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.
Configure IP parameters
TCP/IP parameters (such as IP address, subnet mask, default gateway) can be configured on the MFP manually (for example, through the embedded Web server, and HP management software), or automatically downloaded using DHCP or BOOTP each time the MFP is turned on.
When powered on, a new MFP that is unable to retrieve a valid IP address from the network automatically assigns itself a default IP address. The default IP address depends on the type of network to which the MFP is connected. On a small private network, a technique called
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 (MFP 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 network into subnets can result in better performance and improved use of limited network address space.
Subnet mask
The subnet mask is a mechanism used to divide a single IP network into several different subnetworks. For a given network class, a portion of an IP address that would normally be used to identify a node is used, instead, to identify a subnetwork. A subnet mask is applied to each IP address to specify the portion used for subnetworks, and the portion used to identify the node. See Manually configure a static IP address for more information about obtaining subnet mask data.
Table 11-5 Example: Subnet mask 255.255.0.0 applied to class A network
Class A Network Address | Network 15 | xxx | xxx | xxx |
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Subnet Mask | 255 | 255 | 0 | 0 |
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IP Address fields with Subnet | Network | Subnet | Host | Host |
Mask applied |
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106 Chapter 11 Network Setup and Administration (HP Color LaserJet CM1017 MFP) | ENWW |
