Method for transmitting multicast data by RPR and RPR node

A technology of multicast data and transmission groups, applied in the field of network communication, can solve the problem of wasting bandwidth and achieve the effect of saving bandwidth
CN101494549AInactive Publication Date: 2009-07-29NEW H3C TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NEW H3C TECH CO LTD
Publication Date
2009-07-29
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a method for transmitting multicast data on a resilient packet ring (RPR) and a RPR node. The establishment of a forward table containing the corresponding relation between a multicast group and a receiving node is realized on the RPR node which carries out upper ring processing to the message query of an internet group management protocol, thus leading the RPR node to being capable of determining a shortest forward path corresponding to the multicast group according to the topology information of the forward table and the RPR, determining that the last receiving node in the shortest forward path is a stripping node and leading the transmitted multicast data of the multicast group to stop transmission on the RPR at the stripping node. The invention can save more bandwidth of the RPR, which is occupied in the transmission process of the multicast data.
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Description

technical field

[0001] The invention relates to network communication technology, in particular to a method for transmitting multicast data on a resilient packet ring (RPR) and an RPR node. Background technique

[0002] RPR is a new type of media access control (MAC) layer protocol defined by the IEEE 802.17 working group. It has multiple technical features such as less than 50ms protection switching, automatic topology discovery, and high bandwidth utilization. RPR is a reciprocal double-ring topology. The two rings can be called the inner ring and the outer ring, both of which can transmit data. The transmission direction of the outer ring is clockwise, and the transmission direction of the inner ring is counterclockwise.

[0003] Nodes on the RPR are generally called RPR nodes, and perform the following operations on packets on the RPR: insert, copy, transit, and strip. Among them, the upper ring means that the RPR node inserts the message from outside the RPR into the R...

Claims

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