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Method and device for creating message table entry as well as method and device for forwarding multicast data stream

A data flow and message technology, applied in the field of Ethernet multicast, can solve the problems of increasing the processing burden of user switches without on-demand, wasting bandwidth resources, etc.

Active Publication Date: 2014-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] From the above two examples, it can be seen that users or switches without VOD will still receive data streams forwarded by other switches, which not only wastes a lot of bandwidth resources, but also increases the bandwidth of users without VOD and / or switches without VOD. processing burden

Method used

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  • Method and device for creating message table entry as well as method and device for forwarding multicast data stream
  • Method and device for creating message table entry as well as method and device for forwarding multicast data stream
  • Method and device for creating message table entry as well as method and device for forwarding multicast data stream

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Embodiment Construction

[0063] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0064] see image 3 , propose an embodiment of the message entry creation method of the present invention, which includes:

[0065] Step S101, judging that the received protocol message is a hello message or a pruning message;

[0066] Step S102, when the protocol message is a hello message, create a corresponding hello message entry;

[0067] Step S103, when the protocol packet is a pruning packet, create a corresponding pruning packet entry.

[0068] Further, in the above embodiment, the hello message entry records include: the device sending the hello message, the real port receiving the hello message, the vlan where the real port receiving the hello message is located, and the hello aging time value.

[0069] The entry record of the clipping message includes: the device sending the clipping message, the real po...

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Abstract

The invention discloses a method and device for creating a message entry, and a method and device for forwarding a multicast data stream. The method for forwarding a multicast data stream is as follows: search for and record hello message entries of the same vlan, record pruning types and the described The pruning message table item of vlan; In described hello message table item, look for the real port inconsistent with the real port in described pruning message table item; Multicast data flow is described in hello message table item The actual port is forwarded. The multicast data stream forwarding method of the present invention finds out the real port that needs to forward the multicast data stream in the device by comparing the created hello message table item and the pruning message table item, and transfers the multicast data stream from The forwarding of the real port effectively prevents the multicast data flow from being forwarded to neighboring devices that do not need the multicast data flow, and saves network data transmission resources.

Description

technical field [0001] The present invention relates to the field of Ethernet multicast technology, in particular to a method and device for creating message table items, and a method and device for forwarding multicast data streams. Background technique [0002] Dense Mode Protocol Independent Multicast (PIM-DM, Protocol Independent Multicast DenseMode) is an intra-domain multicast routing protocol, the protocol only has the shortest path tree (SPT, ShortestPathTree), which adopts the "diffusion-pruning" method for multicast data flow Forward. [0003] In a PIM-DM multicast domain, switches running the PIM-DM protocol periodically send Hello packets for neighbor discovery and Designated Router (DR, DesignatedRouter) election. [0004] The following combines a basic example to introduce the unique "diffusion-pruning" mechanism of PIM-DM. [0005] like figure 1 As shown in the figure, suppose that two Layer 3 switches A and B both enable the PIM-DM function; among them, po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L12/18H04L45/74
Inventor 赵艳杰
Owner ZTE CORP