Understanding of the slip,ppp,pppoe,ethernet. [ZZ]

Often see ppp,pppoe these nouns, at that time also looked at a lot of information, but has not quite understood what this is what, what to use, today calm down, read a bit more information, have some preliminary understanding, record down, later have a new understanding and revise.

First, slip,ppp,ethernet are all link-layer protocols. Slip and PPP are point-to-point protocols, and the concept of MAC addresses is added to the Ethernet so that you can achieve a multipoint-to-point transfer effect (not sure if you understand it correctly). These three link layer protocols can host the upper layer of the network (IP layer). The initial modem used the link layer for Dial-Up Networking with the PPP protocol. And now the Internet is used with the modem and the original modem is not the same, now with the ADSL MODEM,ADSL is a physical layer of the concept, using ADSL technology can let the telephone line in the Internet when the phone does not delay. The use of ADSL modem involves a new concept of PPPoE, which combines the PPP protocol and the Ethernet protocol, the RJ45 port of the modem using the Ethernet protocol, so as to achieve a one-to-many effect, and on the telephone port this side is still using the PPP protocol, and the server connection provided by the ISP. (Is it correct to understand?) ）

Http://blog.chinaunix.net/uid-23982908-id-3061887.html

Understanding of the slip,ppp,pppoe,ethernet. [ZZ]