Domain name resolution method and system and DNS in IP network

A domain name resolution system and IP network technology, applied in the system and DNS server, domain name resolution field, can solve the problems of increased packet loss rate and delay jitter, reduced efficiency of domain name resolution, longer access routes, etc., to reduce the packet loss rate and delay jitter, improve QoS guarantee capabilities, and shorten the effect of access routes

Inactive Publication Date: 2011-04-20
CHINA MOBILE GRP BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The embodiment of the present invention provides a domain name resolution method and system in an IP network, which is used to solve the problem that an ISP with access resources of a certain website may access a website server accessed by another ISP by its access users, resulting in longer access routes , the problem of increased packet loss rate and delay jitter
[0015] E

Method used

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  • Domain name resolution method and system and DNS in IP network
  • Domain name resolution method and system and DNS in IP network
  • Domain name resolution method and system and DNS in IP network

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Embodiment 1

[0041] This embodiment is aimed at the ISP that has a certain website access resource in the prior art, and its access users may access the website server accessed by another ISP, resulting in longer access routes, increased packet loss rate and jitter delay. Provided is a method and system for domain name resolution in an IP network. The domain name resolution system will match several IP addresses corresponding to the domain name obtained through iterative query with the IP address segment of its own ISP, and only keep the IP address segment of the ISP. The IP address within the address range can ensure that for an ISP with a website access resource, the IP address corresponding to the website domain name received by its access users is the IP address of the website server accessed by the ISP.

[0042] First, the actual test data is taken as an example to illustrate the problems existing in the prior art. Please refer to Table 1, which specifically shows test data when an ac...

Embodiment 2

[0084] The embodiment of the present invention aims at the inconsistency between the ISP to which the DNS server that provides domain name resolution services for access users belongs and the ISP to which the access users belong (that is, the ISP that provides Internet access services for access users), which leads to a decrease in domain name resolution efficiency, and access To solve the problem of increased time delay, a domain name resolution method and DNS server in the IP network are provided. When receiving a domain name resolution request initiated by an access user, the IP address of the access user is matched with the IP address segment belonging to the ISP. , if it matches, perform normal domain name resolution for the access user, if not match, it means that the access user is from another ISP network, then only perform local query for the access user, for domain name resolution requests of non-local domain names, Denial of service.

[0085] The domain name resolut...

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Abstract

The invention discloses a domain name resolution method and a domain name resolution system in an Internet protocol (IP) network, which are used for solving the problems that: in an Internet service provider (ISP) provided with the access resource of a certain website, an access user of the ISP may access a website server accessed by another ISP, so that an access route is lengthened and packet loss and delay jitter are increased. The domain name resolution method in the IP network comprises the following steps that: when receiving a domain name resolution request carrying a website domain name initiated by the access user, the domain name resolution system queries an IP address which corresponds to the website domain name in a local domain name database and a cache; when the IP address which corresponds to the website domain name is not queried in the local domain name database and the cache, the domain name resolution system acquires a plurality of IP addresses which correspond to the website domain name through iterative query; and the domain name resolution system matches an IP address positioned in an IP address field of the ISP to which the domain name resolution system belongs in the plurality of acquired IP addresses and returns the IP address to the access user. The invention also provides the domain name resolution method and a domain name server (DNS) in the IP network.

Description

technical field [0001] The present invention relates to the field of IP (Internet Protocol, Internet Protocol) network, in particular to a domain name resolution method, system and DNS (Domain Name Service, domain name service) server in the IP network. Background technique [0002] In the IP (Internet Protocol, Internet Protocol) network, the main function of DNS (Domain Name Service, domain name service) is to convert the domain name (Domain Name) that is easy for people to remember and the IP address that the network can recognize. The conversion between domain name and IP address is called domain name resolution, and the network host that performs domain name resolution can be called DNS server. [0003] In the prior art, DNS provides three domain name resolution methods: local query, cache query and iterative query. If an access user of an ISP (Internet Service Provider, Internet Service Provider) enters a website domain name in a browser, the access user initiates a d...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06
Inventor 白爱军姜欣李东昌王文明曹秦峰杜建凤赵鑫盛凌志赵新宁李智伟赵伟
Owner CHINA MOBILE GRP BEIJING
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