Hardware multicast method and apparatus under distributed architecture

Abstract

The invention discloses a hardware multicast method under distributed architecture and a hardware multicast device thereof, which is suitable for a node of the distributed architecture. When the node starts to distribute the multicast message of a multicast session, the existence of a hardware multicast resource providing hardware multicast support for the same destination node is identified; if the hardware multicast resource exists, the multicast message is directly distributed to the hardware multicast resource for multicast sending; if the hardware multicast resource does not exist, a newhardware multicast resource is allocated, and the multicast message is distributed to the new hardware multicast resource for multicast sending. The hardware multicast method and the hardware multicast device have the advantages that limited hardware multicast resources are saved, therefore, the support can be provided for more multicast sessions; in addition, the allocation of the hardware multicast resources is reduced, therefore, the hardware multicast efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a hardware multicast method and a hardware multicast device under a distributed architecture. Background technique [0002] With the development of the network and the improvement of the functional requirements of the equipment, the centralized equipment is often difficult to meet the actual needs, so the distributed processing architecture emerges as the times require. For example, multiple communication devices (such as routers, switches) are stacked, and each communication device can be called a node; or, the communication device itself adopts a distributed architecture, and multiple service boards jointly provide data processing functions, and each service board It can be called a node; or, if each service board of the communication device adopts multiprocessors for business processing, then each processor can also become a node. [0003] In the distributed architectur...

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Problems solved by technology

[0006] However, in practical applications, the IPC hardware multicast technology suffers from many limitations:

[0007] First of all, hardware multicast resources are limited. For example, there are only a few thousand hardware VLAN (Virtual Local Area Network, virtual local area network) resources. This number is obviously difficult to meet the requirements of various business communication between nodes;

[0008] At the same time, since the allocation of hardware multicast resources is realized by sending the multicast group members of the multicast session to the hardware chip, this process takes a long time, so the existence of the hardware multicast resource allocation process undoubtedly reduces the The efficiency of its multicast sessions; especially in the case of multiple hardware multicast resource allocations at the same time, due to the limited processing capabilities of nodes, the allocation process will consume more time, which will lead to a more significant reduction in the efficiency of the corresponding multicast sessions

Since inter-node communication is a key technology of the distributed architecture, its efficiency directly affects the overall performance of the distributed architecture, so allocating a hardware multicast resource for each multicast session will inevitably lead to a decline in the overall performance of the distributed architecture

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