Method, system and SAG (service access gateway) equipment for analyzing DNS (domain name system)

A parsing method and DNS server technology, applied in the field of SAG equipment and DNS parsing, can solve the problems of increasing the complexity of operator network control and adjustment, and achieve the effects of improving utilization efficiency, improving accuracy, and optimizing traffic

Active Publication Date: 2012-01-11
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is relatively simple to implement, but requires the operator to perform special configurations for each group of such application servers on the router.

Method used

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  • Method, system and SAG (service access gateway) equipment for analyzing DNS (domain name system)
  • Method, system and SAG (service access gateway) equipment for analyzing DNS (domain name system)
  • Method, system and SAG (service access gateway) equipment for analyzing DNS (domain name system)

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Embodiment Construction

[0034] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0035] figure 1 A flowchart showing an embodiment of the DNS resolution method of the present invention.

[0036] Such as figure 1 As shown, in step 102, the DNS server obtains the IP address list of the application server, and sends the client's IP address and the IP address list of the application server to the SAG device.

[0037] In step 104, the SAG device sorts the IP address list of the application server according to the topology information and load information of the IP network, and returns the optimal IP address of the application server to the DNS server. The topology information of the IP network includes, for example, the proximity relationship between devices in the network, and the load information includes, for example, the load status of servers, the congestion status of links i...

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PUM

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Abstract

The invention discloses a method, a system and SAG (service access gateway) equipment for analyzing a DNS (domain name system). The method comprises the following steps: a DNS server obtains an IP (internet protocol) address list of an application server and sends a client IP address and the IP address list of the application server to the SAG equipment; the SAG equipment sequences the IP address list of the application server according to the topological information and the load information of an IP network and returns an optimal IP address of the application server to the DNS server; and the DNS server returns the optimal IP address of the application server to a client. According to the technical scheme, by utilizing the topological information and the dynamic information of a network, the precision of analyzing the DNS is promoted in a targeted way, so as to optimize the flow between the Client and the Server; by utilizing a uniform strategy, the servers which are deployed between the networks and in the networks are selected preferentially; a router in the network of an operator is not necessary to be configured specially; and the subsequent configuration and maintenance are favorable.

Description

technical field [0001] The present invention relates to DNS (Domain Name System, domain name system) technology, in particular to a DNS resolution method, system and SAG (Service Access Gateway, service access gateway) equipment. Background technique [0002] In the DNS query analysis process in the existing network, if an application has multiple application servers, and each application server has a different IP (Internet Protocol, the protocol for interconnection between networks) address, the system will generally follow the round robin Or select an IP address of an application server in a random manner, and return it to the DNS client, and then the client uses this address as the target address to access related applications. [0003] One problem with this approach is that the returned application server address does not take into account the location of the client. In this way, the address returned to a client may be the IP address of the application server far away f...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06
Inventor 王爱俊杨锋李凯周开宇王茜陈运清赵慧玲冯明
Owner CHINA TELECOM CORP LTD
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