Method for realizing rendezvous point election in PIM-SM

Abstract

The invention relates to a method for realizing rendezvous point election in PIM-SM. The method comprises the following steps: an RP Hello protocol is provided and is used for rendezvous point election in PIM-SM; the protocol is applied to each multicast group in a network; each router in the PIM-SM domain sends an RP Hello data packet to an adjacent router periodically and receives data packets from neighbor routers, dynamically compares the RP values with the corresponding RP priorities, updates and maintains the multicast RP selection table, and finally elects the RP value with the maximumRP priority as a rendezvous point corresponding to the multicast group. According to the RP Hello protocol provided by the invention, the protocol operation is simple, the configuration content is less, and the problems of large configuration amount and complex configuration of the traditional bootstrap protocol are solved; and meanwhile, a flattened network structure is adopted, so that the single-point fault problem of the bootstrap router in a bootstrap protocol is avoided.

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...

AI Technical Summary

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

Images