCP / IP option, which is easily exploited by external attacks and introduces security risks; at the same time, TTM will also affect the maximum transmission unit of the virtual network

[0007] Finally, TTM will destroy the integrity of the existing kernel, not only reduce the performance of the kernel, but also cause the abnormality of the entire computing node in the event of a failure, which is extremely harmful

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