This will cause multicast service deployed more difficulty on Metro-E network. In this paper, I analyze and study IP multicast control technology on L2 Metro-E network.

在本文中，笔者首先对已有IP组播控制技术分析，针对城域以太网的二层网络对IP组播控制技术进行研究。

youdao

Ip is also authorized to sell Metro passes and postal stamps.

NPR: The Changing Face of France's Bistros