English name for the router, Router, is used to connect multiple networks or network equipment segment.These networks can be several different protocols and architecture of the network (such as the Internet and local area network), can be several different segments of the network (the Internet in different sectors such as large-scale networks), when the data transfer information from one department to the networkAnother sector network, the router can be completed.Now, families are increasingly used in local area network router to share the way broadband Internet access.
Routers connect different networks or network segments at the time, these networks can be carried out between the data "translation" and then "translated" into both sides can "read" to understand the data, it can be achieved between different networks or network segmentsinteroperability (see Figure).It also has a network address and select the path to determine the function and the filtering and separating the functions of the network information flow.Currently, all backbone routers within the network has become between the backbone and between the backbone network and the Internet connection between the hub.
NAT: full name of the Network Address Translation (NAT), NAT router function can be through the internal LAN IP address into a legitimate IP address and make Internet access.For example, the internal LAN IP address of 192.168.0.1 with a computer, of course, through the IP address can communicate within the network of other computers; but if the computer to access the external Internet network, then through a NAT function to convert 192.168.0.1for the WAN IP address of a legitimate, such as 210.113.25.100.
DHCP: full name of the Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol), through the DHCP function, the router can dynamically specify the host network IP address, without the need for each user to set a static IP address and TCP / IP configuration parameters distributionLAN network to legitimate clients.
DDNS: full name of the Dynamic Domain Name Server (Dynamic Domain Name System), commonly referred to as "dynamic DNS", because in the general use of broadband Internet access are ISP (Internet service providers) to provide a dynamic IP address.If you set up a server within the LAN Internet users need to access, then through the router's DDNS feature dynamic IP address resolution for a fixed domain, such as www.cpcw.com, so Internet users can adopt the fixed domaininternal network servers.
PPPoE: full name of the PPP over Ethernet (Ethernet Point to Point Protocol), through the PPPoE technology that allows broadband modem (such as ADSL Modem) user access to broadband access to the personal authentication, each user can create a virtual dial-up connection,This allows high-speed connectivity to the Internet.Routers have this feature, you can achieve the automatic PPPoE dial-up connection, so users can connect with the router to automatically connect to the Internet.
ICMP: full name of the Internet Control Message Protocol (Internet Control Message Protocol), the protocol is TCP / IP protocol focused on a sub-protocol, mainly used for transmission between the host and the router control information, including reporting errors, the exchange limited control and statusinformation.