Table A-2 Network Class Characteristics
Class Leading Bit
Identifier
Address Range Maximum Number of
Networks in the Class
Maximum Hosts in the
Network
A 0 0.0.0.0 to
127.255.255.255
126 Over 16 Million
B 10 128.0.0.0 to
191.255.255.255
16,382 65,534
C 110 192.0.0.0 to
223.255.255.255
Over 2 Million 254
Configuring IP Parameters
TCP/IP configuration parameters (such as IP address, subnet mask, default gateway) can be
configured on the HP Jetdirect print server in a variety of ways. These values can be configured
manually (for example, through the printer control panel, Telnet, the embedded Web server, the arp
and ping commands, and HP management software), or they can be automatically downloaded
using DHCP or BOOTP each time the print server is turned on. For configuration methods, see
TCP/
IP Configuration.
When powered on, a new HP Jetdirect print server that is unable to retrieve a valid IP address from
the network will automatically assign itself a default IP address. The default IP address will depend
on the type of network to which the print server is connected. On a small private network, a
technique called link-local addressing is used to assign a unique IP address in the range of
169.254.1.0 to 169.254.254.255, which should be valid. On a large or enterprise network, a
temporary address of 192.0.0.192 will be assigned until it is properly configured for your network.
The IP address configured on your print server may be determined by inspecting the Jetdirect
configuration page for the print server.
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
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.
To configure the device, the client broadcasts a boot request packet containing at least the hardware
address of the device (HP Jetdirect print server hardware address). The server answers with a boot
reply packet containing the information the device needs to configure.
Subnets
When an IP network address for a particular network class is assigned to an organization, no
provision is made for more than one network being present at that location. Local network
administrators use subnets to partition a network into several different subnetworks. Splitting a
ENWW Configuring IP Parameters 87
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