HP Color LaserJet CP1515n Printer - Manual (Page 38)

Table 4-4 IP addressing
Service name Description
DHCP (Dynamic Host Configuration Protocol) For automatic IP address assignment. The DHCP server
provides the device with an IP address without requiring the
user to intervene.
BOOTP (Bootstrap Protocol) For automatic IP address assignment. The BOOTP server
provides the device with an IP address after the administrator
inputs the product MAC hardware address on the BOOTP
server.
Auto IP For automatic IP address assignment. If neither a DHCP
server nor a BOOTP server is present, the product uses this
service to generate a unique IP address.
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.
Internet Protocol (IP)
When information is sent across the network, the data is broken down into small packets. Each packet
is sent independently. 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 require no connection. When IP packets are sent, they might not arrive at their
destination in the correct sequence. However, higher-level protocols and programs place the packets
in the correct sequence, so IP communications are efficient.
Each node or device that communicates on the network requires an IP address.
Transmission Control Protocol (TCP)
TCP breaks the data into packets and recombines them 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 that 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.
IP address
Every host (workstation or node) on an IP network requires a unique IP address for each network
interface. This address is a software address that is used to identify both the network and specific hosts
that are located on that network. It is possible for a host to query a server for a dynamic IP address each
time the device boots up (for example, using DHCP and BOOTP).
An IP address contains four bytes of information, divided into sections that each contain one byte. The
IP address has the following format:
xxx.xxx.xxx.xxx
NOTE: When assigning IP addresses, always consult the IP address administrator. Setting the wrong
address can disable other equipment operating on the network or interfere with communications.
28 Chapter 4 I/O configuration ENWW