Background
Multicast and broadcast are modes of one-to-many communication, which can save businesses on the network bandwidth and reduce network load through point-to-multipoint efficient data transmission.
In the unicast mode, the initiating server sends data to N servers separately. In the multicast or broadcast mode, the server sends the same data to N servers at one time, which reduces the server resource consumption and also the bandwidth resource of the backbone network.
Multicast: Tencent Cloud supports multicast on the VPC dimension.
Broadcast: Tencent Cloud supports broadcast on the subnet dimension.
Notes
The trial period has ended.
Currently, multicast and broadcast are supported in the following regions: Beijing, Shanghai, Guangzhou, Chengdu, Chongqing, Nanjing, Hong Kong (China), Singapore, Seoul, Tokyo, Bangkok, Toronto, Silicon Valley, Virginia, Frankfurt, Shenzhen Finance, Shanghai Finance, and Beijing Finance.
For single-VPC multicast and broadcast, up to 50,000 PPS and 190 Mbps are supported.
Scenario
Multicast and broadcast are mostly used in the financial and game industries.
In the financial industry, multicast and broadcast are mainly used for broadcast services or market data. For example, after obtaining stock prices and other real-time data, brokers can broadcast stock data to multiple clients in real time, effectively reducing network load.
For the game industry, broadcast and multicast are mainly used for heartbeat holding between multiple servers.
This document describes how to enable or disable broadcast for subnets.
Instructions
Enabling broadcast
1. Log in to the VPC console.
2. Click Subnets on the left sidebar.
3. In the list, locate the row of the Virtual Private Cloud that requires broadcast functionality, click Enable under Subnet Broadcast, and confirm the operation.
Disabling broadcast
1. Log in to the VPC console.
2. Click Subnets on the left sidebar.
3. In the subnet list, locate the subnet that needs to disable broadcast, toggle off Subnet broadcast, and confirm the operation.