HP 310X - Manual (Page 26)

information, see the embedded web server .
Overview of TCP/IP protocol
Information to help you gain a basic understanding of TCP/IP:
Similar to a common language that people use to communicate with
each other, TCP/IP (Transmission Control Protocol/Internet Protocol)
is a suite of protocols designed to define the way computers and other
devices communicate with each other over a network.
TCP/IP is rapidly becoming the most used set of protocols. The main
reason this is happening is the fact that the internet is based on
TCP/IP. If you have a network that you wish to connect to the
internet, you must be using TCP/IP to communicate.
Internet Protocol (IP)
When information is sent across the network, the data is broken down
into small packets. Each packet is sent independently of one another.
Each packet is encoded with IP information, such as the IP address of
the sender and receiver. IP packets can be routed over routers and
gateways, devices that connect a network with other networks.
IP communications is connectionless. When IP packets are sent, there
is no guarantee that they arrive at their destination in the proper
sequence. That task can be performed by higher level protocols and
applications thereby allowing IP communications to be efficient.
Each node or device that will communicate directly onto the network
requires an IP address, including HP Jetdirect-connected devices.
Transmission Control Protocol (TCP)
TCP handles breaking the data into packets and recombining the
packets on the receiving end by providing a connection-oriented,
reliable, and guaranteed delivery service to another node on the
network. When data packets are received at their destination, TCP
calculates a checksum for each packet to verify the data is not corrupt.
If the data in the packet has been corrupted during transmission, TCP
discards the packet and requests that the packet be resent.
User Datagram Protocol (UDP)
UDP provides similar services to TCP. However, UDP does not
acknowledge data receipt and supports request/reply transactions with