Method and system for realizing Anycast-RP mechanism

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...

AI Technical Summary

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

Images