HP jetdirect 175 schematic

User's Guide

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for

USB

Contents

Install print server1. Configure and manage print server2. Troubleshoot print server3. Get Support4. Limited Warranty for print server5. Specifications for print server6.

Installing the print server

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for

USB

Overview

1. Install hardware

Summary: To connect the printer to the network using the 175x or 310x print server, you will:

connect the print server to the network with a network cable,

●

connect the print server to the printer with the included USB cable,

●

plug in the power adapter, and● print a configuration (self-test) page.●

Here are the detailed instructions.

2. Install software

For the basic procedure to set up each Windows (95, 98, 2000, XP, ME, NT 4.0) computer for printing on the networked printer:

This default procedure involves installing printer drivers and other software and configuring network parameters. You will use the installation software on either the CD-ROM supplied with your printer or on the Jetdirect CD-ROM supplied with your print server, depending on your printer model. Here are the instructions.

●

For the LPR/LPD (Line Printer Daemon) alternative printing method...

●

For Macintosh setup (MacOS 8.6 or later), read the Jetdirect CD-ROM on a Macintosh system, select the file Network Printing.htm, and follow the instructions for setting up network printing.

●

Steps to install the print server hardware

Attach the print server to a 10Base-T (Ethernet) or 100Base-TX (Fast Ethernet) local area network by plugging a network cable into the RJ-45 connector on the rear end of the print server.

Attach the print server to the printer by plugging the Universal Serial Bus (USB) cable—shipped with the print server—into the USB connector on the front end of the print server and into the USB connector on the printer.

Caution! Unsupported USB Devices:

HP 4135A Jetdirect Connectivity Card

■

any USB hub■

❍

any USB-to-parallel converter■ any USB cable extender■

Plug the DC power cord from the power module—shipped with the print server—into the power connector on the rear end of the print server . Plug the power module into a power outlet.

Caution! Do not use the power module shipped with your print server with any other products!

❍

Verify the print server’s LEDs:

The 10 or 100 LED on the rear end of the print server lights green to indicate the connection speed.

❍

The power/status LED on the top front begins blinking and within 15 seconds is solid green, to indicate the server passed its self test.

❍

A solid green USB LED on the top front indicates a good USB-II connection, as illustrated above.

❍

If your LEDs are not solid green, see interpreting the LEDs and

diagnosing problems

Verify the connection with the printer by printing a configuration (test) page:

Briefly press and release the test button

on the rear end of the print server. The page should soon emerge from the attached printer.

Interpreting the configuration page and diagnosing problems

If the page does not appear on the printer, or if it is unreadable,

go to this Troubleshooting page, and then return to this User’s

Guide to continue with the installation. You can use the clip attached to the bottom of the print server

to mount it to the printer or to a table or wall. Use either the supplied sticky tape or the mounting screw holes. Or you can pull off the clip.

Next, install software.

Configuring and managing the print server on your network

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for USB

This section describes the tools you can use to configure and manage your print server, as well as the settings you can apply for various protocols. Use this page to link to topics of interest.

Easiest basic configuration

Set up each Macintosh running MacOS (8.6 or later). Read the Jetdirect CD-ROM on a Macintosh system, select the file Network Printing.htm, and follow the instructions for setting up network printing.

●

Set up each Windows computer for printing on the networked printer by using the HP Install Network Printer Wizard.

This basic procedure involves installing printer drivers and other software, configuring network parameters, and setting up the print path. You will use the installation software on either the CD-ROM supplied with your printer or on the HP Jetdirect CD-ROM supplied with your print server, depending on your printer model. This is explained in the software instructions on your Quick Start Guide poster—supplied with your print server—or see http://www.hp.com/support/network-printer-CD.

To use the wizard to install the networked printer on this computer, return to the initial screen for this CD, select the

[Install] button,

and follow the instructions there. Help is included. When finished there, this computer is ready to use the printer.

After using the wizard, you can use the additional tools listed below to make configuration changes and additions and to monitor the printer. Note: Making network address changes might break the print path set up by the wizard. To move a networked printer configured with an IP address, see Moving the print server to another IP Network.

●

Default configuration: details of the print server’s configuration as it

comes from the factory, and how to reset to that configuration

Tools for changing configuration and for managing

Software tools summary: describes a variety of software tools that you

can use to install, configure, and manage a network printer. These tools cover a variety of functions in a variety of operating environments. In general, they allow you to set parameters for the various protocols listed

below... Embedded web server: describes the web server contained within the

print server. You can use this tool to configure and manage the print server.

HP Web Jetadmin: used to install, configure, and/or monitor the networked printer, this software is available at http://www.hp.com/support/net_printing.

Security for configuration: describes the security offered by the various

ways of configuring and managing the print server.

Protocols

The following protocols, and protocol-specific configurations and tools, are supported by the print server.

TCP/IP: includes an overview of TCP/IP, as well as information

on these methods of applying TCP/IP parameters to the print server:

DHCP: a tool for autoconfiguration

❍

BOOTP: a tool for autoconfiguration❍ TFTP: a tool for extended autoconfiguration❍ RARP: a tool on some systems for configuring an IP address❍ Telnet: a tool for configuration and monitoring the print

server

❍

embedded web server: a tool for configuration and management

❍

ports for IP access reference summary❍ moving the print server to another IP network: notes❍

●

LPD (line printer daemon) printing: can be set up using these LPD

instructions

●

FTP printing: [for 310x only, not for 175x] can be set up using●

these FTP instructions IPP printing: [for 310x only, not for 175x] can be set up using the

Internet Printer Connection Software

●

IPX/SPX: in most cases, parameters do not need to be set on the print server.

Note: The print server supports both IPX/SPX direct mode (peer-to-peer) and [for 310x only, not for 175x] IPX/SPX in client/server mode with Novell NetWare servers.

NDPS (Novell Distributed Print Services): HP IP/IPX Printer

Gateway for NDPS, with Novell NetWare

❍

●

DLC/LLC: [for 310x only, not for 175x] can be enabled or disabled; otherwise there are no parameters to set on the Jetdirect module.

●

AppleTalk: Printer Name and Printer Zone parameters can be set up using the HP LaserJet Utility for MacOS.

●

SNMP: (Simple Network Management Protocol) used with your configuration and management tools. The HP-Jetdirect-specific MIB (Management Information Base) is MIB-II compliant; it is available upon request to HP support.

●

Default configuration

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for

USB

Fresh from the factory, before any configuration is changed by a user, the print server has a default configuration for TCP/IP and for IPX peer-to-peer printing (called IPX direct mode). When power is applied in this factory-default state:

TCP/IP: The print server sends out several BOOTP requests and one RARP request. If there is no reply, the print server sends out several DHCP requests. If there is no reply, then the print server uses the default IP address of 192.0.0.192 to appear on the network ready for manual configuration by a user (using the Install Network Printer wizard or any of the other

configuration methods).

●

IPX: The print server tries to determine and use the IPX network number. It is then ready for further configuration by a user (using the Install Network Printer wizard or any of the other configuration methods).

●

When power is cycled thereafter, the configuration remains as set previously.

For IPX, the network number is reassigned automatically.

●

For TCP/IP, one of the following applies:

If a BOOTP reply set the print server’s IP configuration previously, BOOTP replies continue to be sent when

power is cycled. If no reply is received, factory default sequence continues, as described above.

❍

If a DHCP reply set the print server’s IP configuration previously, DHCP requests continue to be sent

indefinitely.

❍

If any configuration changes were made manually by a user, then this manual configuration continues to be used.

❍

If none of the above have been set, the factory default sequence is used, as described above.

❍

●

Resetting the print server to factory defaults (cold reset)

The factory-default reset procedure (described below) is sometimes called a “cold reset” or a “cold boot”. When done, the print server responds exactly like it was fresh from the factory. To reset the print

server configuration to factory defaults, follow these steps:

Unplug the power module from the back of the print server.1.

While holding down the test button

on the rear of the print server, plug the power module back into the print server and continue to hold down the test button for about five seconds. Any user-configured settings will be erased.

HP Jetdirect Software Solutions Summary

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for USB

HP provides a variety of software solutions to set up or manage your HP Jetdirect-connected network devices. Use this table to help you determine which software is best for you.

Operating Environment Function Remarks

HP Install Network Printer Wizard (Windows)

Windows 95, 98, Me, NT 4.0, 2000, XP

●

NetWare 3.x, 4.x, 5.x● TCP/IP● IPX/SPX●

Install a single network printer on a peer-to-peer or client-server network

Simple printer installation, typically integrated with printer system software

●

Runs from the HP Jetdirect CD-ROM● An installable version that runs from your

hard disk can be downloaded from HP’s Web site http://www.hp.com/support/net_printing

●

HP Jetdirect Printer Installer for UNIX

HP-UX 10.x–10.20,

11.x

●

Solaris 2.5.x, 2.6, 7

(SPARCsystems only)

❍

●

TCP/IP●

Fast and easy installation of HP Jetdirect-connected printers

Installs, configures and provides diagnostics capabilities for HP printers connected to TCP/IP networks using HP Jetdirect print servers.

●

Available from:

On the HP Jetdirect CD-ROM provided with standalone HP Jetdirect print servers (Directory: /UNIX)

❍

Anonymous FTP site at ftp.hp.com (Directory: /pub/networking/software)

❍

HP’s Web site http://www.hp.com/support/net_printing

❍

●

HP Web Jetadmin

Windows NT 4.0, 2000

●

HP-UX Solaris, Red Hat Linux, SuSE Linux

●

NetWare* *Supports queue

creation (NetWare), and peripheral management from HP Web Jetadmin hosted on Windows NT 4.0, 2000

●

TCP/IP● IPX/SPX●

Remote installation, configuration, and management of HP Jetdirect-connected print servers, non-HP printers that support the standard MIBs, and printers with embedded web servers

Alerts and consumables management Remote firmware upgrades for HP Jetdirect print servers

Asset tracking and utilization analysis

HP’s preferred solution for ongoing management and installation of multiple printers anywhere on your intranet

●

Browser-based management● Available from HP’s Web site

http://www.hp.com/support/net_printing

●

IPP: Internet Printer Connection Software

[for 310x only, not for 175x]

Windows NT 4.0, Me, XP TCP/IP only

Note:

Microsoft Internet Printing software is also integrated with Windows 2000.

●

Printing via the Internet, to Internet Printing Protocol (IPP)-enabled HP Jetdirect-connected printers

Allows economical distribution of high-quality hardcopy documents over the Internet, replacing fax, mail, and overnight services

●

Requires HP Jetdirect print server firmware version x.07.17 or greater

●

HP IP/IPX Printer Gateway for NDPS

[for 310x only, not for 175x]

NetWare 4.11, 4.2,

5.x, 6.x

●

Simplified installation, printing, and bidirectional management of HP Jetdirect-connected printers under Novell Distributed Print Services (NDPS)

Allows automatic discovery and installation of HP Jetdirect-connected printers into NDPS

Frees up user license● Allows disabling of SAPs to reduce network

traffic

●

Requires HP Jetdirect firmware version X.03.06 or greater

●

HP LaserJet Utility for Mac OS

Mac OS 7.5 or greater●

Installation and management of HP Jetdirect-connected printers

IPP printing, using Internet Printer Connection Software

for HP Jetdirect 310x external print server/Internet connector for USB

Note: Not applicable to 175x

Using the appropriate software on your system, you can create an IPP print path from your system to any HP Jetdirect-connected printer over the Internet.

Note: For incoming print path requests, the network administrator must configure the firewall to accept incoming IPP requests. Security features available in the software are currently limited.

Features and benefits provided by Internet printing include:

High-quality, time-sensitive documents.

●

Full-color or black-and-white documents.● A fraction of the cost of current methods (such as fax, mail, or

overnight delivery services).

●

Extends the traditional LAN printing model to that of an Internet Printing Model.

●

IPP requests can be transmitted outbound through firewalls.●

HP-Supplied Software

HP Internet Printer Connection software allows you to set up Internet printing from Windows NT 4.0 and Windows 2000 clients.

To obtain the software: Download the HP Internet Printer Connection software from HP’s Web site http://www.hp.com/go/print_connect

To install the software and set up the print path to the printer, follow the instructions provided with the software. Contact your network administrator to get the IP address or URL of the printer to complete the setup.

System Requirements (HP software)

Computer running Microsoft Windows NT 4.0 (Intel based), or Windows 2000

●

TCP/IP● HP Jetdirect 310x print server●

Supported Proxies (HP software)

Web proxy with support for HTTP v1.1 or greater (may not be needed if printing over an intranet)

●

Microsoft-Supplied Software

Note: Contact Microsoft Corp. for support of Windows IPP software

Windows 2000 Integrated Software

On Windows 2000 systems, an alternative to using the HP-supplied software is to use the IPP-client software integrated with Windows

2000. The IPP implementation on the HP Jetdirect print server is compatible with Windows 2000 IPP-client software.

To set up a print path to an HP Jetdirect-connected Internet printer using the Windows 2000 IPP-client software, proceed as follows:

Open the Printers folder (click Start, select Settings, and select Printers).

Run the Add Printer wizard (double-click Add Printer), then click Next.

Select Network Printer and click Next.3. Select Connect to a printer on the Internet and enter the print

server’s URL: http://IP_address[/ipp/port#]

where: IP_address is the IP address configured on the HP Jetdirect print server

Example:

http://192.160.45.40

An IPP connection to the print server with IP address 192.160.45.40.

Then click Next.

You will be prompted for a printer driver (the HP Jetdirect print

server does not contain printer drivers, so your system cannot automatically obtain the driver). Click OK to install the printer driver onto your system and follow the instructions on the screen. (You may need your printer CD-ROM to install the driver.)

To complete the print path setup, follow the instructions on the screen.

HP IP/IPX Printer Gateway for NDPS

for HP Jetdirect 310x external print server/Internet connector for USB

Note: Not applicable to 175x

NDPS (Novell Distributed Print Services) is a printing architecture developed by Novell, in partnership with Hewlett-Packard. NDPS simplifies and streamlines the administration of network printing. It eliminates the need to set up and link print queues, printer objects, and print servers. Administrators can use NDPS to manage networked printers within the NetWare 4.11, 4.2, 5.x, and 6.x environments.

The HP IP/IPX Printer Gateway is an NLM developed by HP to provide functionality and compatibility with Novell’s NDPS. It seamlessly integrates HP Jetdirect-attached printers into the NDPS environment. Using the HP Gateway, an administrator can view statistics, configure gateway settings, and configure printing for HP Jetdirect-connected printers.

Features

Features and benefits provided by the HP Gateway and NDPS are:

Smart detection of printers in the NetWare 4.11, 4.2, 5.x, and

6.x environments

●

Automatic installation of printers using IP/IPX● Tight integration with Novell's NDS and NWAdmin● Status updates from printers● Simplified Automatic Driver Download● Reduced SAP Traffic● Reduces the number of required NetWare User Licenses● Native TCP/IP printing with NetWare 5.x and 6.x●

System Requirements

For the most recent information on system requirements and supported clients, visit HP support information at: http://www.hp.com/go/ndpsgateway

The HP IP/IPX Printer Gateway is included with all current versions of NDPS. Novell NetWare 5.x, and 6.x include NDPS.

Note: For more information (including access to the most recent HP IP/IPX Printer Gateway software and the User Guide), access HP support information at: http://www.hp.com/support/net_printing.

HP LaserJet Utility for MacOS

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for

USB

This section describes printer installation software for Mac OS-compatible computer systems. It also explains how to use the HP LaserJet Utility to configure HP printers connected to an AppleTalk network through an HP Jetdirect print server. This section also explains how to use the Chooser to select and set up a MacOS computer to print to your HP printer.

Installing the Printer Software

If the HP LaserJet Utility was included on your printer’s CD-ROM, see your printer documentation for installation instructions, then skip to the next section to configure the printer.

If you are installing the HP LaserJet Utility from the HP Jetdirect CD-ROM, use the following installation instructions.

Note:

If you are installing the HP LaserJet Utility from a source other than the CD-ROM, see the README file that accompanies the software for installation instructions.

Automatic virus detection programs might interfere with the installation of this software. Turn off any such programs that are active on your Mac OS computer before

proceeding with the installation process. Insert the CD-ROM into the CD-ROM drive.1. In the HP Installer window, double-click the installation icon

for the software in the language you want.

Follow the instructions on the screen.3.

For more information about configuring your printer driver, see the online documentation provided on the CD-ROM that came with the printer.

Configuring the Printer

The HP LaserJet Utility allows printer settings such as printer name and preferred zone to be configured from your MacOS system. Hewlett-Packard recommends that only network administrators use the printer configuration capabilities of this utility.

If this printer is to be serviced by a print spooler, set up the printer’s name and zone before configuring the spooler to capture the printer.

Running the HP LaserJet Utility

With the printer turned on and online, and the print server connected to the printer and to the network, double-click the HP LaserJet Utility icon.

If the printer's name is not listed as the target printer, click Select Printer. The Select a Target Printer window appears.

Select the zone, if necessary, from the AppleTalk Zones list in which the printer resides. The zone the printer is in is shown on the configuration page. See the hardware installation guide for your print server or your printer's getting started guide for instructions on printing a configuration page.

Select the printer from the Available Printers list and click OK.

Verifying Network Configuration

To verify your current network configuration, print a Jetdirect configuration page. If you have not printed a configuration page from your printer, see the hardware installation guide for your print server or your printer’s getting started guide for instructions (see Interpreting

the configuration page for more information). If your printer has a

control panel, make sure a READY message appears on the control panel for at least 1 minute, then print the page. The current configuration is listed under “AppleTalk” on the configuration page.

Note: If you have multiple printers on your network, you need to print a configuration page to identify the printer's name and zone.

Renaming the Printer

The factory supplies a default name for your printer.

Hewlett-Packard highly recommends that you rename your printer to avoid having multiple printers with similar names on

your network. You can name your printer anything you like—for

example, “Michael’s LaserJet 4000.” The HP LaserJet Utility has the ability to rename devices located in different zones, as well as the local zone (no zones need to be present in order to use the HP LaserJet Utility).

Select the Settings icon from the scrolling icon list. The Please select a setting: dialog appears.

Select Printer Name in the list.2. Click Edit. The Set Printer Name dialog box appears.3. Type the new name.

Note: The name may be up to 32 characters in

length. A warning beep indicates that an illegal

character was typed.

Click OK.

Note: If you try to name your printer the same

name as another printer, an alert dialog box

appears directing you to select another name. To

select another name, repeat steps 4 and 5.

If your printer is on an EtherTalk network, continue with the next section, Selecting a Zone.

To exit, select Quit from the File menu.7. Notify everyone on your network of the new name for your

printer so they can select the printer in the Chooser.

Selecting a Zone

The HP LaserJet Utility allows you to select a preferred zone for your printer on a Phase 2 EtherTalk network. Instead of your printer remaining on the default zone, which is set by the router, this utility lets you select the zone on which your printer appears. The zones on which your printer can reside are limited by your network configuration. The HP LaserJet Utility only enables you to select a

zone that is already configured for your network.

Zones are groups of computers, printers, and other AppleTalk devices. They can be grouped by physical location (for example, Zone A may contain all the printers on the network in building A). They may also be grouped logically (for example, all printers used in the finance department).

Select the Settings icon from the scrolling icon list. The Please Select a Setting: dialog box appears.

Select Printer Zone in the list and click Edit. The Select a Zone dialog box appears.

Select your preferred network zone from the Select a Zone: list and click Set Zone.

To exit, select Quit from the File menu.4. Notify everyone on your network of the new zone for your

printer so they can select the printer in the Chooser.

Selecting Your Printer

Select the Chooser from the Apple menu.1. Select the printer icon for use with your printer. If the

appropriate printer icon does not appear in the Chooser, or you are not sure which icon to select for your printer, see Installing

the Printer Software above.

If AppleTalk is not active, an alert dialog box appears on your screen. Select OK. The Active button turns on.

If your network is linked to other networks, the AppleTalk Zones list dialog box appears in the Chooser.

If applicable, select the zone in the AppleTalk Zones scrolling list where your printer is located.

Select the printer name you want to use from the list of printer names in the upper-right area of the Chooser.

If your printer is the only name listed in the dialog box,

you must still select it. Your printer remains selected

until you select a different printer with the Chooser.

❍

If the printer's name does not appear in the list, make sure

the following tasks have been performed:

The printer is turned on and is online.

■

The print server is connected to the printer and to the network.

■

The printer cable connections are secure.■

❍

A READY message should appear if the printer has a control panel display. See troubleshooting for more information.

Click Setup or Create in the Chooser; then, if prompted, select the appropriate PostScript Printer Description file (PPD) for the printer. For more information, see the online documentation (HP LaserJet Printing Guide).

Set Background Printing to ON or OFF. If background printing is turned OFF when you send a print job

to the printer, status messages appear on your screen and you have to wait until the messages clear before continuing your work. If background printing is turned ON, the messages are redirected to the PrintMonitor and you can continue working while the printer is printing your job.

Exit the Chooser. To display your user name on the network when you are

printing documents, go into the Control Panel on your MacOS computer, select Sharing Setup, then type your owner name.

Testing the Configuration

Select Print Window from the File menu, or if no window is open, select Print Desktop.

The Print dialog box appears.

Click Print. If the printer prints the job, you have connected your printer to

your network correctly. If your printer does not print, see

troubleshooting.

TCP/IP Configuration

for HP Jetdirect 175x external print server/Internet connector for USB

and HP Jetdirect 310x external print server/Internet connector for

USB

Summary of TCP/IP Configuration● Overview of the TCP/IP Protocol● Using BOOTP and TFTP● Using DHCP● Using RARP● Using the arp and ping commands● Using Telnet● Using the embedded web server● Using a syslog server● Moving the networked printer to another network● Ports for IP access to the HP Jetdirect print server●

Introduction

To operate properly on a TCP/IP network, the HP Jetdirect print server must be configured with valid TCP/IP network configuration parameters, such as an IP address. Depending on your printer and system, this can be done in the following ways:

Note: When shipped from the factory, the HP Jetdirect print server has no IP address. If the HP Jetdirect print server is not configured with a valid IP address within two minutes after power up, a factory default value of

192.0.0.192 will be automatically assigned. This address must be reconfigured with a valid address for use on your TCP/IP network. For more information on TCP/IP networks, see TCP/IP overview.

By using your printer installation software or the HP Jetdirect print server installation software on supported systems. For more information see the software solutions summary.

●

By downloading the data from a network-based server using BOOTP (Bootstrap Protocol) and TFTP (Trivial File Transfer Protocol) each time the printer is turned on. For more

●

information, see BOOTP/TFTP. By using Dynamic Host Configuration Protocol (DHCP). This

protocol is supported in HP-UX, Solaris, Red Hat Linux, SuSE Linux, Windows NT/2000, NetWare, and MacOS systems. (Refer to your network operating system manuals to verify that your operating system supports DHCP.) For more information, see 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

print server lease durations to infinite. This ensures

that print server IP addresses remain static until

such time as Dynamic Domain Name Services are

provided.

●

By a network-based server using RARP (Reverse Address Resolution Protocol) answering the print server's RARP request and supplying the print server with the IP address. The RARP method only allows you to configure the IP address. For more information, see RARP.

●

By using the arp and ping commands from your system. For more information, see arp and ping commands.

●

By setting configuration parameters using Telnet. In order to set configuration parameters, set up a Telnet connection from your system to the HP Jetdirect print server using the default IP address. The default IP address takes effect two minutes after the printer is turned on (if none of the other configuration methods have been used). The default IP address is

192.0.0.192. If Telnet is used, the print server saves the configuration over power cycles. For more information, see

Telnet.

●

By browsing to the embedded Web server on the HP Jetdirect print server and setting the configuration parameters. For more

●

information, see the embedded web server.

Overview of TCP/IP protocol

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, including HP Jetdirect-connected devices.

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 (see Dynamic Host Configuration Protocol (DHCP)).

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.

Network Portion

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.

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.

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. A subnet mask is applied to each IP address to specify the portion used for subnetworks, and the portion used to identify the node.

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.

The installation sequence for DHCP or BOOTP/TFTP setup

Set up the DHCP or BOOTP service. Refer to procedure.1. Install the hardware; power on the print server. Refer to

procedure.

For Windows computers, run the Install Network Printer wizard on each client to load driver and set up the print path. Return to the initial screen for this CD, and select the

[Install] button for

the Install Network Printer wizard.

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.

Syslog Server

A syslog server is a system on the network (typically a UNIX system) that can receive and log syslog messages from other devices on the network. Syslog messages allow administrators to monitor status or troubleshoot network devices.

A syslog server requires software that provides syslog capabilities running on the server. UNIX systems provide a daemon, syslogd, that monitors User Datagram Protocol (UDP) port 514 for incoming messages. The messages are processed depending their priority and on how syslogd is set up to operate.

You can configure the HP Jetdirect print server with the syslog server’s IP address. When a syslog server is configured, both the HP Jetdirect print server and attached device (such as a printer or mopier) can send syslog messages using UDP.

The syslog server may not receive all syslog events from the HP Jetdirect print server:

UDP does not guarantee delivery of messages.

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The HP Jetdirect print server attempts to eliminate duplicate messages (to minimize unnecessary network traffic).

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The volume of messages sent by the HP Jetdirect print server is configurable.

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Methods to configure HP Jetdirect syslog parameters include BOOTP, DHCP, Telnet, the embedded web server, and management software.

Selected syslog parameters on the HP Jetdirect print server:

Item Description

Syslog Server IP address

IP address of a syslog server to send syslog messages to. If zero (0.0.0.0) or not specified, syslog messages are disabled.

Syslog Maximum Messages

The number of syslog messages that can be sent by the HP Jetdirect print server on a per-minute basis, from 0 to 1000. This parameter helps to control the syslog file size. The default is 10 messages per minute. If 0, the number of syslog messages is not restricted.

Syslog Priority

A method for filtering syslog messages that are sent to the syslog server. The range is 0 through 8, with 0 the most specific and 8 the most general. Only messages that are lower than the specified filter level (or higher in priority) are reported. The default is 8, messages of all priorities are sent. If 0, all syslog messages are disabled.

Syslog Facility

A code used to identify the source facility of a message (for example, to identify the source of selected messages during troubleshooting). By default, the HP Jetdirect print server uses LPR as the source facility code, but local user values of local0 through local7 can be used to isolate individual or groups of print servers.

Typical logfile entries of syslog messages:

Oct 22 08:10:33 jd08 printer: error cleared Oct 22 15:06:07 jd04 printer: powered up Oct 22 15:07:56 jd04 printer: offline or intervention needed Oct 22 15:08:58 jd04 printer: error cleared Oct 24 17:52:27 jd37 printer: powered up Oct 24 18:28:13 jd37 printer: printer is disconnected Oct 24 18:37:46 jd07 printer: error cleared Oct 24 18:38:42 jd37 printer: powered up Oct 25 07:50:16 jd04 printer: toner/ink low

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