来自世界各地的大多数ISP(ISPs)（互联网服务提供商(Internet Service Providers)）都提供(world offer) 宽带互联网(broadband internet)订阅服务。他们中的一些人通过一种称为PPPoE（以太网点对点协议）的技术来做到这(Point-to-Point Protocol)一点(Ethernet)。但是，即使您按照在家中配置PPPoE 连接(PPPoE connection)的必要步骤进行操作，您仍有可能不知道PPPoE的含义或作用。如果你想了解什么是PPPoE，那么你应该阅读这篇文章。我们尽可能清楚地解释这个概念，并使用尽可能少的首字母缩略词和 IT(acronyms and IT)技术术语。让我们开始吧：
什么是PPPoE，它是什么意思？
PPPoE是首字母缩写词，代表以太网上(Ethernet)的点对点协议(Point-to-Point Protocol)。PPPoE是一种网络协议，它源自另一个较旧的协议，称为PPP，您猜对了，它代表点对点协议(Point-to-Point Protocol)。
PPPoE旨在管理数据如何通过以太网(Ethernet)（有线网络）传输，它允许使用以太网(Ethernet)在多个客户端之间划分单个服务器连接(server connection)。因此，多个客户端可以从Internet 服务提供商(Internet Service Provider)连接到同一台服务器，并同时并行访问 Internet。为简化起见，PPPoE是旧拨号连接的现代版本，在 80 年代和 90 年代流行。
PPPoE还能够提供基本的网络功能，例如身份验证、加密和数据压缩。
谁发明了PPPoE？
根据维基百科(Wikipedia)，PPPoE是由UUNET、Redback Networks（现在的Ericsson）和RouterWare（现在的Wind River Systems）在 2000 年代开发的，几年后开始流行。
点对点协议(Point-to-Point Protocol)是一种网络协议，允许两台计算机之间使用串行接口进行通信。该协议在 2000 年代之前流行，当时拨号互联网连接被广泛使用。那时(Back)，家庭用户(home user)使用PPP的最常见情况是使用调制解调器和电话线在他或她的计算机和(phone line)电信公司(telecom company)的服务器之间建立连接。这些被称为拨号连接，它们是人们访问互联网的一种方式。
然而，随着时间的推移，互联网呈指数级增长，技术(time and technology)也在以类似的速度发展。几年后，使用拨号连接已经不够用了，而今天，以 28 或 56 kbit/s 的速度连接到Internet是不可接受的。(Internet)还值得一提的是，使用PPP 协议(PPP protocol)的旧拨号连接只能将一台个人计算机连接到ISP 服务器(ISP server)。由于公司和家庭希望同时将不止一台计算机连接到互联网，而且由于互联网的快速增长(internet growth)和对更高网络速度的需求，必须开发一种新的网络协议。(networking protocol)这就是PPPoE问世的时候。
PPPoE 是做什么用的？
PPPoE主要由互联网服务提供商用来向其订户提供互联网连接。为了帮助您了解他们如何使用PPPoE，这里有一个超现实的例子来说明它是如何工作的：
想象一下(Imagine)旧的拨号连接，例如您和老板之间的电话交谈。只有你们两个可以参与对话。但是，如果您的老板想与您的所有团队交谈怎么办？如果您的对话是拨号连接，那么您的所有团队都必须聚集在同一个电话听筒(phone earpiece)周围。这会使谈话变得有趣而无效，不是吗？旧的PPP 网络(PPP network)协议是这样的：只能进行一对一的连接。
PPPoE改变了这一点，它允许更多的客户端设备使用同一个网络连接到一台服务器。这就像你的老板(boss speaking)对你所有的团队说话，但你会有一个扬声器，这样你就不必挤在一个小耳机周围。
更进一步，PPPoE是一种网络协议，它还提供基本的网络功能，如身份验证、数据加密和数据压缩。正因为如此，PPPoE是提供互联网访问的最首选方式之一。为什么会这样，你可能会问？
由于PPPoE提供身份验证和加密(authentication and encryption)，这意味着互联网服务(Internet Service)提供商可以设置并出售各种互联网接入订阅(access subscription)计划。此外，他们所要做的就是施加带宽限制或过滤网络流量(limit or filter networking traffic)，让他们为您提供唯一的ID 和密码(ID and password)，然后他们可以识别、计量甚至过滤您的互联网流量(internet traffic)。
建立PPPoE 互联网(PPPoE internet)连接需要什么？
如果您的Internet 服务提供商(Internet Service Provider)使用PPPoE，那么您至少需要ISP提供的两件事：
- 为您分配(Assign)一个唯一的 ID（用户名）和密码，并且
- 将您连接到互联网服务提供商网络的调制解调器路由器(internet service provider)
如果您的ISP没有为您提供路由器（您也没有为自己购买路由器），那么您必须在您的计算机上手动配置PPPoE 连接。(PPPoE connection)
如何在Windows中创建PPPoE 连接(PPPoE connection)？
如果您使用Windows 10，那么本指南可以帮助您完成所有必要的步骤：如何在Windows 10中设置和使用(Windows 10)PPPoE 互联网(PPPoE internet)连接。
如果您还有来自ISP 或售后商店(ISP or aftermarket shops)的调制解调器路由器，则可以将其配置为通过PPPoE自动连接，然后为您的所有设备提供 Internet 访问。大多数无线路由器都知道如何使用PPPoE 协议(PPPoE protocol)，但它们每个都有自己的用户界面，因此您必须遵循特定于您的无线路由器型号的配置步骤。
不要害怕查阅路由器的用户手册寻求帮助。
结论
Internet 服务提供商(Internet Service Providers)在全球范围内使用PPPoE 网络(PPPoE networking)协议。结果，许多人使用这种类型的网络连接(network connection)来访问互联网。如果您是其中之一并且想知道它的含义，我们希望我们的文章能帮助您了解它是什么以及它的作用。如果您有任何问题，请随时使用下面的评论表分享。
Simple questions: What is PPPoE and what does it do?
Moѕt of the ISPs (Internet Service Providers) from all over the world offer broadband internet subscriptions. Sоme of them do it through a technolоgy called РPPоE (Point-to-Point Protocol over Ethernet). However, eνen if you followed the stеps neсessary for configuring a PРPoE connection аt home, thеre is still a chance that yоu do not know what PPPoE means or does. If you want to understand whаt PPPoE is, then you should read this article. We explain this concept as clearly as we can and with as few acronyms and IT technical terms as рossible. Let's get started:
What is PPPoE and what does it mean?
PPPoE is an acronym that stands for Point-to-Point Protocol over Ethernet. PPPoE is a networking protocol that derived from another, older protocol, called PPP, which you guessed, stands for Point-to-Point Protocol.
PPPoE was designed for managing how data is transmitted over Ethernet networks (cable networks), and it allows a single server connection to be divided between multiple clients, using Ethernet. As a result, multiple clients can connect to the same server from the Internet Service Provider and get access to the internet, at the same time, in parallel. To simplify, PPPoE is a modern version of the old dial-up connections, which were popular in the 80s and the 90s.
PPPoE is also capable of offering essential networking features, like authentication, encryption, and data compression.
Who invented PPPoE?
According to Wikipedia, PPPoE was developed by UUNET, Redback Networks (now Ericsson) and RouterWare (now Wind River Systems) in the 2000s, and became popular a few years later.
The Point-to-Point Protocol was a networking protocol that allowed communication between two computers, using a serial interface. This protocol was prevalent before the 2000s when dial-up internet connections were widely used. Back then, the most common situation in which a home user would use PPP was to establish a connection between his or her computer and a server from a telecom company, using a modem and a phone line. These were called dial-up connections, and they were a means for people to access the internet.
However, the internet grew exponentially over time and technology advanced at a similar pace. A couple of years later, using a dial-up connection would not suffice and today, connecting to the Internet at 28 or 56 kbit/s is unacceptable. It is also worth mentioning that old dial-up connections that used the PPP protocol could only connect one personal computer to the ISP server. Because companies and households wanted to simultaneously connect more than only one computer to the internet, but also because of the rapid internet growth and the demand for higher networking speeds, a new networking protocol had to be developed. This was when PPPoE came out.
What is PPPoE used for?
PPPoE is mainly used by internet service providers to offer internet connections to their subscribers. To help you understand how they use PPPoE, here is a surreal example of how it works:
Imagine old dial-up connections like a conversation over the telephone between you and your boss. It is just the two of you who can participate in the conversation. However, what if your boss wanted to speak to all your team? If your conversation were a dial-up connection, all your team would have to gather around the same phone earpiece. It would make for a funny and ineffective conversation, wouldn't it? The older PPP network protocol was like that: only one to one connections were possible.
PPPoE changed that, and it allowed more client devices to use the same network to connect to one single server. It is like your boss speaking to all your team, but you would have a loudspeaker so that you do not have to crowd around one small earpiece.
Going further, PPPoE is a networking protocol that also offers essential networking features, like authentication, data encryption, and data compression. Because of that, PPPoE is one of the most preferred means of delivering internet access. Why is that, you might ask?
Because PPPoE provides authentication and encryption, it means that Internet Service Providers can set and then sell various internet access subscription plans. Moreover, all they have to do to impose a bandwidth limit or filter networking traffic is for them to give you a unique ID and password, by which they can then identify, meter and sometimes even filter your internet traffic.
What do you need to establish a PPPoE internet connection?
If your Internet Service Provider uses PPPoE, then you need at least two things, from the ISP:
- Assign you with a unique ID (username) and password, and
- A modem-router that connects you to the network of the internet service provider
If your ISP did not provide you with a router (nor did you buy yourself one), then you have to configure the PPPoE connection manually, on your computer.
How to create a PPPoE connection in Windows?
If you use Windows 10, then this guide can help you go through all the necessary steps: How to setup and use PPPoE internet connections in Windows 10.
If you also have a modem-router from your ISP or aftermarket shops, then you can configure it to automatically connect through PPPoE and then deliver internet access to all your devices. Most wireless routers know how to work with the PPPoE protocol, but each of them has its user interface, so you have to follow the configuration steps that are specific to your model of wireless router.
Do not be afraid to consult the router's user manual for help.
Conclusion
Internet Service Providers use the PPPoE networking protocol all over the world. As a result, many people use this type of network connection to access the internet. If you are one of them and wondered what it means, we hope that our article has helped you understand what it is and what it does. If you have any questions, do not hesitate to share them using the comments form below.
