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Method and system for realizing Anycast-RP mechanism

A technology of anycast rendezvous point and rendezvous point, applied in the field of realizing anycast rendezvous point mechanism, it can solve the problems of slow convergence of multicast routing, poor RP reliability, network bottleneck, etc., and achieve the effect of fast convergence of load sharing

Inactive Publication Date: 2010-08-18
ZTE CORP
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Problems solved by technology

[0005] In the standard PIM-SM, each multicast group can only be mapped to a unique active RP, which brings the following defects: 1. Control packets and data packets must pass through the RP, which not only increases the burden on the RP, It also forms a network bottleneck; 2. After the active RP fails, RP election needs to be re-initiated, and the registration and joining process is re-initiated, resulting in slow convergence of multicast routing; the active RP is the RP that is finally elected among multiple RPs; 3. A single RP is less reliable
[0014] In the method for realizing the Anycast-RP mechanism in the above-mentioned prior art, it is necessary to run MSDP on all Anycast-RP member nodes, so it is necessary to maintain a large number of MSDP peers between the Anycast-RP member nodes; because MSDP peers and multiple Two PIM-SM domains are connected to discover multicast source information in other PIM-SM domains, so there is interaction between the PIM-SM domain and multiple MSDP peers, which increases the complexity of the Anycast-RP mechanism

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  • Method and system for realizing Anycast-RP mechanism

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Embodiment Construction

[0045] The present invention proposes a method and system for realizing anycast convergence point mechanism in the PIM-SM domain. The basic idea of ​​the present invention is: the multicast source sends the multicast flow to the SDR, and the SDR sends the encapsulated registration message to the RP; the RP joins the multicast The SPT in the source direction establishes the SPT from the multicast source to the multicast receiver; the RPT is switched to the SPT, and the SDR sends the multicast stream to the UDR through the SPT.

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] figure 2 It is a schematic flow diagram of the method for realizing anycast convergence point mechanism in the present invention, such as figure 2 As shown, the method includes the following steps:

[0048] Step 201, configure RPA and RPCA on each Anycast-RP member;

[0049] Specifically, the same RPA...

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Abstract

The invention discloses a method for realizing an Anycast-RP mechanism. The method comprises that a multicast source sends a multicast stream to an SDR; the SDR sends a packaged registration message to an RP; the RP is added with an SPT in the multicast source direction and establishes the SPT from the multicast source to a multicast receiver; the RPT is switched to the SPT and the SDR sends the multicast stream to a UDR by the SPT. The invention also discloses a system for realizing the Anycast-RP mechanism. According to the technical scheme of the invention, the Anycast-RP mechanism is simply realized.

Description

technical field [0001] The invention relates to network protocol multicast technology in the field of data communication, in particular to a method and system for realizing anycast convergence point mechanism. Background technique [0002] Internet Protocol (IP, Internet Protocol) multicast technology provides a point-to-multipoint data forwarding method at the network layer. In the application field of network data transmission, multicast has efficient bandwidth and delivers the same data to multiple receiving sites at one time. Content capacity reduces network and server load. So far, IP multicast technology has been widely used in value-added services such as video on demand, Internet Protocol Television (IPTV, Internet Protocol Television), video conferencing, distance education, Internet radio, and online games. Due to the characteristics of the IP multicast technology itself, the IP multicast technology has a huge development prospect in the IP network field. [0003...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L12/56H04L29/06H04L45/16
Inventor 沈洋
Owner ZTE CORP
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