点到点协议

课题深入分析了PPP（点到点协议）、LAPS（SDH上的链路接入规程）和GFP（通用成帧程序）封装协议各自的特点，提出了GFP封装协议封装以太网业务的优势。

The subject analyzes the characteristics of PPP ( Point-to-Point Protocol ), LAPS ( Link Access Procedure & SDH ) and GFP ( Generic Framing Procedure ) .

GPRS拨号上网程序是无线应用接入GPRS网络进行移动互连的基础，通过分析GPRS网络接入的一般原理，设计了一个采用点到点协议的拨号上网程序，提供了一个可行的GPRS网络接入方法。

GPRS dial-up program is the base of wireless application accessing the GRPS network and realizing the mobile internet . By analyzing the common principle of GPRS network access and designing a dial program with adapting Point-to-Point Protocol , a viable accessing scheme is present .

该网采用点到点协议，利用高层数据链路控制组帧.波分复用技术可充分利用单模光纤容量，以满足不断增长的电信与Internet服务的需要。

The network adopts point-to-poir protocols and uses high-layer data link to control framing WDM technologies make good use of the capacity of single mode fiber to meet the increasing demand for telecom an Internet services .

TCP是面向连接的可靠点到点协议，但是由于卫星网络中典型的长延时、高误码率以及非对称带宽的特点，导致TCP通过宽带卫星网络时，信道利用率非常低。

TCP is a reliable point-to-point connection-oriented protocol , but the features of satellite network such as long delay , high bit error , and asymmetric bandwidth can result in very low channel utilization when TCP works over broadband satellite networks .

很多技术都可以用于VPN的实现，比如PPTP协议（Point-to-PointTunnelingProtocol，点到点通道协议）；

Many technologies can implement VPN , these technologies include PPTP ( Point-to-Point Tunneling Protocol );

点到点隧道协议（PPTP）是用来保证TCP/IP上的PPP连接安全的。

The Point-to-Point Tunneling Protocol ( PPTP ) is used to secure PPP connections over TCP / IP link .

故提出增强型第二层隧道协议eL2TP解决方案，该方案扩展了L2TP协议，借助微软点到点加密协议MPPE保证数据的机密性。

We propose Enhanced Layer Two Tunneling Protocol which extends L2TP protocol and ensures the data confidentiality with the help of Microsoft Point to Point Encryption Protocol .

本文在介绍TCP/IP协议、加密技术等与VPN相关知识的基础上，较详细论述了IPsec协议和VPN的两个主要协议：点到点隧道协议（PPTP）和层2隧道协议（L2TP）。

After introducing the correlative knowledge of VPN , such as TCP / IP protocols , Encryption technology and so on , the article discusses in detail the IPsec protocol and the two main protocols of VPN : PPTP and L2TP .

整个网络拥塞和避免机制是由用户终端的点到点传输控制协议（TCP）拥塞控制机制以及路由器端的队列管理机制构成。

The whole Internet congestion and avoidance mechanism is a combination of the end-to-end Transmission Control Protocol ( TCP ) congestion control mechanism at the end hosts and the queue management mechanism at the routers .

本文首先介绍了用户网络接口（UNI）上建立点到点SVC的信令协议Q.2931及建立点到多点SVC的信令协议Q.2971。

The paper describes the point to point SVC signaling protocol Q. 2931 and the point to multipoint SVC signaling protocol Q. 2971 at the user network interface .