Multicast and broadcast are modes of one-to-many communication, which can help enterprises reduce network bandwidth consumption and network load through point-to-multipoint efficient data transmission.
If unicast is used, the sending server needs to separately send to N servers for total N times. If multicast is used, the server sends the same data to N servers only once, which reduces server resource consumption and also bandwidth resources of the backbone network.
- The broadcast and multicast features are currently in beta phase. To become a beta user, please submit an application for broadcast or multicast.
- Currently, the broadcast and multicast features are available in Beijing, Shanghai, Guangzhou, Nanjing, Chengdu, Chongqing, and Hong Kong, China.
Multicast and broadcast are mostly used in the financial and game industries:
This document describes how to enable or disable broadcast for subnets.
For detailed directions regarding VPC multicast, see Enabling or Disabling Multicast.