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PIM-SM source registration optimization method

A PIM-SM, 1. PIM-SM technology, applied in the field of PIM-SM source registration optimization, can solve the problem of reducing the processing burden, etc., to achieve the effect of alleviating the processing burden, reducing the time of continuous sending, and reducing a large number of packet loss

Active Publication Date: 2021-10-08
芯河半导体科技(无锡)有限公司
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AI Technical Summary

Problems solved by technology

It is impossible to forward multicast data as much as possible while reducing its processing burden, thereby improving the multicast forwarding performance of the entire system

Method used

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  • PIM-SM source registration optimization method
  • PIM-SM source registration optimization method

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Embodiment Construction

[0072] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0073] In this embodiment, a temporary multicast forwarding path tree is quickly created by monitoring and utilizing the unicast registration message forwarding path, so that the original multicast data can be forwarded through the forwarding tree as early as possible, and the processing of the original message can be reduced as early as possible. Registration encapsulation and forwarding; the temporary multicast forwarding tree is created according to the forwarding of the registration message, which is called the registration forwarding tree.

[0074] 1. The process of creating a registration forwarding tree is as follows:

[0075] Such as Figure 5 As shown, when the S-DR receives the multicast data from the multicast source, there is no multicast forwarding entry at this time, the multicast data is sent to the protocol layer for registration a...

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Abstract

The invention discloses a PIM-SM source registration optimization method, which comprises the following steps that: when an S-DR receives multicast data from a multicast source, no multicast forwarding table item exists at the moment, and the multicast data is uploaded to a protocol layer for registration packaging and is sent to an RP in a unicast manner; when the S-DR sends a registration message, a sending port is monitored, a temporary forwarding table entry T (S, G) is created, and a forwarding port is a registration message sending port; and the middle router monitors the forwarding of the registration message and also creates a temporary forwarding table entry T (S, G), and a forwarding port is a forwarding port of the registration message. According to the method, the registration multicast tree is created quickly and efficiently, the time for continuously sending the registration message is shortened, and the registration processing burden of the S-DR is relieved; and the registration messages from each S-DR are reduced, so that the processing burden of the RP is greatly relieved, and the performance bottleneck point of the whole multicast system is optimized.

Description

technical field [0001] The invention relates to the technical field of multicast routing, in particular to a PIM-SM source registration optimization method. Background technique [0002] PIM-SM is a multicast routing technology commonly used in large-scale networks. It performs on-demand forwarding of multicast data according to the requirements of the multicast receiving end. According to the protocol standard, the establishment of PIM-SM multicast forwarding path is divided into the following three main stages: [0003] Phase 1: Creation of RPT. It is used to create a shared forwarding tree RPT from the multicast rendezvous point RP to the receiver. [0004] Such as figure 1 As shown, S-DR is the multicast designated router on the multicast source side, and R-DR1 and R-DR2 are multicast designated routers on the receiving end side. Receiver 1 and receiver 2 apply to the designated routers R-DR1 and R-DR2 to join a specific multicast group through the IGMP protocol, tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/707H04L45/24
CPCH04L45/24Y02D30/50
Inventor 蒲涛
Owner 芯河半导体科技(无锡)有限公司
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