Kongsberg Simrad SN90, Installation Manual

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381298/C
IP addressing and UDP port principles
The Ethernet traffic between the SN90 and external devices, such as sensors or peripheral
systems, is made using
Internet Protocol (IP) and User Datagram Protocol (UDP) ports.
Internet Protocol (IP) address
An Internet Protocol (IP) address is a numerical identification and logical address that is
assigned to devices participating in a computer network that uses the Internet Protocol for
communication between its nodes. Although IP addresses are stored as binary numbers,
they are usually displayed in human-readable notations, such as 208.77.188.166.
A typical "device" is the Ethernet adapter in your Processor Unit.
Ethernet
adapter
Ethernet
adapter
DATA
DATA
UDP Port
UDP Port UDP Port
UDP Port
IP
Address
IP
Address
Ethernet
communication
DATA
DATA
Local system Remote system
(CD019401_100_001)
The role of the IP address has been characterized as follows: "A name indicates what we
seek. An address indicates where it is. A route indicates how to get there”.
User Datagram Protocol (UDP)
The User Datagram Protocol (UDP) is one of the core members of the Internet Protocol
Suite, the set of network protocols also used for the Internet. With UDP, computer
applications can send messages, in this case referred to as datagrams, to other hosts on an
Internet Protocol (IP) network without requiring prior communications to set up special
transmission channels or data paths (TCP).
UDP is sometimes referred to as the Universal Datagram Protocol .
Datagram sockets and ports
UDP applications use datagram sockets to establish host-to-host communication.
Sockets connect the application to service ports , these function as the endpoints of the
data transmission.
A port is a software structure that is identified by the port number, a 16-bit integer value,
allowing for port numbers between 0 and 65,535.
Simrad SN90