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Overlay multicast zone file transmission method and system

A file transfer and zone file technology, applied in the field of network information transmission, can solve the problems of flexible change, affecting the quality of DNS resolution service and timely updating of domain name data, without considering the link transmission capacity, etc., to improve the transmission speed and save money. The effect of investing and saving money

Active Publication Date: 2016-08-31
CHINA INTERNET NETWORK INFORMATION CENTER
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Problems solved by technology

[0004] The existing zone file transmission mechanisms are all artificially designated transmission modes based on subjective judgments without considering factors such as link transmission capabilities and dynamic changes in network conditions.
Moreover, this mode cannot be flexibly changed with changes in environmental conditions, and the transmission efficiency cannot be optimally adaptable, which in turn affects the quality of DNS resolution services and the timely update of domain name data

Method used

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  • Overlay multicast zone file transmission method and system
  • Overlay multicast zone file transmission method and system
  • Overlay multicast zone file transmission method and system

Examples

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Embodiment Construction

[0042] These examples are merely illustrative, and it cannot be assumed that the specific embodiment of the present invention is limited to the description of these examples. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction and transformation can also be made, which should be regarded as belonging to the protection scope of the present invention. Alternative methods are as follows:

[0043] (1) In addition to algorithms such as the shortest path, minimum spanning tree, and low-cost shortest path tree mentioned above, other algorithms can also be used as the construction method of the multicast tree;

[0044] (2) In addition to the maximum TCP throughput of the link as the link cost, other indicators can also be used as the link cost;

[0045](3) In addition to using the above routing algorithm (referred to as a centralized routing algorithm), a distributed routing al...

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Abstract

The invention discloses a district file transmission method and system covering multicast. All authoritative servers serving the same district form an overlay network, and a new district file transmission system is obtained by increasing the forwarding function of district files on each server. The system It can realize the function of multicast transmission of zone files from the master server to other slave servers. The transmission method of the overlay multicast zone file of the present invention is: the direct transmission between the original DNS primary server and the DNS secondary server becomes the indirect transmission with the DNS secondary server as the relay node; a forwarding scheduling server is added to collect The link information between each authoritative server is calculated to obtain a multicast tree through a certain multicast tree generation algorithm, and the respective forwarding tables are also calculated for each authoritative server. Because the method of the present invention utilizes the link between the secondary servers for data transmission, the zone file transmission is accelerated. Simultaneously, the present invention can save funds, and is convenient for realization and popularization.

Description

technical field [0001] The invention relates to a file transfer method, in particular to an area file transfer method covering multicast for transfer, and belongs to the field of network information transfer. Background technique [0002] As an important infrastructure of the Internet, the Domain Name System (DNS) has always provided key basic services for the operation of the global Internet. In the DNS system, resolution data exists in the form of zone files. There are many authoritative servers serving the same zone, and these servers form an authoritative server group. One of the authoritative servers is the primary server, and the other servers are secondary servers. Currently, primary and secondary servers transmit data in a layered transport mechanism such as figure 1 As shown, some DNS secondary servers periodically obtain zone files from the DNS primary server, and other DNS servers obtain zone files from the former. [0003] Based on security and service qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08H04L12/761H04L12/721H04L45/16
Inventor 刘明星何峥李强
Owner CHINA INTERNET NETWORK INFORMATION CENTER
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