Implementation method of symmetry of multi-line access flow rate of data center, device and system

Abstract

The invention discloses an implementation method of symmetry of multi-line access flow rate of a data center, comprising the following steps: a router forwards a session which is from a terminal and is sent by a second ISP; the router establishes a second reverse session information of the session, the second reverse session information indicates an entrance interface of the session as an exit interface of the reverse session; and the router receives the response sent by a data server, and forwards the response to the terminal by the exit interface in the second reverse session information. The invention can fully utilize multiple exits of a data center network to effectively improve service quality to outside, simultaneously guarantee the symmetry of flow rate and does not occur the conditions of packet loss and interruption.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a method, device and system for realizing symmetric multi-line access traffic in a data center. Background technique [0002] my country's ISP (Internet Service Provider, Internet Service Provider) mainly includes China Netcom, China Telecom, China Unicom, China Railcom, four major telecommunications companies, and users communicate with the Internet through the networks provided by these operators. These telcos operate independently, with each telco connecting to internet servers through its own network, which are not connected to each other. When a user connects to the Internet through a telecommunications company's network, the user is bound by the telecommunications company, and the user cannot switch to another operator's network to access the Internet. This phenomenon has caused the entire Internet in China to be in a situation where it cannot be intercon...

AI Technical Summary

Problems solved by technology

However, the original forwarding router based on policy routing or static routing, when returning a response message to the user, will forward the response message to the line of Netcom (ISP1), such as the dotted line path, because the user is accessing the server through ISP2, The source address of the server in the response message should also be a telecommunications address corresponding to the address range of ISP2. After the telecommunications address is returned to ISP1, it is filtered out by ISP1 (the operator deploys source address checking), which leads to business failure and loss. Package phenomenon

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