Packet transmission method based on network dual exit and exit router

Abstract

The invention provides a message transmission method based on double output-ports of the network and output-port routers, which are applied in a data centre network containing two output-port routers, and a connection is established between the two outlet-port routers; after receiving a request message from the (ISP) network side of a service supplier, each output-port router merely conducts the displacement of destination address, and creates a conversation information containing the source address of the request message and the destination address after the displacement, and then sends the request message; after receiving the message from the network side of the data center, by judging whether the self creates the conversation information containing the source address of the message and the destination address, if yes, the output-port router replaces the source address of the message by a public network address of the output-port routers and then transmits the public network address to the ISP gateway of the next hop; otherwise, the output-port router transmits the message to the other output-port router connected with the output-port router. The invention is favorable for realizing safety precautions of the servers in the data center network and improving the security of the data center network.

Description

technical field [0001] The invention relates to network communication technology, in particular to a message transmission method and an egress router based on network dual egress. Background technique [0002] As the number of users of Internet application services continues to increase, the resulting large number of accesses has brought a heavy burden to the data center network, especially for the egress router in the data center network, its forwarding performance and egress bandwidth are facing great challenges . On the other hand, in order to improve the reliability of the data center, the design of the data center network is often required to have extremely high redundancy, so that when a node or link in the data center network fails, it can quickly switch to the redundant node Or on the link, thereby reducing the time of service interruption and improving the reliability of the data center. [0003] Network dual egress is currently the most commonly used solution to ...

AI Technical Summary

Problems solved by technology

In the above method of the prior art, the source address of the request message is replaced at the egress router, the server in the data center network cannot obtain the address information of the external client that sent the request message, so it is impossible to realize the data The security protection measures for servers in the central network will bring security risks to the data center network

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