A multi-exit routing method

Abstract

The invention discloses a multi-exit route selection method. The path detection module is carried out according to each network exit server to realize the real-time detection of the destination address, and uploaded to the path management center. The optimal path to the destination address. The custom module of netfilter adopts the interval tree (intervaltree) search algorithm to quickly classify and mark the destination addresses of all data packets (designate the network exit), and at the same time dynamically match the user authority level according to the source address of the data packet, based on the user authority level and The identification code of the network egress server, specifying the corresponding available network egress. Then, policy routing implements routing exit selection based on fwmarkb packet identification. This method can adapt to the dynamic adjustment of multiple exits in the network, and realize high-precision dynamic automatic selection of multi-exit routes.

Description

technical field [0001] The invention relates to the technical field of IP, in particular to a multi-exit routing selection method. Background technique [0002] With the rapid development of the network, the network deployment of the global network has become the choice of more and more enterprises. Then, the interconnection of network nodes is different from that of operators. How to use the limited network egress nodes to achieve higher precision Routing selection has become a key issue. The traditional IP technology implements route selection for policy routing and detailed routing. If there are multiple egresses for the routing destination, routing with a smaller granularity can only be achieved through a large number of detailed routes. It is difficult to achieve precise control and dynamic management of routing. [0003] The traditional routing methods are basically based on the matching rules of the destination. The network forwarding server only matches the detaile...

AI Technical Summary

Problems solved by technology

It is difficult to achieve precise control and dynamic management routing

[0003] The traditional routing methods are basically based on the matching rules of the destination. The network forwarding server only matches the detailed routing through the destination address in the received IP packet. It is difficult to perform routing and forwarding according to the specific information specified by the user. Effective management according to different link costs and loads on different links

[0004] Select the fastest export path for the limited network export as the destination address. The existing technology is relatively more flexible. The iptables+geoip module matches the country area, but this matching only depends on the environment of the fixed network export. If the network export is added , or less, requires a lot of work to support this change, which makes the whole environment unstable

[0005] In short, it is difficult for the existing technology to achieve high-precision and dynamically adjusted routing when faced with multiple exits.

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