HP 310X - Manual (Page 28)

Gateways
Gateways (routers) are used to connect networks together. Gateways
are devices that act as translators between systems that do not use the
same communication protocols, data formatting, structures, languages,
or architectures. Gateways repackage the data packets and change the
syntax to match that of the destination system. When networks are
divided into subnets, gateways are required to connect one subnet to
another.
Default Gateway
The default gateway is the gateway or router that, if not specified, will
be used to move packets between networks. It is specified by an IP
address.
If multiple gateways or routers exist, then the default gateway is
typically the address of the first, or nearest, gateway or router. If no
gateways or routers exist, then the default gateway will typically
assume the IP address of the network node (such as the workstation or
HP Jetdirect print server).
DHCP or BOOTP for auto-configuration of TCP/IP services
These services are used to obtain IP configuration data to print servers
on the network, partially or wholly replacing the manual configuration
using wizards, utilities, and the other real-time tools described on this
page.
Dynamic Host Configuration Protocol (DHCP)
DHCP allows a group of devices to use a set of IP addresses that are
maintained by a DHCP server. The device or host sends a request to
the server, and if an IP address is available, the server assigns it to that
device.
BOOTP and TFTP
BOOTP is a bootstrap protocol used to download configuration
parameters and host information from a network server. BOOTP uses
UDP for its transport. In order for devices to boot and load
configuration information into RAM, they must communicate through
the bootstrap protocol BOOTP as a client with their server. The
downloaded configuration data may also identify a file containing
extended configuration data, to be downloaded by the print server
using TFTP.