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Method and device of domain name resolution

A domain name resolution and domain name resolution request technology, applied in the field of domain name resolution, can solve the problems that the terminal cannot obtain the optimal IP address, cannot access the optimal site, etc.

Active Publication Date: 2012-10-17
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The above-mentioned domain name resolution process relies on GSLB to select the best IP address from multiple IP addresses. However, in the prior art, most ICPs do not have GSLB, resulting in the terminal being unable to obtain the optimal IP address and unable to access the optimal site.

Method used

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  • Method and device of domain name resolution

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] This embodiment provides a method for domain name resolution, which is applied to such as figure 1 The network system shown includes a user terminal, a local DNS server, an IDC management center in the network, each IDC, and a network-side DNS server.

[0043] For the convenience of description, the following DNS server on the network side uses an ICP authorized DNS server as an example.

[0044] The specific process of this method is as figure 2 shown, including:

[0045] Step 201, the local DNS server receives the request initiated by the user, and directly feeds back if there is a corresponding message in the local cache and database; otherwise, it will request the ICP authorizing DNS server in a recursive manner.

[0046] Step 202, the local DNS server receives the full IP address list sent by the ICP authorized DNS server.

[0047] Step 203, the local DNS server judges whether the list of all IP addresses contains IP addresses in the network, and if not, direct...

Embodiment 2

[0056] This embodiment provides a method for domain name resolution, which is applied to such as figure 1 The network system shown includes a user terminal, a local DNS server, a network-side DNS server, an in-network IDC management center, and each IDC. For the convenience of description, the following DNS server on the network side uses an ICP authorized DNS server as an example.

[0057] The specific process of this method is as Figure 4 shown, including:

[0058] Step 401, the local DNS server receives the request initiated by the user, and directly feeds back if there is a corresponding message in the local cache and database; otherwise, it will request the ICP authorizing DNS server in a recursive manner.

[0059] Step 402, the local DNS server receives the full IP address list sent by the ICP authorized DNS server.

[0060] In step 403, the local DNS server judges whether the list of all IP addresses contains addresses in the network, and if not, directly feeds back...

Embodiment 3

[0071] This embodiment provides a DNS server, such as Figure 5 shown, including:

[0072] A sending unit 11, configured to send a domain name resolution request to a DNS server on the network side;

[0073] A receiving unit 12, configured to receive the full IP address list sent by the DNS server on the network side;

[0074] The first screening unit 13 is configured to select an IP address in the network from the list of all IP addresses;

[0075] The query unit 14 is used to query the IP address list received from the Internet data center IDC management center according to the IP address in the network, and obtain the capability information of the IP address in the network;

[0076] The second screening unit 15 is configured to select the IP address in the network according to the capability information of the IP address in the network.

[0077] The query unit 14 is also used for:

[0078] Searching for the in-network IP address in the IP address list, and obtaining cap...

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Abstract

The invention discloses a method and a device of domain name resolution. The method comprises that a local domain name resolution service DNS server sends a domain resolution request to a network side DNS server, and receives a whole list of IP addresses which is transmitted by the network side DNS server; that the local DNS server selects in-network IP addresses from the whole list of IP addresses; that the local DNS server, according to the in-network IP addresses, inquiries an IP address list which is received from a management center of the Internet data center IDC, and acquires capability information of the in-network IP addresses; and that the local DNS server selects an in-network IP address according to the capability information of the in-network IP addresses. In embodiments of the invention, the local DNS server receives the whole list of IP addresses from the network side DNS server, and sends the in-network IP addresses which are selected from the list to a subscriber terminal, so that the subscriber terminal can visit an optimal site.

Description

technical field [0001] The invention relates to the communication field, in particular to a domain name resolution method and device. 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 is called DNS server. [0003] In the prior art, DNS provides three domain name resolution methods: local query, cache query and iterative query. Specifically, if an access user of a certain ISP (Internet Service Provider, Internet Service Provider) inputs a certain website domain name in a browser, the access user initiates a domain name resolution request, which carries the website domain name; the DNS server of the ISP...

Claims

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Application Information

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IPC IPC(8): H04L29/12
Inventor 李晨李连源张娟
Owner CHINA MOBILE COMM GRP CO LTD
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