IP packet transmission method and system

Abstract

The invention discloses an IP message transmitting method and system, wherein an interface board on which an IP input interface is arranged packages an IP message and the interface information of the IP input interface into a first internal message, and transmits the first internal message to an IP layer processing module; the IP layer processing module, which analyzes the interface information of the IP input interface and the IP message, puts the analyzed results in a first data package structure and transmits the results to a transport layer processing module; the transport layer processing module determines transport layer connection according to the address of the IP message and the interface information of the IP input interface; whether the IP output interface stored by the transport layer connection is identical to the IP input interface is judged; if the judgment is NO, the transport layer processing module designates a new IP output interface, puts the interface information of the new IP output interface and the IP message in a second data package structure and transmits the interface information and the IP message to the IP layer processing module; the IP layer processing module packages the IP message and the interface information of the new IP output interface into a second internal message, and transmits the second internal message to the interface board on whicha new IP output interface is arranged; finally, the interface board on which a new IP output interface is arranged analyzes the interface information of the new IP output interface and the IP message, transmits the IP message.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to an IP message sending method and system. Background technique [0002] In the field of third generation mobile communication (3G) and data communication, Internet Protocol (Internet Protocol, IP for short) technology is widely used. With the rapid development of information technology, the traffic volume of communication is also expanding rapidly. In order to reliably and efficiently access large-flow IP data streams, multi-interface load sharing methods are commonly used in communication systems. That is, multiple Ethernet interfaces are in the active working state at the same time, multiple next-hop routes are configured, and certain methods are adopted to achieve load balancing of IP packets on these interfaces. [0003] Common load sharing strategies and algorithms include strategies based on source IP / destination IP addresses, strategies based on transport...

AI Technical Summary

Problems solved by technology

[0005] (1) The round-robin method of IP packets may easily cause confusion in the order in which protocol packets such as SCTP / TCP arrive at the peer end, affecting the sending and receiving efficiency of protocol processing such as SCTP / TCP

[0006] (2) If the external network route of a certain interface fails or is soft interrupted, but the routing entries in the system still exist, the round-robin sending of IP packets will cause a large number of packets to be lost in protocols such as SCTP / TCP ( If the load is shared by two interfaces, the packet loss will reach half), and the connection and business of protocols such as SCTP / TCP will be greatly affected

[0007] (3) No matter what kind of load sharing strategy and algorithm is adopted, as long as the inbound route to the system configured on the next-hop device does not completely match the outbound route of the system, the same SCTP coupling (or TCP connection) There will be inconsistencies between the outgoing interface and the incoming interface, which may cause problems such as switch broadcast storms, switching chip speed limit packet loss, etc., which will be unfavorable to SCTP coupling (or TCP connection)

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