📜  广播和组播的区别

📅  最后修改于: 2021-09-27 15:05:19             🧑  作者: Mango

1. 广播:
广播传输(一对多)技术可以分为两种类型:有限广播、直接广播。在广播模式下,传输发生在从一台主机到 LAN 上连接的所有其他主机。桥接等设备使用此。像ARP这样的协议实现了这一点,以便知道主机对应IP地址的MAC地址。 ARP 执行 ip 地址到 mac 地址的转换。 RARP 则相反。

2. 多播:
多播有一个/多个发送者和一个/多个接收者参与数据传输流量。在多播中,流量在单播和广播的边界之间倾斜。它服务于数据流的直接单一副本,然后模拟并路由到请求它的主机。 IP 多播需要支持其他一些协议,例如 IGMP(Internet 组管理协议)、多播路由才能工作。并且在有类 IP 寻址中,D 类是为多播组保留的。

广播和多播的区别:

S.No. Broadcast Multicast
1. It has one sender and multiple receivers. It has one or more senders and multiple receivers.
2. It sent data from one device to all the other devices in a network. It sent data from one device to multiple devices.
3. It works on star and bus topology. It works on star, mesh, tree and hybrid topology.
4. It scale well across large networks. It does not scale well across large networks.
5. Its bandwidth is wasted. It utilizes bandwidth efficiently.
6. It has one-to-all mapping. It has one-to-many mapping.
7. Hub is an example of a broadcast device. Switch is an example of a multicast device.