Multicast service management device and forwarding device

Abstract

The invention provides a multicast service management device and a corresponding forwarding device. The forwarding device comprises a service control unit, an access port and a service forwarding unit, wherein the service control unit receives a service scheduling instruction sent by a virtual machine (VM), obtains a multicast address used by a coding terminal carried by the instruction, an IP address of the coding terminal and an IP address of a decoding terminal, determines an access port of a branch containing the coding terminal according to the IP address of the coding terminal, and sends an IGMP Report message from the access port corresponding to the coding terminal to request accession of a corresponding multicast group so as to obtain a multicast stream sent by the coding terminal; the access port determines the branch containing the decoding terminal according to the IP address of the decoding terminal, generates a corresponding multicast forwarding entry, and adds the entry into a multicast forwarding table; and the service forwarding unit is used for querying the multicast forwarding table and forwarding the multicast stream to the decoding terminal when receiving the multicast stream sent by the coding terminal. The management device and the forwarding device effectively solve the problem of flooding access links of multicast traffic to headquarters.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to a multicast service management device and a forwarding device. Background technique [0002] Compared with the traditional analog video surveillance solution, the current IP video surveillance system has made great progress in many aspects, and has huge advantages over traditional analog surveillance in terms of large-scale networking, massive data management, and long-distance transmission. . Please refer to figure 1 , in a typical IP video surveillance system network, many branches will access the network of the headquarters through dedicated lines using Layer 2 networking. However, due to the high cost of leased physical / virtual private lines, the leased access link bandwidth is often not large. [0003] In this context, when the monitoring network is deployed in the branch, due to the performance limitation of the front-end equipment, users generally use multicast to send v...

AI Technical Summary

Problems solved by technology

However, since the IGMP querier is generally deployed in the monitoring center of the headquarters, this will cause a copy of the local on-demand multicast traffic to the querier, which means that the video multicast traffic will definitely flood to the aforementioned access link. Traffic will consume a lot of bandwidth, which will inevitably have a great impact on the access bandwidth that is not abundant. Please refer to figure 1 Schematic diagram of multicast traffic flooding in , which has a great impact on normal data communication and unicast access to video images of branches at the headquarters

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