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介绍了IPSec、L2TP、VLAN TRUNK(802.1q)和MPLS(Multi-Protocol Label Switch,多协议标签交换)等几种通用的VPN协议及虚拟专网的实现方式。描述了广西电信通过融合各地市拥有的数据城域网、无线接入网等网络,构建多种形式的VPN,为企业用户提供高质、安全的专线接入和传输VPN。最后,分析了采用运营商提供VPN的优势。
Introduces several common VPN protocols such as IPSec, L2TP, VLAN TRUNK (802.1q), and Multi-Protocol Label Switch (MPLS), and how to implement the virtual private network. Describes the Guangxi Telecom through the integration of cities around the city owned data networks, wireless access networks and other networks to build various forms of VPN for enterprise users to provide high-quality, secure private line access and transmission VPN. Finally, it analyzes the advantages of using operators to provide VPNs.