Network device internal node reliable multicast method, system and device

A technology of internal nodes and network equipment, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of unfavorable network equipment node expansion, inability to adapt to a large number of equipment nodes, and inability to realize reliable multicast, etc., to achieve enhanced system Reliability and completeness of information processing, improvement of scalability, and effect of relieving processing pressure

Inactive Publication Date: 2007-08-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, similar to the technical solution in which the above-mentioned multicast mode is a collection of multi-node unicast modes, this solution obviously cannot adapt to the situation of a large number of device nodes, and is not conducive

Method used

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  • Network device internal node reliable multicast method, system and device
  • Network device internal node reliable multicast method, system and device
  • Network device internal node reliable multicast method, system and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1. Firstly, reliable multicast among several routers is taken as an example for description. With reference to accompanying drawing 1, accompanying drawing 3 and 4, Fig. 1 is the reliable multicast flow chart of this embodiment, Fig. 3 is the reliable multicast sending and receiving schematic diagram in this embodiment, Fig. 4 is the data confirmation in this embodiment schematic diagram.

[0041] Step 11: Determine the MN used to manage the DN, and the DN joins a multicast group with the SN as the data source node through the MN;

[0042] In the scenario where the main control board of a router serves as the SN to send data, and the service boards of other routers serve as the DN to receive multicast data, the main control device in the chassis where these service boards are located can be used as the MN to perform Management, SN, DN, and MN are shown as 31, 32, and 33 in Figure 3 and Figure 4, respectively.

[0043] Each multicast group has a unique multi...

Embodiment 2

[0052] Embodiment 2. In order to enhance the reliability of data transmission, the above embodiment is further optimized. Specifically, after step 14 of the above embodiment 1, the following method is adopted:

[0053] If the SN does not receive the unified acknowledgment information from all MNs within the preset time, it considers that some DNs have not received the data segment, and retransmits the data segment in a multicast manner.

[0054] After retransmission, if the SN receives unified confirmation information from all MNs within the preset time, it means that the retransmission is successful. If the unified acknowledgment information of all MNs has not been received within the preset time, the retransmission may continue.

[0055] Considering the impact of retransmission on transmission efficiency, the number of retransmissions can be preset. If the preset number of retransmissions is reached, the SN still cannot receive unified confirmation information from all MNs w...

Embodiment 3

[0056] Embodiment 3: During the multicast data transmission process, if a new node requests to join the multicast group as a DN to receive multicast data, the following method can be adopted, referring to the flow chart shown in FIG. 2 .

[0057] Step 21: When the SN receives a request from a new node to join the multicast group during the process of sending multicast data, it notifies the DN and the MN to which it belongs of the serial number of the current data segment to be sent;

[0058] In the process of sending multicast data, when the SN receives a request from a new node to join the multicast group sent by the MN corresponding to the node, it will notify the MN to which the DN belongs of the sequence number of the current data segment, and the MN will The SN notifies the DN of the sequence number of the data segment currently sent by the SN, and then uses the sequence number as the starting sequence number for confirmation by the SN and the MN to which the node belongs....

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Abstract

The multicast method adopted for the equipment and system provided in instance of the invention is as following: data are divided into data slots at source node SN, each data slot is packaged and identified, which is sent to all destination nodes DN directly through multicast mode; after receiving data slots, DN replies acknowledge information with ID of data slot to middle node MN; when finding that all affiliated DN reply acknowledge information, MN sends uniform acknowledge information with ID of data slots to SN. Under large numbers of inner nodes of network device, hierarchical acknowledge meets requirement of data multicast so as to raise expandability of node of whole network device.

Description

technical field [0001] The invention relates to the field of multicast technology, in particular to a method, system and device for reliable multicast of internal nodes of network equipment. Background technique [0002] With the continuous expansion of the global network and the continuous enrichment of services, the requirements for the functions and performance of network equipment are also continuously improved. The nodes in the network equipment need to exchange data frequently for better control and management. This data exchange can be divided into point-to-point unicast mode and point-to-multipoint multicast mode in terms of transmission form. The efficiency, performance and reliability of data transmission of internal nodes of network equipment are relatively important indicators in the application of network equipment. However, it is difficult to achieve the optimum of these indicators at the same time. For example, when the network bandwidth utilization efficienc...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L12/56H04L1/18H04L1/16H04L29/06H04L45/16
Inventor 吴小前孙达志宋超峰
Owner HUAWEI TECH CO LTD
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