A realization method of rendezvous point election in pim-sm

Abstract

The present invention relates to a method for implementing the election of a convergence point in PIM-SM, the method comprising: proposing a RP Hello protocol for election of a convergence point in PIM-SM, the protocol for each multicast group in the network, Each router in the PIM-SM domain periodically sends RP Hello data packets to neighboring routers, and receives data packets from neighboring routers, dynamically compares the RP value and its corresponding RP priority, updates and maintains the multicast RP selection table, and Finally, the RP value with the highest RP priority is selected as the rendezvous point corresponding to the multicast group. The present invention proposes an RP Hello protocol, which is simple in operation and less in configuration content, and solves the problem of large and complex configuration of the traditional bootstrap protocol; at the same time, it adopts a flat network structure to avoid the problem of bootstrap routers in the bootstrap protocol. Single point of failure problem.

Description

technical field [0001] The invention relates to the field of computer network multicast, in particular to a method for realizing the election of a convergence point in PIM-SM. Background technique [0002] The rendezvous point (Rendezvous Point, RP) is the key to the operation of PIM-SM, and the RP can be statically designated or dynamically elected. Static designation cannot realize the redundant backup of RP, which is suitable for small networks; if the network scale is large, it is necessary to adopt a dynamic election method and use the Boot Strap (BS) protocol in the network, but the currently widely used bootstrap protocols are The following disadvantages: [0003] It is necessary to manually configure multiple C-RPs (Candidate-RPs, candidate RPs) in the PIM-SM domain, and configure the range of multicast groups including priorities and services; [0004] At the same time, one and only one BSR (BootStrap Router, bootstrapping router) needs to be configured in the dom...

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Problems solved by technology

[0008] In order to solve the above-mentioned problems in the prior art, the present invention provides a method for implementing the election of the convergence point in PIM-SM, which solves the problem of large amount of configuration and complex configuration in the election of the convergence point in the prior art; at the same time, a flat network structure is adopted, Avoiding Single Point of Failure Problem of Bootstrap Router in Bootstrap Protocol

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