User manual HP LASERJET 2840 - Reference Guide

HP Color LaserJet 2820/2830/2840 Advanced Networking Reference Guide HP Color LaserJet 2820/2830/2840 all-in-one Advanced Networking Reference Guide Copyright and License © 2004 Copyright Hewlett-Packard Development Company, LP Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained in this document is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Part number Q3948-90947 Edition 1, 12/2004 FCC Requirements (United States) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase separation between equipment and receiver. Connect equipment to an outlet on a circuit different from that to which the receiver is located. Consult your dealer or an experienced radio/TV technician. Any changes or modifications to the printer that are not expressly approved by HP could void the user's authority to operate this equipment. Use of a shielded interface cable is required to comply with the Class B limits of Part 15 of FCC rules. This equipment complies with FCC rules, Part 68. On the back of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN) for this equipment. If requested, this information must be provided to the telephone company. The REN is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all, areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum REN for the calling area. This equipment uses the following USOC jacks: RJ11C. An FCC-compliant telephone cord and modular plug is provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant. This equipment cannot be used on telephone company-provided coin service. Connection to Party Line Service is subject to state tariffs. If this equipment causes harm to the telephone network, the telephone company will notify you in advance that temporary discontinuance of service may be required. If advance notice is not practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service. If trouble is experienced with this equipment, please see the numbers in the front of this manual for repair and (or) warranty information. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved. The following repairs can be done by the customer: Replace any original equipment that came with the device. This includes the print cartridge, the supports for trays and bins, the power cord, and the telephone cord. It is recommended that the customer install an AC surge arrestor in the AC outlet to which this device is connected. This is to avoid damage to the equipment caused by local lightning strikes and other electrical surges. Trademark Credits Adobe Photoshop® and PostScript are trademarks of Adobe Systems Incorporated. Corel® is a trademark or registered trademark of Corel Corporation or Corel Corporation Limited. Microsoft®, Windows®, and Windows NT® are U.S. registered trademarks of Microsoft Corporation. UNIX® is a registered trademark of The Open Group. ENERGY STAR® and the ENERGY STAR logo® are U.S. registered marks of the United States Environmental Protection Agency. Details on the proper use of the marks are explained in the "Guidelines for Proper use of the ENERGY STAR® Name and International Logo." Table of contents 1 Networking Set up the device and use it on the network .............................................................................2 To configure a network port-connected device configuration (direct mode or peer-to-peer printing) .......................................................................................................2 To configure a direct-connected shared device (client server printing) .............................3 To change from a direct-connected shared device to a network port-connected device configuration ........................................................................................................3 Using the embedded Web server or HP Toolbox .....................................................................4 Set my network password .........................................................................................................5 Using the printer control panel ..................................................................................................6 Network configuration page ................................................................................................ 6 Configuration page .............................................................................................................6 IP configuration ...................................................................................................................6 Link speed and duplex settings ..........................................................................................7 Supported network protocols ....................................................................................................8 TCP/IP configuration ...............................................................................................................10 Server-based, AutoIP, and manual TCP/IP configuration ................................................10 Server-based TCP/IP configuration ..................................................................................10 Default IP address configuration (AutoIP) ........................................................................10 TCP/IP configuration tools ................................................................................................ 1 1 Using BOOTP ..........................................................................................................................12 Why use BOOTP? ............................................................................................................12 BOOTP on UNIX ...............................................................................................................12 Using DHCP ............................................................................................................................ 5 1 UNIX systems ................................................................................................................... 5 1 Windows systems ............................................................................................................. 5 1 NetWare systems .............................................................................................................18 To discontinue DHCP configuration .................................................................................18 Configuring for LPD printing ....................................................................................................19 Introduction ....................................................................................................................... 9 1 LPD setup overview ..........................................................................................................20 LPD on UNIX systems ...................................................................................................... 1 2 LPD on Windows NT/2000 systems .................................................................................23 LPD on Windows XP systems ..........................................................................................26 LPD on Mac OS systems .................................................................................................28 TCP/IP......................................................................................................................................30 Introduction........................................................................................................................ 0 3 IP address..........................................................................................................................30 Configuring IP parameters.................................................................................................32 Subnets..............................................................................................................................33 Gateways........................................................................................................................... 3 3 Troubleshooting.......................................................................................................................35 Verifying that the printer is on and online..........................................................................35 ENWW Table of contents v Resolving communication problems with the network......................................................35 Index vi ENWW 1 Networking This section provides information about using your printer on a network. NOTE Set up the device and use it on the network Using the embedded Web server or HP Toolbox Set my network password Using the printer control panel Supported network protocols TCP/IP configuration Using BOOTP Using DHCP Configuring for LPD printing TCP/IP Troubleshooting Configuring TCP/IP settings are complicated and should only be performed by experienced network administrators. BOOTP will require a (PC, Unix, Linux, and so on.) server to configure specific TCP/IP settings for the product. DHCP will also require a server, but the TCP/IP settings will not be fixed for the device. Finally, the manual method to configure specific TCP/IP settings can be done from the control panel or the embedded Web server. For additional help or network configuration, contact your network provider. ENWW 1 Set up the device and use it on the network Hewlett-Packard recommends that you use the HP software installer on the CD-ROMs that came with the device to set up printer drivers for the following network setups. To configure a network port-connected device configuration (direct mode or peer-to-peer printing) In this configuration, the device is connected directly to the network, and all computers on the network print directly to the device. NOTE This mode is the recommended network configuration for the device. 1. Connect the device directly to the network by inserting a network cable into the device network port. 2. At the device, use the control panel to print a Configuration page. 3. Insert the device CD-ROM into your computer. If you have already set up your device, click Install Software to start the software installer. If the software installer does not start, navigate to the hpsetup.exe file on the CD-ROM and double-click the file. 4. Click Install HP Color LaserJet Software. 5. On the Welcome screen, click Next. 6. On the Installer updates screen, click Yes to search for installer updates on the Web. 7. For Windows 2000/XP, on the Installation Options screen, choose the installation option. Hewlett-Packard recommends a typical installation, if your system supports it. 8. On the License Agreement screen, read the license agreement, indicate that you accept the terms, and then click Next. 9. For Windows 2000/XP, on the HP Extended Capabilities screen, choose whether you want extended capabilities, and then click Next. 10. On the Destination Folder screen, choose the destination folder, and then click Next. 11. On the Ready to Install screen, click Next to begin installation. NOTE If you want to change your settings, instead of clicking Next, click Back to return to previous screens, and then change the settings. 12. On the Connection Type screen, select Through the network, and then click Next. 13. On the Identify Printer screen, identify the device either by searching or by specifying a hardware or IP address, which is listed on the Configuration page you printed earlier. In most cases an IP address is assigned, but you can change it if you want by clicking Specify the printer by Address on the Identify Printer screen. Click Next. 14. Allow the installation process to complete. 2 Chapter 1 Networking ENWW To configure a direct-connected shared device (client server printing) In this configuration, the device is connected to a computer through a USB cable, the computer is connected to the network, and the device is shared with other computers on the network. 1. Insert the device CD-ROM into your computer. If you have already set up your device, click Install Software to start the software installer. If the software installer does not start, navigate to the hpsetup.exe file on the CD-ROM and double-click the file. 2. Click Install HP Color LaserJet Software. 3. On the Welcome screen, click Next. 4. On the Installer updates screen, click Yes to search for installer updates on the Web. 5. For Windows 2000, on the Installation Options screen, choose the installation option. Hewlett-Packard recommends a typical installation, if your system supports it. 6. On the License Agreement screen, read the license agreement, indicate that you accept the terms, and then click Next. 7. For Windows 2000, on the HP Extended Capabilities screen, choose whether you want extended capabilities, and then click Next. 8. On the Destination Folder screen, choose the destination folder, and then click Next. 9. On the Ready to Install screen, click Next to begin installation. NOTE If you want to change your settings, instead of clicking Next, click Back to return to previous screens, and then change the settings. 10. On the Connection Type screen, select Directly to this computer, and then click Next. 11. Connect the USB cable. 12. Allow the installation process to complete. 13. On the Windows taskbar, click Start, click Settings, and then click Printers. In Windows XP, click Start, click Control Panel, and then double-click Printers and Faxes. 14. In the dialog box, right-click the device, and then click Sharing. 15. Select Share this printer, type the printer name if necessary, and then click OK. To change from a direct-connected shared device to a network port-connected device configuration To change from a direct connection to a network configuration, complete the following steps. 1. Uninstall the printer driver for the direct connect device. 2. Install the driver as a network configuration by using the steps in To configure a network port-connected device configuration (direct mode or peer-to-peer printing). ENWW Set up the device and use it on the network 3 Using the embedded Web server or HP Toolbox You can use the embedded Web server (EWS) or HP Toolbox to view or change your IP configuration settings. To access the embedded Web server, type the IP address for the device in the address line of the browser. You can view HP Toolbox when the device is directly connected to your computer or when it is connected to the network. You must perform a complete software installation to use HP Toolbox. Open HP Toolbox in one of these ways: In the Windows system tray, double-click the HP Toolbox Device Status and Alerts icon. On the Windows Start menu, click Programs (or All Programs in Windows XP), click HP, click HP Color LaserJet 2820/2830/2840, and then click HP Toolbox. In HP Toolbox, click Device Settings, and then click the Network Settings tab. From the Networking tab (EWS) or the Network Settings tab (HP Toolbox), you can change the following configurations: NOTE Host Name Manual IP Address Manual Subnet Mask Manual Default Gateway Changing the network configuration may require you to change the browser URL before you can communicate with the printer again. The printer will be unavailable for a few seconds while the network resets. 4 Chapter 1 Networking ENWW Set my network password Use HP Toolbox to set a network password. 1. Open HP Toolbox and click Device Settings. 2. Click the Network Settings tab. NOTE If a password has been set for the device previously, you will be prompted to type the password. Type the password, and then click Apply. 3. Click Password. 4. In the Password box, type the password you want to set, and then in the Confirm password box, type the same password again to confirm your choice. 5. Click Apply to save the password. ENWW Set my network password 5 Using the printer control panel The HP Color LaserJet 2820/2830/2840 all-in-one allows you to set up an IP address automatically using BOOTP or DHCP. For more information, see Default IP address configuration (AutoIP). Network configuration page The Network configuration page lists the current settings and properties of the device. To print the Network configuration page from the device, complete the following steps. 1. On the control panel menu, press MENU. 2. Use the < or the > button to select Reports, and then press ENTER. 3. Use the < or the > button to select Network Report, and then press ENTER. Configuration page The Configuration page lists the current settings and properties of the device. You can print a Configuration page from the device or HP Toolbox. To print the Configuration page from the device, complete the following steps. 1. On the control panel menu, press MENU. 2. Use the < or the > button to select Reports, and then press ENTER. 3. Use the < or the > button to select Config report, and then press ENTER. A second page also prints. On that page, the Fax Settings and Imaging Settings sections provide details about the device fax settings (HP Color LaserJet 2830/2840 all-in-one models only) and memory card settings (HP Color LaserJet 2840 all-in-one only). IP configuration You can configure the IP address manually or automatically. Manual configuration 1. On the control panel menu, press MENU. 2. Use the < or the > button to select Network config, and then press ENTER. 3. Use the < or the > button to select TCP/IP config, and then press ENTER. 4. Use the < or the > button to select Manual, and then press ENTER. 5. Use the alphanumeric keypad to type the IP address, and then press ENTER. 6. If the IP address shown on the control-panel display is correct, press ENTER, and then repeat step 5 for the subnet mask and default gateway settings. If the IP address is incorrect, use the < or the > button to select NO, and then press ENTER. Repeat step 5 with the correct IP address, and then repeat step 5 for the subnet mask and default gateway settings. 6 Chapter 1 Networking ENWW Automatic configuration 1. On the control panel menu, press MENU. 2. Use the < or the > button to select Network config, and then press ENTER. 3. Use the < or the > button to select TCP/IP config, and then press ENTER. 4. Use the < or the > button to select Automatic, and then press ENTER. It may take several minutes before the automatic IP address is ready for use. NOTE If you want to disable or enable specific automatic IP modes (such as BOOTP, DHCP, or AutoIP), these settings can be changed by using the embedded Web server or HP Toolbox only. Link speed and duplex settings NOTE Incorrect changes to the link speed and duplex settings might prevent the printer from communicating with other network devices. For most situations, the printer should be left in automatic mode. Also note that changes will cause the printer to power cycle. Changes should only be made while the printer is idle. 1. On the control panel menu, press MENU. 2. Use the < or the > button to select Network config, and then press ENTER. 3. Use the < or the > button to select Link Speed, and then press ENTER. 4. Use the < or the > button to select one of the following settings. NOTE 10T Full 10T Half 100T Full 100T Half The setting must match with the network device to which you are connecting (a network hub, switch, gateway, router, or computer). 5. Press ENTER. The printer will power cycle. ENWW Using the printer control panel 7 Supported network protocols The HP Color LaserJet 2820/2830/2840 all-in-one supports the TCP/IP network protocol. It is the most widely used and accepted networking protocol. Many networking services utilize this protocol. The following table lists the networking services/protocols that are supported on the HP Color LaserJet 2820/2830/2840 all-in-one. The following operating systems support network printing: Windows 98 SE Windows Me Windows 2000 Windows XP Macintosh OS X v10.2 and later Printing Service name port9100 (Direct Mode) Line printer daemon (LPD) Description Printing service Printing service Network device discovery Service name SLP (Service Location Protocol) Description Device Discovery Protocol, used to help find and configure network devices. Used primarily by Microsoft based applications. Device Discovery Protocol, used to help find and configure network devices. Used primarily by Apple Macintosh based Applications. mDNS (multicast Domain Name Service commonly referred to as Rendezvous) Messaging and management Service name HTTP (Hyper Text Transfer Protocol) EWS (embedded Web server) SNMP (Simple Network Management Protocol) Description Allows web browsers to communicate with embedded Web server. Allows a user to manage the device through a web browser. Used by network applications for device management. SNMP v1 and standard MIB-II (Management Information Base) objects are supported. 8 Chapter 1 Networking ENWW IP addressing Service name DHCP (Dynamic Host Configuration Protocol) Description For Automatic IP address assignment. DHCP server provides device with IP address. Generally requires no user intervention for printer to obtain IP address from a DHCP server. For Automatic IP address assignment. BOOTP server provides device with IP address. Requires administrator to input devices MAC hardware address on BOOTP server in order for printer to obtain an IP address from that server. For Automatic IP address assignment. If neither a DHCP server nor a BOOTP server is present, this service allows the printer to generate a unique IP address. BOOTP (Bootstrap Protocol) Auto IP ENWW Supported network protocols 9 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 device. For example, network scanning, network faxing, or 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 Toolbox 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. Server-based TCP/IP configuration In its factory-default state, the printer will first try BOOTP. If this fails it will then try DHCP. If this fails, it will then obtain an IP address via AutoIP. In addition, a default IP address will not be assigned if a network cable is not attached to the printer. Default IP address configuration (AutoIP) A default IP address will be assigned via the AutoIP protocol if the server based methods fail. When DHCP or BOOTP fails to obtain an IP address, the printer uses a link-local addressing technique to assign a unique IP address. Link-local addressing may be referenced as AutoIP. The IP address assigned will be in the range of 169.254.1.0 to 169.254.254.255 (commonly referenced as 169.254/16), and should be valid. However, it can be further modified for your network using supported TCP/IP configuration tools if necessary. With link-local addresses, subnetting is not used. The subnet mask will be 255.255.0.0, and cannot be changed. Link-local addresses will not route off the local link, and access to or from the Internet will not be available. The default gateway address will be the same as the link-local address. If a duplicate address is sensed, the printer will automatically reassign its address, if necessary, in accordance with standard link-local addressing methods. The IP address configured on your printer may be determined by inspecting the network configuration page for the printer. Since it may take some time for the server-based protocols to time out, the AutoIP process can be sped up by disabling the BOOTP and DHCP services on the printer. This can be done via a Web browser. 10 Chapter 1 Networking ENWW TCP/IP configuration tools Depending on your printer and operating system, the printer can be configured with valid TCP/IP parameters for your network in the following ways: Using Software--You can use the HP Toolbox software, or you can use the device Embedded Web server by entering the IP address in your Web browser. BOOTP--You can download the data from a network-based server using BOOTP (Bootstrap Protocol) each time the printer is turned on. The BOOTP daemon, bootpd, must be running on a BOOTP server that is accessible by the printer. DHCP--You can use Dynamic Host Configuration Protocol (DHCP). This protocol is supported in HP-UX, Solaris, Red Hat Linux, SuSE Linux, Windows NT/2000/XP, NetWare and Mac systems. (Refer to your network operating system manuals to verify that your server operating system supports DHCP.) NOTE Linux and UNIX systems: For more information, see the BOOTPD man page. On HP-UX systems, a sample DHCP configuration file (dhcptab) may be located in the /etc directory. Since HP-UX presently does not provide Dynamic Domain Name Services (DDNS) for its DHCP implementations, HP recommends that you set all printer lease durations to infinite. This ensures that printer IP addresses remain static until such time as Dynamic Domain Name Services are provided. ENWW TCP/IP configuration 11 Using BOOTP BOOTP (Bootstrap Protocol) provides a convenient way to automatically configure the printer for TCP/IP network operation. When powered on, printer sends a BOOTP request message onto the network. A properly configured BOOTP server on the network will respond with a message that contains basic network configuration data for printer. The BOOTP server's response may also identify a file that contains extended configuration data for the print server. The TFTP protocol (which is not a supported feature for this printer) is required to download this. Thus, the TFTP configuration file that may be located on the BOOTP server, or a separate TFTP server will be ignored. BOOTP servers are typically UNIX or Linux systems. Windows NT/2000/XP and NetWare servers can respond to BOOTP requests. Windows NT/2000/XP servers are configured through Microsoft DHCP services. For setup of NetWare BOOTP servers, refer to your NetWare documentation. NOTE If the printer and the BOOTP/DHCP server are located on different subnets, IP configuration may fail unless the routing device supports "BOOTP Relay" (allows the transfer of BOOTP requests between subnets). Why use BOOTP? Using BOOTP to download configuration data has the following benefits: NOTE Enhanced configuration control of the printer. Configuration by other methods, such as a printer control panel, are limited to select parameters. Ease of configuration management. Network configuration parameters for the entire network can be in one location. Ease of printer configuration. Complete network configuration can be automatically downloaded each time the printer is powered on. BOOTP operation is similar to DHCP, but the resulting IP parameters will be the same when powered off/on. In DHCP, IP configuration parameters are leased and may change over time. When in its factory-default state and powered on, the printer will attempt to automatically configure itself using several dynamic methods, one of which is BOOTP. BOOTP on UNIX This section describes how to configure the print server using BOOTP (Bootstrap Protocol) services on UNIX servers. BOOTP is used to download network configuration data from a server to the printer over the network. Systems that use Network Information Service (NIS) If your system uses NIS, you may need to rebuild the NIS map with the BOOTP service before performing the BOOTP configuration steps. Refer to your system documentation. 12 Chapter 1 Networking ENWW Configuring the BOOTP server For the printer to obtain its configuration data over the network, the BOOTP server must be set up with the appropriate configuration files. BOOTP is used by the printer to obtain configuration data located in the /etc/bootptab file on a BOOTP server. When the printer is powered on, it broadcasts a BOOTP request that contains its MAC (hardware) address. A BOOTP server daemon searches the /etc/bootptab file for a matching MAC address, and if successful, sends the corresponding configuration data to the printer as a BOOTP reply. The configuration data in the /etc/bootptab file must be properly entered. The BOOTP reply may contain the name of a configuration file containing optional enhanced configuration parameters. Again, this file will be ignored by the printer. NOTE NOTE HP recommends that the BOOTP server be located on the same subnet as the printers it serves. BOOTP broadcast packets may not be forwarded by routers unless the routers are properly configured. Bootptab file entries An example of a /etc/bootptab file entry for a networked printer is shown below. Note that the configuration data contains tags to identify the various printer parameters and their settings. Entries and tags supported are listed in the Tags supported in a BOOTP/DHCP boot file table. picasso:\ :hn:\ :ht=ether:\ :vm=rfc1048:\ :ha=0001E6123456:\ :ip=192.168.40.39:\ :sm=255.255.255.0:\ :gw=192.168.40.1:\ :lg=192.168.40.3:\ :T144="hpnp/picasso.cfg": Tags supported in a BOOTP/DHCP boot file Option Nodename Description The name of the peripheral. This name identifies an entry point to a list of parameters for a specific peripheral. Nodename must be the first field in an entry. (In the example above, nodename is "picasso".) The hardware type tag. For the printer, set this to ether for Ethernet. This tag must precede the ha tag. ht ENWW Using BOOTP 13 Tags supported in a BOOTP/DHCP boot file (continued) Option vm ha Description The BOOTP report format tag (required). Set this parameter to rfc1048. The hardware address tag. The hardware (MAC) address is the link-level, or station address of the printer. It can be found on the printer network configuration page as the HARDWARE ADDRESS. The IP address tag (required). This address will be the printer's IP address. The subnet mask tag. The subnet mask will be used by the printer to identify the portions of an IP address that specify the network/subnetwork number and the host address. The gateway IP address tag. This address identifies the IP address of the default gateway (router) that the printer will use for communications with other subnets. DNS (Domain Name System) server's IP address tag. Only a single name server can be specified. The syslog server's IP address tag. It specifies the server that the printer sends syslog messages to. The host name tag. This tag does not take a value but causes the BOOTP daemon to download the host name to the printer. The host name will be printed on the printer network configuration page, or returned an SNMP sysName request by a network application. Domain name tag. Specifies the domain name for the printer (for example, support.hp.com). It does not include the host name; it is not the Fully Qualified Domain Name (such as printer1.support.hp.com). DHCP T1 timeout, specifying the DHCP lease renewal time (seconds). DHCP T2 timeout, specifying the DHCP lease rebind time (seconds). ip sm gw ds lg hn dn tr tv NOTE A colon (:) indicates the end of a field, and a backslash (\) indicates that the entry is continued on the next line. Spaces are not allowed between the characters on a line. Names, such as host names, must begin with a letter and can contain only letters, numbers, periods (for domain names only), or hyphens. The underline character (_) is not allowed. Refer to your system documentation or online help for more information. 14 Chapter 1 Networking ENWW Using DHCP Dynamic Host Configuration Protocol (DHCP, RFC 2131/2132) is one of several auto configuration mechanisms that the printer uses. If you have a DHCP server on your network, the printer automatically obtains its IP address from that server. NOTE NOTE DHCP services must be available on the server. Refer to your system documentation or online help to install or enable DHCP services. If the printer and BOOTP/DHCP server are located on different subnets, IP configuration may fail unless the routing device allows the transfer of DHCP requests between subnets. UNIX systems For more information on setting up DHCP on UNIX systems, see the BOOTPD man page. On HP-UX systems, a sample DHCP configuration file (dhcptab) may be located in the /etc directory. Since HP-UX presently does not provide Dynamic Domain Name Services (DDNS) for its DHCP implementations, HP recommends that you set all print server lease durations to infinite. This ensures that print server IP addresses remain static until Dynamic Domain Name Services are provided. Windows systems The printer supports IP configuration from a Windows NT/2000/XP DHCP server. This section describes how to set up a pool, or "scope," of IP addresses that the Windows server can assign or lease to any requester. When configured for BOOTP or DHCP operation and powered on, the printer automatically sends a BOOTP or DHCP request for its IP configuration. If properly set up, a Windows DHCP server will respond with the print server's IP configuration data. NOTE NOTE This information is provided as an overview. For specific information or for additional support, see the information supplied with your DHCP server software. To avoid problems resulting from IP addresses that change, HP recommends that all printers be assigned IP addresses with infinite leases or reserved IP addresses. Windows NT 4.0 Server To set up a DHCP scope on a Windows NT 4.0 server, perform the following steps: 1. At the Windows NT server, open the Program Manager window and double-click the Network Administrator icon. 2. Double-click the DHCP Manager icon to open this window. 3. Select Server and select Server Add. 4. Type the server IP address, then click OK to return to the DHCP Manager window. 5. In the list of DHCP servers, click on the server you have just added, then select Scope and select Create. ENWW Using DHCP 15 6. Select Set up the IP Address Pool. In the IP Address Pool section, set up the IP address range by typing the beginning IP address in the Start Address box and the ending IP address in the End Address box. Also type the subnet mask for the subnet to which the IP address pool applies. The starting and ending IP addresses define the end points of the address pool assigned to this scope. NOTE If desired, you can exclude ranges of IP addresses within a scope. 7. In the Lease Duration section, select Unlimited, then select OK. HP recommends that all printers be assigned infinite leases to avoid problems resulting from IP addresses that change. Be aware, however, that selecting an unlimited lease duration for the scope causes all clients in that scope to have infinite leases. If you want clients on your network to have finite leases, you can set the duration to a finite time, but you should configure all printers as reserved clients for the scope. 8. Skip this step if you have assigned unlimited leases in the previous step. Otherwise, select Scope and select Add Reservations to set up your printers as reserved clients. For each printer, perform the following steps in the Add Reserved Clients window to set up a reservation for that printer: a. Type the selected IP address. b. Obtain the MAC address or hardware address from the configuration page, and type this address in the Unique Identifier box. c. Type the client name (any name is acceptable). d. Select Add to add the reserved client. To delete a reservation, in the DHCP Manager window, select Scope and select Active Leases. In the Active Leases window, click on the reservation you want to delete and select Delete. 9. Select Close to return to the DHCP Manager window. 10. Skip this step if you are not planning to use WINS (Windows Internet Naming Service). Otherwise perform the following steps when configuring your DHCP server: a. From the DHCP Manager window, select DHCP Options and select one of the following: Scope--if you want Name Services only for the selected scope. Global--if you want Name Services for all scopes. b. Add the server to the Active Options list. From the DHCP Options window, select WINS/NBNS Servers (044) from the Unused Options list. Select Add, then select OK. A warning may appear requesting that you set the node type. You do this in step 10d. c. You must now provide the IP address of the WINS server by doing the following: Select Value, then Edit Array. From the IP Address Array Editor, select Remove to delete any undesired addresses previously set. Then type in the IP address of the WINS server and select Add. Once the address appears in the list of IP addresses, select OK. This returns you to the DHCP Options window. If the address you have just added appears in the list of IP addresses (near the bottom of the window) go to step 10d. Otherwise, repeat step 10c. 16 Chapter 1 Networking ENWW d. In the DHCP Options window, select WINS/NBT Node Type (046) from the Unused Options list. Select Add to add the node type to the Active Options list. In the Byte box, type 0x4 to indicate a mixed node, and select OK. 11. Click Close to exit to Program Manager. Windows 2000 Server To set up a DHCP scope on a Windows 2000 server, perform the following steps: 1. Run the Windows 2000 DHCP manager utility. Click Start, then select Settings and Control Panel. Open the Administrative Tools folder and run the DHCP utility. 2. In the DHCP window, locate and select your Windows 2000 server in the DHCP tree. If your server is not listed in the tree, select DHCP and click the Action menu to add the server. 3. After selecting your server in the DHCP tree, click the Action menu and select New Scope. This runs the Add New Scope Wizard. 4. In the Add New Scope Wizard, click Next. 5. Enter a Name and Description for this scope, then click Next. 6. Enter the range of IP addresses for this scope (beginning IP address and ending IP address). Also, enter the subnet mask. Then click Next. NOTE If subnetting is used, the subnet mask defines which portion of an IP address specifies the subnet and which portion specifies the client device. 7. If applicable, enter the range of IP addresses within the scope to be excluded by the server. Then click Next. 8. Set the IP address lease duration for your DHCP clients. Then click Next. HP recommends that all printers be assigned reserved IP addresses. This can be accomplished after you set up the scope (see step 11). 9. To configure DHCP options for this scope later, select No and then click Next. To configure DHCP options now, select Yes and click Next. a. If desired, specify the IP address of the router (or default gateway) to be used by clients. Then click Next. b. If desired, specify the Domain Name and DNS (Domain Name System) servers for clients. Click Next. c. If desired, specify the Domain Name and DNS (Domain Name System) servers for clients. Click Next. d. Select Yes to activate the DHCP options now, and click Next. 10. You have successfully set up the DHCP scope on this server. Click Finish to close the wizard. 11. Configure your printer with a reserved IP address within the DHCP scope: a. In the DHCP tree, open the folder for your scope and select Reservations. b. Click the Action menu and select New Reservation. ENWW Using DHCP 17 c. NOTE Enter the appropriate information in each field, including the reserved IP address for your printer. The MAC address for your printer is available on the printer's network configuration page. d. Under Supported types, select DHCP only, then click Add. NOTE Selecting Both or BOOTP only will result in a configuration through BOOTP due to the sequence in which the printer initiates configuration protocol requests. e. Specify another reserved client, or click Close. The reserved clients added will be displayed in the Reservations folder for this scope. 12. Close the DHCP manager utility. NetWare systems NetWare 5.x servers provide DHCP configuration services for network clients, including your HP printer. To set up DHCP services on a NetWare server, refer to Novell documentation and support. To discontinue DHCP configuration CAUTION Changes to an IP address on your printer may require updates to printer or system printing configurations for clients or servers. If you do not want your printer configured through DHCP, you must reconfigure the printer with a different configuration method. You can manually modify the TCP/IP parameters through a supported Web browser using the printer's embedded Web server, the printer's control panel, or HP Toolbox. If you change to BOOTP configuration, the DHCP-configured parameters are released and the TCP/IP protocol is initialized. If you change to Manual configuration, the DHCP-configured IP address is released and the user-specified IP parameters are used. Therefore, if you manually provide the IP address, you should also manually set all of the configuration parameters, such as subnet mask and default gateway. 18 Chapter 1 Networking ENWW Configuring for LPD printing Introduction The printer contains an LPD (Line Printer Daemon) Server to support LPD printing. This chapter describes how to configure the printer for use with various systems that support LPD printing. These instructions include: LPD on UNIX Systems NOTE Configuring BSD-based UNIX systems using LPD Configuring print queues using the SAM utility (HP-UX systems) LPD on Windows NT/2000 Systems LPD on Mac OS Systems For other systems not listed, refer to your operating system documentation and online help. Recent versions of Novell NetWare (NetWare 5.x with NDPS 2.1 or greater) support LPD printing. For setup instructions and support, refer to the documentation supplied with NetWare. Also, refer to the Technical Information Documentation (TID) on Novell's support Web site. About LPD Line printer daemon (LPD) refers to the protocol and programs associated with line-printer spooling services that may be installed on various TCP/IP systems. Some of the widely used systems which are supported by your printer using LPD include: Berkeley-based (BSD) UNIX systems HP-UX Solaris IBM AIX Linux Windows NT/2000/XP Mac OS The UNIX configuration examples in this section show the syntax for BSD-based UNIX systems. The syntax for your system may vary. See your system documentation for the correct syntax. NOTE The LPD functionality can be used with any host implementation of LPD that complies with the RFC 1179 document. The process for configuring printer spoolers, however, may differ. See your system documentation for information on configuring these systems. The LPD programs and protocol include the following: ENWW Configuring for LPD printing 19 LPD programs and protocols Program Name lpr lpq lprm lpc lpd Purpose of Program Queues jobs for printing. Displays print queues. Removes jobs from print queues. Controls print queues. Scans and prints the files if the specified printer is connected to the system. If the specified printer is connected to another system, this process forwards the files to an LPD process on the remote system where the files are to be printed. Requirements for configuring LPD Before you can use LPD printing, your printer must be properly connected to the network and have a valid IP address. This information is listed on the printer network configuration page. You must also have the following: An operating system that supports LPD printing. Superuser (root) or Administrator access to your system. The LAN hardware address (or station address) of the print server. This address is printed on the printer network configuration page and is of the form: HARDWARE ADDRESS: xxxxxxxxxxxx where x is a hexadecimal digit (for example, 0001E6123ABC). LPD setup overview The following steps are necessary to configure the printer for LPD printing: 1. Setting up IP parameters. 2. Setting up print queues. 3. Printing a test file. The following sections provide detailed descriptions for each step. Step 1. Setting up IP parameters TCP/IP configuration parameters (such as IP address, subnet mask, default gateway) can be configured on the printer in a variety of ways. These values can be configured manually, or they can be automatically downloaded using DHCP or BOOTP each time the printer is turned on. For more information, see Configuring IP parameters. 20 Chapter 1 Networking ENWW Step 2. Setting up print queues You must set up a print queue for each printer or printer personality (PCL or PostScript) that you use on the system. The printer supports only one type of queue (raw). Therefore, it does not matter what queue name is given as the printer will treat each one the same. The printer treats data from any source as the same and has no provisions for adding carriage returns, tagging binary Postscript data, special PJL sequences, user-defined strings, etc., to the job stream data. This printer also supports automatic PostScript binary mode stream detection, and thus it does not require (or allow) a special queue type for this service. Step 3. Printing a test file Print a test file by using the LPD commands or by using other methods provided for your OS. For instructions, see the information provided for your system. LPD on UNIX systems Configuring print queues for BSD-based systems Edit the /etc/printcap file to include the following entries: printer_name|short_printer_name:\ :lp=:\ :rm=node_name:\ :rp=remote_printer_name_argument:\ (this can be any queue name desired by the user) :lf=/usr/spool/lpd/error_log_filename:\ :sd=/usr/spool/lpd/printer_name: where printer_name identifies the printer to the user, node_name identifies the printer on the network, andremote_printer_name_argument is the print queue designation. For more information on printcap, see the printcap man page. Example: Printcap entry printers lj1_raw|raw1:\ :lp=:\ :rm=laserjet1:\ :rp=raw:\ :lf=/usr/spool/lpd/lj1_raw.log:\ :sd=/usr/spool/lpd/lj1_raw: Make sure your users know the printer names for the printers, since they must type those names on the command line for printing. Create the spooling directory by making the following entries. At the root directory, type: ENWW Configuring for LPD printing 21 mkdir /usr/spool/lpd cd /usr/spool/lpd mkdir printer_name_1 printer_name_2 chown daemon printer_name_1 printer_name_2 chgrp daemon printer_name_1 printer_name_2 chmod g+w printer_name_1 printer_name_2 where printer_name_1 and printer_name_2 refer to the printers to be spooled. You may spool several printers. The following example shows the command to create the spooling directories for printers used for printing. Example: Creating spooling directory mkdir /usr/spool/lpd cd /usr/spool/lpd mkdir lj1_raw lj1_raw chown daemon lj1_raw lj1_raw chgrp daemon lj1_raw lj1_raw chmod g+w lj1_raw lj1_raw Configuring print queues using SAM (HP-UX systems) On HP-UX systems you can use the SAM utility to configure remote print queues. Before you execute the SAM program, select an IP address for the printer and set up an entry for it in the /etc/hosts file on your system running HP-UX. 1. Start the SAM utility as a superuser. 2. Select Peripheral Devices from the Main menu. 3. Select Printers/Plotters from the Peripheral Devices menu. 4. Select Printers/Plotters from the Printers/Plotters menu. 5. Select Add a Remote Printer from the Actions list, then select a printer name. Examples: my_printer or printer1 6. Select a remote system name. Example: hplj1 (node name of the printer) 7. Select a remote printer name, and then type the queue name. (The name can be anything, such as raw for example.) 8. Check for a remote printer on a BSD system. You must type Y. 9. Click OK at the bottom of the menu. If the configuration is successful, the program prints the message: The printer has been added and is ready to accept print requests. 22 Chapter 1 Networking ENWW 10. Click OK and select Exit from the List menu. 11. Select Exit Sam. NOTE By default, the lpsched is not running. Make sure you turn the scheduler on when you set up your print queues. Printing a test file To verify that the printer and print server connections are correct, print a test file. 1. At the UNIX system prompt type: lpr -Pprinter_name file_name where printer_name is the designated printer andfile_name refers to the file to be printed. Examples (for BSD-based systems): PostScript File: lpr -Praw1 psfile.ps For HP-UX systems, substitute lp -d for lpr -P. 2. To get print status, type the following at the UNIX prompt: lpq -Pprinter_name where printer_name is the designated printer. Examples (for BSD-based systems): lpq -Praw1 For HP-UX systems, substitute lpstat for lpq -P to get print status. This completes the process for configuring the printer to use LPD. LPD on Windows NT/2000 systems This section describes how to configure Windows NT/2000 networks to use the printer LPD (Line Printer Daemon) services. The process consists of two parts: Installing TCP/IP software (if not already installed). Configuring a network LPD printer. Installing TCP/IP software (Windows NT) This procedure lets you check whether you have TCP/IP installed on your Windows NT system, and to install the software if necessary. ENWW Configuring for LPD printing 23 NOTE You may need your Windows system distribution files or CD-ROMs to install TCP/IP components. 1. To check whether you have Microsoft TCP/IP Printing protocol and TCP/IP printing support: Windows 2000--Click Start, Settings, Control Panel. Then double-click the Network and Dial-up Connections folder. Double-click the Local Area Connection for your network and click Properties. If Internet Protocol (TCP/IP) is listed and enabled in the list of components used by this connection, the necessary software is already installed. (See Configuring a network printer for Windows 2000 systems.) If not, go to step 2. NT 4.0--Click Start, Settings, Control Panel. Then double-click the Network option to display the Network dialog box. If TCP/IP Protocol is listed in the Protocols tab, and Microsoft TCP/IP Printing is listed in the Services tab, you have already installed the necessary software. (See Configuring a network printer for Windows NT 4.0 systems.) If not, go to step 2. 2. If you have not previously installed the software: Windows 2000--In the Local Area Connection Properties window, click Install. In the Select Network Component Type window, select Protocol and click Add to add the Internet Protocol (TCP/IP). Follow the instructions on the screen. NT 4.0--Click the Add button for each tab and install the TCP/IP Protocol and the Microsoft TCP/IP Printing service. Follow the instructions on the screen. When prompted, type the full path to the Windows NT distribution files (you may need your Windows NT workstation or server CD-ROM). 3. Enter TCP/IP configuration values for the computer: Windows 2000--On the General tab in the Local Area Connection Properties window, select Internet Protocol (TCP/IP) and click Properties. NT 4.0--You may be automatically prompted for TCP/IP configuration values. If not, select the Protocols tab in the Networks window and select TCP/IP Protocol. Then click Properties. If you are configuring a Windows server, type the IP address, default gateway address, and subnet mask in the appropriate spaces. If you are configuring a client, check with your network administrator to learn whether you should enable automatic TCP/IP configuration or whether you should type a static IP address, default gateway address, and subnet mask in the appropriate spaces. 4. Click OK to exit. 5. If prompted, exit Windows and restart your computer for the changes to take effect. Configuring a network printer for Windows 2000 systems Set up the default printer by performing the following steps. 1. Verify that the Print Services for Unix is installed (required for LPR port availability): 24 Chapter 1 Networking ENWW a. Click Start, Setup, and Control Panel. Double-click the Network and Dial-up Connections folder. b. Click the Advanced menu and select Optional Networking Components. c. Select and enable Other Network File and Print Services. d. Click Details, and verify that Print Services for Unix is enabled. If not, enable it. e. Click OK, and then Next. 2. Open the Printers folder (from the Desktop, click Start, Settings, and Printers). 3. Double-click Add Printer. From the Add Printer Wizard welcome screen, click Next. 4. Select Local printer, and disable automatic detection for Plug and Play printer installation. Click Next. 5. Select Create a new port, and select LPR Port. Click Next. 6. In the Add LPR compatible printer window: a. Enter the DNS name or IP address of the printer. b. For the name of the printer or print queue on the printer, enter (in lowercase) any queue name desired. (Queue names have no effect on output.) c. Then click OK. 7. Select the manufacturer and printer model. (If necessary, click Have Disk and follow the instructions to install the printer driver.) Click Next. 8. Choose to keep the existing driver, if prompted. Click Next. 9. Enter a printer name, and choose whether this printer will be the default printer. Click Next. 10. Choose whether this printer will be available to other computers. If shared, enter a share name that identifies the printer to other users. Click Next. 11. If desired, enter a location and other information for this printer. Click Next. 12. Choose whether to print a test page, and click Next. 13. Click Finish to close the wizard. Configuring a network printer for Windows NT 4.0 systems At the Windows NT 4.0 system, set up the default printer by performing the following steps. 1. Click Start, select Settings, and click Printers. The Printers window opens. 2. Double-click Add Printer. 3. Select My Computer, then click Next. 4. Click Add Port. 5. Select LPR Port, and click New Port. 6. In the Name or address of server providing lpd box, type the IP address or DNS name of the printer. NOTE NT clients can enter the IP address or name of the NT server that is configured for LPD printing. ENWW Configuring for LPD printing 25 7. In the Name of printer or print queue on that server box, type (in lowercase) the name of the print queue desired. Then click OK. 8. Ensure that the port is selected in the Add Printer list of the available ports, then click Next. 9. Follow the remaining instructions on the screen to complete the configuration. Verifying the configuration From within Windows NT, print a file from any application. If the file prints correctly, the configuration was successful. If the print job is not successful, try printing directly from DOS using the following syntax: lpr -S -P filename where ipaddress is the IP address of the print server, queuename is the name of choice (such as "raw"), and filename is the file you wish to print. If the file prints correctly, the configuration was successful. If the file does not print, or prints incorrectly, see Troubleshooting. Printing from Windows clients If the LPD printer on the NT/2000 server is shared, Windows clients can connect to the printer on the NT/2000 server using the Windows Add Printer utility in the Printers folder. LPD on Windows XP systems This section describes how to configure Windows XP networks to use the printer LPD (Line Printer Daemon) services. The process consists of two parts: Adding Windows optional networking components Configuring a network LPD printer Adding Windows optional networking components 1. Click Start. 2. Click Control Panel. 3. Click Network and Internet Connections. 4. Click the Network Connections icon. 5. Select Advanced in the top menu bar. In the drop-down list, select Optional Networking Components. 6. Select Other Network File and Print Services and click Next. (If you select Details before selecting Next, you will see "Print Services for UNIX (R)" as a component of Other Network File and Print Services.) The files being loaded will be shown. 7. Close the Network Connections window. LPR port is now an option in the Properties of a printer under Ports, Add Port. 26 Chapter 1 Networking ENWW Configuring a network LPD printer Adding a new LPD printer 1. Open the Printers folder (from the desktop, click Start, Printers and Faxes). 2. Click Add Printer. On the Add Printer Wizard welcome screen, click Next. 3. Select Local printer, then uncheck the automatic detection for Plug and Play printer installation. Click Next. 4. Select Create a new port, and select LPR Port from the pull-down menu. Click Next. 5. In the Add LPR Compatible Printer window, do the following: a. Type the Domain Name System (DNS) name or Internet protocol (IP) address of the printer. b. Type (in lowercase) the name of the print queue. (The name you use is not important.) c. Click OK. 6. Select the manufacturer and printer model. (If necessary, click Have Disk and follow the instructions to install the printer driver.) Click Next. 7. Click Yes to keep the existing driver, if prompted. Click Next. 8. Type a printer name and (if desired) click this printer as default (if desired). Click Next. 9. Select whether to share this printer with other network computers (for example, if your system is a printer server). If shared, type a share name to identify the printer to other users. Click Next. 10. If desired, enter a location and other information for this printer. Click Next. 11. Click Yes to print a test page, then click Next. 12. Click Finish to close the wizard. Creating an LPR port for an installed printer 1. Click Start, Printers and Faxes. 2. Right-click the Printer icon, and select Properties. 3. Select the Ports tab and Add Port. 4. Select LPR Port from the Printer Ports dialog box, and select New Port. 5. In the field labeled Name or address of server providing lpd, enter the DNS name or IP address of the printer. 6. In the dialog box labeled Name of printer or print queue on that server, (in lowercase) type the name of the print queue for the printer (for example: raw, anything, etc.). 7. Select OK. 8. Select Close and OK to close the Properties box. ENWW Configuring for LPD printing 27 LPD on Mac OS systems Mac OS 9 and earlier versions The following explains how to configure LPD printers using LaserWriter driver 8.5.1 or later versions to print using LPR. You may use the Desktop Printer Utility to setup your Mac OS-based computer for LPR printing. The implementation of LPR printing by the LaserWriter 8 driver is compliant with RFC 1179 and should work with any RFC 1179-compliant device. IP printing in LaserWriter 8.5.1 is not available on Mac OS 8.0, but is available on Mac OS 8.1. IP printing is also available when the LaserWriter 8.5.1 printing software is installed on computers running Mac OS 7.5 through Mac OS 7.6.1. You should also have installed the HP Mac printer support software provided before configuring for LPD so that the proper PPD file is available Configuring IP printing 1. Launch the Desktop Printer Utility. 2. Select Printer (LPR) and click OK. Note that the term LPR is synonymous with LPD. 3. In the PostScript Printer Description (PPD) File section, click on Change and select the PPD for your printer. 4. In the LPR section, click on Change to bring up the Internet Printer window. 5. Enter the printer IP address or domain name for Printer Address. 6. Enter the queue name, if used. Otherwise, leave it blank. 7. Click on Verify to verify that the printer was found. 8. Click OK. 9. Click the File menu and select Save. 10. Enter a name and location for the desktop printer icon and click OK. The default name is the printer IP address, and the default location is on the desktop. 11. Click Quit. Mac OS 10.2x and later versions 1. Open the Printer List window from Printer Center (Mac OS X 10.2.8 or earlier) or the Printer Setup Utility (Mac OS X 10.3 Panther or later). 2. Click the Add Printer button. 3. Choose LPR Printers using IP from the pop-up menu. 4. Enter the printer IP address or DNS name. 5. Leave the checkbox Use Default Queue on Server selected. 6. You can select your printer from the Printer Model menu (in essence you are selecting the printer PPD file previously installed). 7. Select your printer from the list. 28 Chapter 1 Networking ENWW 8. Click Add. 9. Close the Printer List window. ENWW Configuring for LPD printing 29 TCP/IP Introduction This section is intended to provide information to help you gain a basic understanding of 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. TCP/IP is rapidly becoming the most used set of protocols. The main reason this is happening is the fact that the Internet is based on TCP/IP. If you have a network that you wish to connect to the Internet, you must be using TCP/IP to communicate. Internet Protocol (IP) When information is sent across the network, the data is broken down into small packets. Each packet is sent independently of one another. 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 is connectionless. When IP packets are sent, there is no guarantee that they arrive at their destination in the proper sequence. That task can be performed by higher level protocols and applications thereby allowing IP communications to be efficient. Each node or device that will communicate directly onto the network requires an IP address. Transmission Control Protocol (TCP) TCP handles breaking the data into packets and recombining the packets 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 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. User Datagram Protocol (UDP) UDP provides similar services to TCP. However, UDP does not acknowledge data receipt and supports request/reply transactions with no added reliability or guarantee of delivery. UDP is used when acknowledgment and reliability are not required, such as during a "discovery broadcast." 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 located on that network. Each IP address can be divided into two separate parts: the network portion and the host portion. 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). 30 Chapter 1 Networking ENWW 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. IP address: network portion Network addresses are managed by an organization in Norfolk, Virginia, recognized as InterNIC. InterNIC has been contracted by the National Science Foundation to manage the Internet addresses and domains. Network addresses are distributed to organizations that are in turn responsible for making sure all attached devices or hosts on the network are properly numbered. For more information on the network portion of an IP address, see IP address structure and class and Subnets in this section. IP address: host portion Host addresses numerically identify specific network interfaces on an IP network. Usually a host has only one network interface; thus, only one IP address. Because no two devices can share the same number at the same time, administrators typically maintain address tables to assure correct assignment of addresses in the host network. IP address structure and class An IP address is comprised of 32 bits of information and divided into 4 sections containing 1 byte each section or 4 bytes total: xxx.xxx.xxx.xxx For efficiency in routing, networks were broken down into three classes, so routing can begin simply by identifying the leading byte of information in the IP address. The three IP addresses that InterNIC assigns are class A, B, and C. The network class determines what each of the four IP address sections identify as shown below: IP address class format Class A B C First Address Byte xxx. Network. Network. Network. Second Address Byte xxx. Host. Network. Network. Third Address Byte xxx. Host. Host. Network. Fourth Address Byte xxx Host. Host. Host. As illustrated in Network class characteristics, each network class differs by the leading bit identifier, the address range, the number of each type available, and the maximum number of hosts each class allows. ENWW TCP/IP 31 Network class characteristics Class Network Class Characteristics Address Range Maximum Number of Networks in the Class 126. 16,382. Over 2 Million. Maximum Hosts in the Network A B C 0 10. 110. 0.0.0.0 to 127.255.255.255. 128.0.0.0 to 191.255.255.255. 192.0.0.0 to 223.255.255.255. Over 16 Million. 65,534. 254. Configuring IP parameters TCP/IP configuration parameters (such as IP address, subnet mask, default gateway) can be configured on the printer in a variety of ways. These values can be configured manually (for example, through 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 printer is turned on. When powered on, a new printer 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 printer 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 printer may be determined by inspecting the printer Configuration 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 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 (printer hardware address). The server answers with a boot reply packet containing the information the device needs to configure. 32 Chapter 1 Networking ENWW 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. For example, see Example: Subnet mask 255.255.0.0 applied to class A network. Example: Subnet mask 255.255.0.0 applied to class A network Class A Network Address Network 15 Subnet Mask IP Address fields with Subnet Mask applied Example of a node's IP Address on Subnet 1 Example of a node's IP Address on Subnet 254 255 Network 15 15 xxx 255 Subnet 1 254 xxx 0 Host 25 64 xxx 0 Host 7 2 As illustrated in 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. ENWW TCP/IP 33 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). 34 Chapter 1 Networking ENWW Troubleshooting Verifying that the printer is on and online Check the following items to make sure the printer is ready to print. 1. Is the printer plugged in and turned on? Make sure that the printer is plugged in and turned on. If the problem persists, you might have a defective power cable, power source, or printer. 2. Is the printer READY light on? If the light is blinking, you might need to wait until the current job is completed. 3. Is the printer control panel display blank? Make sure the printer is turned on. Make sure the printer is installed correctly. See your printer documentation for a complete list of control panel messages and corrective actions. 4. Does a message other than Ready appear on the printer control panel display? Resolving communication problems with the network Check the following items to verify that the printer is communicating with the network. This information assumes you have already printed a Network configuration page (see Network configuration page). 1. Are there any physical connection problems between the workstation or file server and the printer? Verify that the network cabling, connections, and router configurations are correct. Verify that the network cable lengths meet network specifications. 2. Are your network cables connected properly? Make sure that the printer is attached to the network using the appropriate port and cable. Check each cable connection to make sure it is secure and in the right place. If the problem continues, try a different cable or ports on the hub or transceiver. The amber activity light and the green link status light next to the port connection on the back of the printer should be lit. 3. Are the link speed and duplex settings set correctly? Hewlett-Packard recommends leaving this setting in automatic mode (the default setting). See Link speed and duplex settings. ENWW Troubleshooting 35 4. Can you "ping" the printer? Use the command prompt to ping the printer from your computer. For example: ping 192.168.45.39 Ensure that the ping displays round-trip times. If you are able to ping the printer, verify that the IP address configuration for the printer is correct on the computer. If it is correct, delete and then add the printer again. If the ping command failed, verify that the network hubs are on, and then verify that the network settings, the printer, and the computer are all configured for the same network. 5. Have any software applications been added to the network? Make sure they are compatible and that they are installed correctly with the correct printer drivers. 6. Are other users able to print? The problem may be workstation-specific. Check the workstation network drivers, printer drivers, and redirection (capture in Novell NetWare). 7. If other users are able to print, are they using the same network operating system? Check your system for proper network operating system setup. 8. Is your protocol enabled? Check the status of your protocol on the Network configuration page. See Network configuration page. You can also use the embedded Web server or HP Toolbox to check the status of other protocols. See Using the embedded Web server or HP Toolbox. 9. Does the printer appear in HP Web Jetadmin or other management application? Verify network settings on the Network configuration page. Confirm the network settings for the printer using the printer control panel (for printers with control panels). 36 Chapter 1 Networking ENWW Index B BOOTP 12, 32 BOOTP/TFTP configuring 13 C Configuration page 6 configurations AutoIP 10 manual TCP/IP 10 network 1 server-based 10 TCP/IP 11 D device discovery 8 E EWS. See embedded Web server G gateways overview 33 I information pages Configuration 6 Network configuration 6 Internet protocol (IP) overview 30 IP address BOOTP 32 class 31 host portion 31 network portion 31 overview 30 structure 31 IP addressing 9 L LPD about 19 adding Windows optional networking components 26 configuring a network LPD printer 27 configuring a network printer for Windows 2000 24 configuring a network printer for Windows NT 25 configuring Mac OS 10.2x and later versions 28 configuring Mac OS 9 or earlier versions 28 configuring UNIX 21 configuring Windows 2000 23 configuring Windows NT 23 configuring Windows XP 26 creating an LPR port 27 programs and protocols 20 requirements 20 setup steps 20 M messaging and management, network 8 N network AutoIP configuration 10 BOOTP 12 configuring 1 device discovery 8 DHCP 15 discontinue DHCP configuration 18 embedded Web server 4 HP Toolbox 4 IP addressing 9 manual TCP/IP configuration 10 messaging and management 8 NetWare systems 18 server-based configuration 10 supported protocols 8 TCP/IP configuration 10 TCP/IP configuration tools 11 UNIX systems 15 using printer control panel 6 Windows systems 15 Network configuration page 6 P printing environment 8 R reports, device Configuration page 6 Network configuration page 6 ENWW Index 37 S SAM configuring print queues 22 settings Configuration page 6 Network configuration page 6 subnet mask overview 33 subnets overview 33 supported network protocols 8 T TCP/IP installing for Windows NT 23 overview 30 TCP/IP configuration 10 Transmission Control Protocol (TCP) overview 30 troubleshooting Configuration page, printing 6 Network configuration page, printing U User Datagram Protocol (UDP) overview 30 6 38 Index ENWW © 2004 Hewlett-Packard Development Company, L.P. www.hp.com *Q3948-90947* *Q3948-90947* Q3948-90947