Multicast service agent implementing method and system and node discovering method

A service proxy, multicast technology, applied in the field of Internet communication, can solve the problems of low accuracy of prefix list, low efficiency of IP address generation, low efficiency of unique interface identifier, etc.

Inactive Publication Date: 2008-03-12
JIANGSU HENGYUAN METAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 1. The efficiency of generating IP addresses is low: due to the high repetition of user names and the repeated address detection after each interface identifier is generated, the efficiency of generating unique interface identifiers is very low;...

Method used

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  • Multicast service agent implementing method and system and node discovering method
  • Multicast service agent implementing method and system and node discovering method
  • Multicast service agent implementing method and system and node discovering method

Examples

Experimental program
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Embodiment 2

[0132] As shown in FIG. 5 , in this embodiment, the difference from Embodiment 1 of the node discovery method is that the response mode of the destination node B included in the node discovery request message of node A is an indirect response mode, so node B uses a single Send the indirect response message to the MSA in broadcast mode b , by MSA b Send a proxy response message to node A in unicast mode;

[0133] The rest of the process is the same as the first embodiment of the node discovery method, and will not be described again here.

Embodiment 3

[0135] As shown in Figure 6, node A wants to notify all nodes in the multicast group of its own information, and the specific implementation process is as follows:

[0136] Node A obtains the multicast address according to the method described in Embodiment 1 of the node discovery method, and node A joins the MSA a After the multicast group, the router will periodically receive messages from the MSA a The MSA announcement message sent to node A, node A unicasts to the MSA through the unicast address obtained when listening on the UDP port a Send Release Information Request, MSA a Send the release information request to MSA in multicast mode a All nodes in the multicast group, including node B and node C, at this time, the message format sent by MSA multicast can be changed, without affecting the implementation of the present invention;

[0137] At this point, all nodes in the multicast group receive the advertised information.

[0138] Example 4 of Node Discovery Method

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Abstract

The present invention provides an implement method of a multicast service agent and an implement system, and provides a node finding method realized by using the multicast service agent. The present invention provides an agent mechanism for a node using the multicast service agent, to ensure that the node to send the multicast information only requires the application agent of the multicast service agent, and requires not to construct a multicast group taking the node as a root, the application scope of the present invention comprises a service finding and a broadcasting notice, etc.; the node finding method provided by the present invention realizes the node finding in a local station scope; simultaneously, the node finding method can get the destination node information accurately and efficiently or send the information to a destination node.

Description

technical field [0001] The invention relates to the technical field of Internet communication, in particular to a method and system for realizing a multicast service agent and a method for discovering nodes. Background technique [0002] The so-called node discovery refers to a process in which a node obtains information of one or more nodes through some means, or a node actively notifies other one or more nodes of its own information. Domain name resolution in the Internet can be regarded as a special case of node discovery. [0003] In the Internet, if node A needs to communicate with node B, node A must first query the domain name system for the IP address of node B. Only when node A knows the IP address of node B can node A communicate with node B. However, when there is no domain name system service in the Internet or the domain name system fails, how to realize node discovery, there are two main implementation schemes in the prior art: [0004] prior art 1 [0005] ...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06H04L12/56H04L45/16
Inventor 管红光
Owner JIANGSU HENGYUAN METAL MATERIALS
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