multicast

简明释义

英[ˈmʌltikɑːst]美[ˈmʌltikæst]

v. （在网络上）多播（数据）

n. 多路广播；多路传送

英英释义

单词用法

同义词

反义词

例句

1.DataPort: the destination port that is used in combination with the multicast group address; this defaults to 34343.

dataPort：用于结合多播组地址的目标端口，默认是34343。

2.Furthermore, some IP addresses are defined to be multicast, so 224.x.x.x, 232.0.0.x and 233.0.0.x are defined to be multicast address Spaces.

此外，还有一些IP地址被定义用来进行多播，224 .x.x.x、232.0.0 . x和233.0.0 . x都被定义为多播地址空间。

3.One of the many things we like about JGroups is that it provides a good reliable multicast stack.

我们喜欢JGroups的众多原因之一是它提供了一个非常好的可靠的广播栈。

4.Multicast Client-Server Discovery and grouping.

多路客户——服务器端的探知和分组。

5.Listing 10 shows how a host USES multicast datagrams to receive and send messages.

清单10演示主机如何使用多播数据报接收和发送消息。

6.Being a one-to-one protocol, SSL does not support multicast applications very well.

作为一种一对一协议，SSL不能很好地支持多播应用程序。

7.The address of the NIC on which the multicast data will be received.

NIC地址，在其中多播数据将被接收。

8.Listing 9 shows how to subscribe to or unsubscribe from multicast messages.

清单9演示如何预订多播消息或取消预订。

9.Peer computers that have subscribed to a multicast group receive all messages that any of the component peers sends to the group.

已经预订某一多播组的对等计算机会收到任何成员发送给这个组的所有消息。

10.To enhance performance, the streaming service implemented multicast 组播 for its live channels.

为了提高性能，流媒体服务为其直播频道实施了multicast 组播。

11.In a video conferencing application, users can choose to receive a multicast 组播 stream to save bandwidth.

在视频会议应用中，用户可以选择接收一个multicast 组播流以节省带宽。

12.Using multicast 组播, the live sports event was broadcasted to thousands of viewers simultaneously.

通过multicast 组播，这场现场直播的体育赛事同时传送给成千上万的观众。

13.A multicast 组播 routing protocol is essential for efficient data transmission in large networks.

在大型网络中，multicast 组播路由协议对于高效数据传输至关重要。

14.The network administrator set up a multicast 组播 address to efficiently distribute software updates to all computers in the office.

网络管理员设置了一个multicast 组播地址，以有效地向办公室内所有计算机分发软件更新。

作文

In the realm of networking, the term multicast refers to a communication method where data is sent from one source to multiple destinations simultaneously. This technique stands in contrast to unicast, where data is sent to a single recipient, and broadcast, which sends data to all devices on a network. The efficiency of multicast makes it particularly valuable for applications that require the distribution of the same data to numerous users, such as live video streaming, online gaming, and real-time data feeds.One of the primary advantages of multicast is its ability to conserve bandwidth. In traditional unicast scenarios, if a single piece of content, like a video stream, is requested by multiple users, the server must send a separate copy of the data to each user. This can lead to significant strain on network resources, especially when many users are accessing the same content. With multicast, however, the server only sends one copy of the data stream, which is then distributed to all interested users. This not only reduces the amount of bandwidth consumed but also decreases the load on the server, allowing it to handle more connections efficiently.Implementing multicast requires specific protocols and configurations within the network infrastructure. Protocols such as Internet Group Management Protocol (IGMP) and Protocol Independent Multicast (PIM) are essential for managing multicast groups and routing multicast traffic appropriately. These protocols help ensure that data packets reach their intended recipients while avoiding unnecessary duplication of data streams.Furthermore, multicast plays a crucial role in enhancing user experience in various applications. For instance, during a live sports event broadcasted over the internet, millions of fans may want to watch the game simultaneously. By utilizing multicast, the service provider can deliver the live feed to all viewers without overwhelming the network. This results in smoother streaming experiences, reduced buffering times, and overall better quality for the end-users.However, despite its advantages, multicast is not without challenges. One of the main issues is the complexity of setting up and maintaining a multicast network. Network administrators must ensure that all routers and switches are configured correctly to support multicast traffic. Additionally, different network environments, such as those involving firewalls or varying Quality of Service (QoS) requirements, can complicate multicast implementation.Moreover, not all applications benefit equally from multicast. For example, applications that require guaranteed delivery of messages, such as file transfers, may not be suitable for multicast, as it does not provide the same level of reliability as unicast. Therefore, developers must carefully consider the nature of their applications and the network environment before deciding to implement multicast.In conclusion, multicast is a powerful tool in the world of networking that facilitates efficient data distribution to multiple users at once. Its ability to save bandwidth and reduce server load makes it an attractive option for many applications, particularly those involving real-time content delivery. However, the complexities involved in setting up a multicast network and the varying suitability for different applications must be taken into account. As technology continues to evolve, the role of multicast in networking will likely expand, offering new opportunities for efficient data communication across diverse platforms.

在网络领域，术语multicast指的是一种通信方法，其中数据从一个源同时发送到多个目的地。这种技术与单播（unicast）形成对比，单播是将数据发送给单个接收者，而广播（broadcast）则是将数据发送给网络上的所有设备。multicast的高效性使其在需要将相同数据分发给众多用户的应用中尤为重要，例如直播视频流、在线游戏和实时数据反馈。multicast的主要优点之一是它能够节省带宽。在传统的单播场景中，如果许多用户请求同一内容（例如视频流），服务器必须向每个用户发送一份独立的数据副本。这可能会对网络资源造成重大压力，特别是在许多用户同时访问相同内容时。然而，通过multicast，服务器只需发送一份数据流，然后将其分发给所有感兴趣的用户。这不仅减少了所消耗的带宽量，还降低了对服务器的负载，使其能够更高效地处理更多连接。实现multicast需要在网络基础设施中使用特定的协议和配置。互联网组管理协议（IGMP）和协议独立多播（PIM）等协议对于管理multicast组和适当地路由multicast流量至关重要。这些协议有助于确保数据包到达其预期接收者，同时避免不必要的数据流重复。此外，multicast在增强各种应用的用户体验方面发挥着至关重要的作用。例如，在通过互联网直播的体育赛事中，数百万粉丝可能希望同时观看比赛。通过利用multicast，服务提供商可以向所有观众传递直播信号，而不会使网络超负荷。这导致了更流畅的流媒体体验，减少了缓冲时间，并且整体质量更好。然而，尽管有其优点，multicast也并非没有挑战。其中一个主要问题是建立和维护multicast网络的复杂性。网络管理员必须确保所有路由器和交换机都正确配置以支持multicast流量。此外，不同的网络环境，如涉及防火墙或不同服务质量（QoS）要求的环境，可能会使multicast的实施变得复杂。此外，并非所有应用都同样受益于multicast。例如，需要保证消息交付的应用（如文件传输）可能不适合multicast，因为它无法提供与单播相同级别的可靠性。因此，开发人员在决定实施multicast之前，必须仔细考虑其应用的性质和网络环境。总之，multicast是网络世界中的一种强大工具，能够有效地将数据分发给多个用户。它节省带宽和减少服务器负载的能力使其成为许多应用的一个吸引人的选择，特别是涉及实时内容交付的应用。然而，建立multicast网络所涉及的复杂性以及不同应用的适用性必须考虑在内。随着技术的不断发展，multicast在网络中的角色可能会扩展，为在各种平台上实现高效数据通信提供新的机会。