User manual
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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.   
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. 










