HP 2605dtn - Manual (Page 101)

Class A Network Address Network 15 xxx xxx xxx
IP Address fields with Subnet
Mask applied Network Subnet Host Host
Example of a node’s IP Address
on Subnet 1 15 1 25 7
Example of a node’s IP Address
on Subnet 254 15 254 64 2
As illustrated in Table 8-7 Example: Subnet mask 255.255.0.0 applied to class A network , the Class
A IP network address “15” has been assigned to company ABC. To allow additional networks at
company ABC’s site, the subnet mask of 255.255.0.0 is used. This subnet mask specifies that the
second byte of the IP address will be used to identify up to 254 subnets. Using this designation, each
device is uniquely identified on its own subnet, but company ABC can incorporate up to 254
subnetworks without violating their assigned address space.
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 printer).
TCP/IP configuration
To operate properly on a TCP/IP network, the printer must be configured with valid TCP/IP network
configuration parameters, such as an IP address that is valid for your network.
CAUTION Changes to these settings might result in a loss of functionality with your printer.
For example, HP Web JetAdmin might stop working with certain settings changes.
Server-based, AutoIP, and manual TCP/IP configuration
When in a factory-default state and powered on, the printer will first try to obtain its TCP/IP
configuration using a server-based method, such as BOOTP or DHCP. If the server-based method
fails, the printer will then be configured using the AutoIP protocol. The printer may also be configured
manually. Manual-based tools include a Web browser, the printer control panel, or the HP ToolboxFX
utility. TCP/IP configuration values assigned manually will be retained when the printer is powered off/
on. The printer can also be reconfigured to use either server-based only (BOOTP and/or DHCP), and/
or AutoIP only, or manual configuration of TCP/IP settings at any time.
Table 8-7 Example: Subnet mask 255.255.0.0 applied to class A network (continued)
ENWW TCP/IP 89