Multicast system, device and method based on 802.1ah protocol in MAN Ethernet network
A technology of Ethernet and metropolitan area, applied in the field of communication, can solve problems such as the inability to meet the conditions of metropolitan Ethernet to support multicast services, and achieve the effect of ensuring fast recovery and improving high reliability
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[0041] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:
[0042] In Embodiment 1 of the present invention, a multicast system based on the 802.1ah protocol in a metropolitan Ethernet is shown in Figure 3, including: Designated Router (DR, Designated Router) 10, Backup Designated Router (BDR, Backup Designated Router) ) 20 and at least one switch (Switch) 30. It should be noted that the DR and the BDR are the same routers, and they only perform corresponding functions according to whether they are designated routers or backup designated routers in the network. In case of a network failure, the backup designated router BDR may be transformed into a designated router DR, and the designated router DR may also be transformed into a backup designated router BDR, and the functions performed by the two are changed accordingly.
[0043] Specifically, the designated router 10 is configured to...
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