Planet Technology Router XRT-401D User Manual

							 56 11011001.10110000.10010000.00000000, and its host ID is, 
00000000.00000000.00000000.00000111. This is a convenient and efficient method for routers 
to route IP packets to their destination. 
ISP Gateway Address: (see ISP for definition). The ISP Gateway Address is an IP address for 
the Internet router located at the ISPs office.  
ISP: Internet Service Provider. An ISP is a business that provides connectivity to the Internet for 
individuals and other businesses or organizations.  
LAN: Local Area Network. A LAN is a group of computers and devices connected together in a 
relatively small area (such as a house or an office). Your home network is considered a LAN.  
MAC Address: MAC stands for Media Access Control. A MAC address is the hardware address 
of a device connected to a network. The MAC address is a unique identifier for a device with an 
Ethernet interface. It is comprised of two parts: 3 bytes of data that corresponds to the 
Manufacturer ID (unique for each manufacturer), plus 3 bytes that are often used as the product’s 
serial number. 
NAT: Network Address Translation. This process allows all of the computers on your home 
network to use one IP address. Using XRT-401D’s NAT capability, you can access the Internet 
from any computer on your home network without having to purchase more IP addresses from 
your ISP.  
Port: Network Clients (LAN PC) uses port numbers to distinguish one network 
application/protocol over another. Below is a list of common applications and protocol/port 
numbers: Application Protocol Port Number Telnet TCP 23 FTP TCP 21 SMTP TCP 25 POP3 TCP 110 H.323 TCP 1720 SNMP UCP 161 SNMP Trap UDP 162 HTTP TCP 80 PPTP TCP 1723 PC Anywhere TCP 5631 PC Anywhere UDP 5632  
 
PPPoE: Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a secure data 
transmission method originally created for dial-up connections; PPPoE is for Ethernet 
connections. PPPoE relies on two widely accepted standards, Ethernet and the Point-to-Point 
Protocol. It is a communications protocol for transmitting information over Ethernet between 
different manufacturers 
 
Protocol: A protocol is a set of rules for interaction agreed upon between multiple parties so that 
when they interface with each other based on such a protocol, the interpretation of their behavior 
is well defined and can be made objectively, without confusion or misunderstanding.  
  
						

							 57 Router: A router is an intelligent network device that forwards packets between different 
networks based on network layer address information such as IP addresses. 
Subnet Mask: A subnet mask, which may be a part of the TCP/IP information provided by your 
ISP, is a set of four numbers (e.g. 255.255.255.0) configured like an IP address. It is used to 
create IP address numbers used only within a particular network (as opposed to valid IP address 
numbers recognized by the Internet, which must be assigned by InterNIC).  
TCP/IP, UDP: Transmission Control Protocol/Internet Protocol (TCP/IP) and Unreliable Datagram 
Protocol (UDP). TCP/IP is the standard protocol for data transmission over the Internet. Both TCP 
and UDP are transport layer protocol. TCP performs proper error detection and error recovery, 
and thus is reliable. UDP on the other hand is not reliable. They both run on top of the IP (Internet 
Protocol), a network layer protocol. 
 
WAN: Wide Area Network. A network that connects computers located in geographically 
separate areas (e.g. different buildings, cities, countries). The Internet is a wide area network. 
 
Web-based management Graphical User Interface (GUI): Many devices support a graphical 
user interface that is based on the web browser. This means the user can use the familiar 
Netscape or Microsoft Internet Explorer to Control/configure or monitor the device being managed.