Anycast service is a new service model supporting distributed duplication.

选播是一种支持分布式服务器复制的新的服务模型。

Unfortunately, anycast does not fit well with TCP and is rarely used in that scenario.

美中不足，Anycast与TCP协议适应的不是很好，所以很少应用在那些方案中。

Anycast is a routing technique where a single IP address maps to multiple physical servers.

Anycast是一个IP地址映射多个物理主机的路由技术。

The protocols and standards for anycast are under the discussion, but have not reached a consensus.

关于选播的一些协议和标准正在讨论之中，但仍然没有达成共识。

Most of the DNS servers themselves use anycast to achieve high availability and low latency of the DNS lookups.

大多数DNS服务器使用Anycast来获得高效低延迟的DNS查找。

Anycast service can be used in a wide area such as choosing best server, host automatic configure and so on.

这种服务在最优服务的选择、主机的自动配置等方面有着广泛的应用前景。

To solve the secure weakness in the anycast group management, a solution based on ca mechanism is presented.

针对现有选播安全组管理方案的安全脆弱性，采用基于CA机制提出一种新的选播安全组管理解决方案。

The implementations of distributed anycast address and transmitted anycast data by network-layer anycast are also presented.

选播服务是一种新的网络服务模型 ，可以改善网络负载分布和简化某些网络应用。

Experimental results indicate that these weight assignment algorithms can make for the performance improvement of anycast routing.

实验结果表明这些权重分配算法有助于提高选播路由的性能。

Then, the request with this anycast address as the destination is forwarded to the group member through a direct mode or a tunneling mode.

再由该分区内的路由器将目标地址为该选播地址的请求以直接方式或者隧道方式转发到这个组成员。

Researches on ANYCAST in Mobile Ad hoc network are analyzed with the discussion of conception, networking model, and the service choosing measures of ANCAST.

并且讨论了泛播的基本概念，网络模型和服务选择标准，对移动自组网络中的泛播研究现状进行了回顾和分析。

According to the characteristics of sensor networks and anycast, this thesis firstly analyses some anycast routing protocols of sensor networks in existence.

根据传感器网络和选播通信的特点，本文首先分析现有的传感器网络选播路由协议。

In this paper, all the relay routers are taken as a virtual node by assigning them an anycast address which is accessed along the shortest path by anycast routing.

为所有中继路由器分配一个泛播地址，将它们当作一个逻辑节点，借助泛播路由以最短路径到达该逻辑节点。

We also design the anycast routing and data transmission mechanisms for the anycast relay routing system, which improves the efficiency and reliability of relay routing.

设计基于泛播的中继路由系统的路由维护和数据传输机制，提高中继路由的可靠性和路由效率。