Position detection method and device for CDN

Abstract

The invention provides a position detection method and a device for a CDN (Content Delivery Network). The method comprises the following steps of allowing users to access network resources in the CDN, acquiring an IP (Internet Protocol) address of each user, and an IP address of a local DNS (Domain Name Server), establishing correspondence between a first user IP address group and the IP address of the first local DNS, and judging an operator corresponding to the IP address of the first local DNS according to the user IP addresses in the first user IP address group. According to the method, when the users access the network resources in the CDN, IP information of the users and the corresponding local DNSs can be acquired, and the operator attributes corresponding to the IP addresses of the local DNSs can be verified, judged and corrected according to the acquired information, so that the location and dispatching accuracy is improved greatly, the user access is more accurate, and better service quality is provided for the users.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a method and device for detecting a location of a CDN. Background technique [0002] The CDN GSLB (Gobal Server Load Balance) system based on the local DNS (Domain Name System, Domain Name System) positioning is a DNS system that supports intelligent resolution. In the process of resolving the domain name of the service, the IP address of the user's local DNS is used for positioning , and then resolve the expected IP address, so as to achieve the purpose of intelligent resolution and further load distribution. In the whole process, due to poor interoperability across operators, the accuracy of the IP database used for positioning directly determines the quality of user access. [0003] According to the prior art, the IP distribution information provided by RIR (Regional Internet Registry, Internet registration agency) sites such as ARPNIC is used to sort out the IP database...

AI Technical Summary

Problems solved by technology

[0004] The problem with existing technologies is that, on the one hand, the information on the allocation and use of IP segments published on the RIR site is not completely accurate, because the actual use of IP segments may change with the cooperation between ISP operators and other behaviors, such as RIR organizations The network segment IP-A is allocated to ISP-A, and ISP-A cooperates with ISP-B to transfer the right to use the network segment IP-A to ISP-B, but the information on the RIR site is still the statement network Segment IP-A belongs to ISP-A, so all the local DNS whose egress IP address belongs to network segment IP-A is considered as the local DNS of ISP-A, and all users who access the Internet through these local DNS are also considered as Users accessed by the ISP-A operator, according to the common distribution strategy in CDN, generally guide these users to the same operator node, which is considered to be the user group of ISP-A (that is, there may be errors in IP positioning, the system The user who thinks it is ISP-A may actually belong to ISP-B) When accessing the service, the domain name is resolved to a service node of ISP-A. The cross-operator interoperability is not good, resulting in poor access quality, so in most cases will lead to poor access quality for these users

Therefore, it will cause the same problem as above, and the access quality of users who use the wrong local DNS will also deteriorate

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