HP T5630 - Thin Client Instrucciones de instalación y funcionamiento

Using the HP DHCP Settings Update Client

HP thin clients running Microsoft®Windows Embedded Standard 2009 (WES) and

indows®XP Embedded (XPe)

Abstract.............................................................................................................................................. 2

Introduction......................................................................................................................................... 2

Server Requirements Linux Distributions .................................................................................................. 2

DHCP Server Requirements................................................................................................................ 2

FTP Server Requirements ................................................................................................................... 2

Process Flow Diagram.......................................................................................................................... 3

Understanding the Process Flow......................................................................................................... 4

Version Checking ................................................................................................................................ 5

Version Checking Flowchart .............................................................................................................. 5

Control Panel Options .......................................................................................................................... 6

Administrative Applet ....................................................................................................................... 6

User Applet ..................................................................................................................................... 6

Best Practices ...................................................................................................................................... 7

Command Line Syntax.......................................................................................................................... 8

Input File Parameters ............................................................................................................................ 8

[Display] ......................................................................................................................................... 8

[GUIUnattended] ............................................................................................................................. 9

[Userdata]..................................................................................................................................... 11

[Internet] ....................................................................................................................................... 12

[Altiris].......................................................................................................................................... 13

[XpePrep]...................................................................................................................................... 13

Sample .INI File................................................................................................................................. 14

Abstract

This paper provides instructions for using HP DHCP Settings Update Client.

Introduction

The HP DHCP Settings Update Client is a utility that allows an IT Administrator to apply settings to

an HP WES or XPe operating system. The settings are applied through an .INI file that uses a

subset of parameters from Microsoft's sysprep.inf as well as several WES/XPe/HP-specific keys.

XPePrep can run by specifying a local .INI file to be processed, or it can be used in conjunction with

DHCP and FTP servers to automatically apply settings across multiple clients on a network.

Server Requirements Linux Distributions

The following sections provide a list of requirements for the DHCP Server and the FTP Server.

DHCP Server Requirements

•Option 171 should contain a string value specifying an FTP server name. This can also be an IP

address, but must still be specified as a string (for example, 123.12.34.255).

•Option 172 should contain a String value specifying the path and filename for the input answer

file. This should be in the format of folder/filename.ini. If the file is located on the top directory,

then only the filename is required.

For example, if the answer file were stored in ftp://myserver/myfolder/xpeprep.ini, then DCHP option

171 should contain the string myserver and DHCP option 172 should contain the string

myfolder/xpeprep.ini.

If one of these values is changed on the DHCP server after clients have been updated, any clients

needing the new strings will either need to be rebooted or have the Microsoft DHCP Client Service

restarted. This is because DCHP options are cached locally on the client to increase performance.

However, this also prevents the client from seeing changes made on the server. Rebooting the

client will cause the cache to be refreshed to contain the new values. Restarting the DHCP service

will clear the cache so that requests will go to the server instead of the cache.

FTP Server Requirements

The FTP server must have a folder specified by DHCP option 172 that allows anonymous read

access or the server should have anonymous read access to the default folder (if no folder is

specified). Client input files should be placed in this folder.

Process Flow Diagram

The following diagram illustrates the process flow:

Understanding the Process Flow

The following steps explain the process shown in the above flowchart:

1. The system boots and launches the client from the Run key in the local machine registry or the

user launches the client from command line, or by running Update Now from the client’s Control

Panel applet.

2. The client checks if a file was specified in the command line (e.g., xpeprep\test.ini). If the file

is found, the client will check the SettingsVersion value and then process the file if needed. The

following steps are performed:

a. Delete the input file.

b. Process the CommitEWF option.

c. The client exits using the specified shutdown option.

3. The client looks for c:\xpeprep.ini. If the file is found, the client will check the

SettingsVersion value and then process the file if needed. The following steps are performed:

a. Delete c:\xpeprep.ini.

b. Process the CommitEWF option.

c. The client exits using the specified shutdown option.

4. If the file is not found, the client checks the DHCP settings. If DHCP is enabled and the DHCP

server can be reached, the client will loop. It will try to contact the DHCP server for the FTP server

and file path options based on the number of retries specified. Once the DHCP server has

responded with the server and path names, the user will get the file from the FTP server and store it

locally as c:\xpeprep.ini. The client will check the SettingsVersion value, and then process

the file, if needed. The following steps are performed:

a. Delete c:\xpeprep.ini.

b. Process the CommitEWF option.

c. The client exits using the specified shutdown option.

If all other steps have failed, the client exists.

Version Checking

The client must maintain user and system-level settings versions. This level of revision control is

necessary because all settings are applied to all users except for Internet proxy settings. If a version

of the settings has been applied to the system, each new user will also process the same file (if

DHCP-based) and apply the proxy settings (if any). If no user-level processing is required (in other

words, no [Internet] section), then EWF will not be committed and the shutdown option will not be

processed.

Version Checking Flowchart

Version checking can be illustrated by the following flowchart:

Control Panel Options

The HP DHCP Settings Update Client can also be configured and/or run from the Control Panel.

There are two modes of operation for this Control Panel applet:

•Administrative mode: Administrative mode can only be accessed from the Administrator account

and allows configuration.

•Manual updates: All other users can request a manual update (if available) using this applet.

To select the mode of operation, go to Control Panel and select Switch to Classic View or Other

Control Panel Options from the left pane. Select the icon labeled HP DHCP Settings Update

Client.

Administrative Applet

User Applet

Best Practices

HP recommends the following best practices when configuring the HP DHCP Settings Update

Client.

Best Practice Explanation

If you apply a computer name change,

the Shutdown option in XpePrep should

equal Shutdown or Reboot, and the

CommitEWF option should be set to

Yes.

Changing the computer name requires a reboot in

order to take effect. If you apply a computer name

change and do not commit the change to the EWF

protected volume, the name change will be lost

during the reboot.

If you select Yes for CommitEWF, the

Shutdown option should be set to Reboot

or Shutdown.

Data in the EWF overlay is not committed to the

protected volume until the system shuts down. Any

changes made to the system after the HP DHCP

Settings Update Client runs (and commits the EWF

overlay) will be saved.

If you select No for CommitEWF, then

you should not set the Shutdown option

to Reboot or Shutdown. The

recommended setting is None.

If the EWF Overlay is not committed to the protected

volume, then the client will not preserve the

SettingsVersion. This will cause the client to

process the settings and apply the Shutdown option

every time a user logs in. This would put the system

in an endless loop of booting, logging-in, and

rebooting.

If you do not specify a SettingsVersion,

or the SettingsVersion is set to 0, then

you should not set the Shutdown option

to Reboot or Shutdown. The

recommended setting is None.

Not specifying the SettingsVersion, or setting it

equal to 0will cause the client to always apply the

settings and process the Shutdown option. This

would put the system in an endless loop of booting,

logging-in, and rebooting.

If you change the password on the

Administrator account, then the computer

name changes will only be applied when

users with administrative privileges logon

to the machine.

Changing the computer name requires

administrative access. The client depends on

impersonating the Administrator account in order to

apply computer name changes when running as a

“Guest” user. For security reasons, a method of

communicating a password change to the client has

not been established.

In order to process the CommitEWF or

Shutdown options, other settings must be

specified.

These options will not be processed unless other

settings have been specified. This is done to ensure

that there are no unnecessary reboots or writes to

the flash storage media.

Command Line Syntax

For local file-based processing, use the following command line syntax:

C:\Windows\XPePrep.exe <path to .ini file>

For example: C:\Windows\XPePrep.exe c:\xpeprep.ini.

You must specify the full path to the .INI file. This command line cannot be a relative path.

For DHCP FTP-based processing, use the following command line syntax:

C:\Windows\XPePrep.exe

Input File Parameters

The following tables list input file parameters for [Display], [GUIUnattended], [Userdata],

[Internet], and [XpePrep].

[Display]

Setting Description

BitsPerPel = INT This setting specifies color depth in bits per pixel. Possible values could

be 4, 8, 16, 24, or 32 depending on video driver/monitor support.

This setting will be ignored if not specified.

Vrefresh = INT This setting specifies refresh rate in Hertz of the display adapter.

Possible values could be 0, 65, 70, 72, etc. depending on the

monitor/video adapter.

Xresolution = INT This setting specifies horizontal resolution of the display.

This setting will be ignored if not specified.

Yresolution = INT This setting specifies vertical resolution of the display.

This setting will be ignored if not specified.

If the system has multiple monitors, the same settings will be applied to all monitors.

Specifying a setting that the monitor and/or graphics card does not support will prevent the device

from operating.

[GUIUnattended]

Setting Description

TimeZone = INT This setting will be ignored if not specified.

The following table lists the numeric values corresponding to the time zones.

Index Time Zone Display

000 Dateline Standard Time (GMT-12:00) International Date Line West

001 Samoa Standard Time (GMT-11:00) Midway Island, Samoa

002 Hawaiian Standard Time (GMT-10:00) Hawaii

003 Alaskan Standard Time (GMT-09:00) Alaska

004 Pacific Standard Time (GMT-08:00) Pacific Time (US and Canada);

Tijuana

010 Mountain Standard Time (GMT-07:00) Mountain Time (US and Canada)

013 Mexico Standard Time 2 (GMT-07:00) Chihuahua, La Paz, Mazatlán

015 U.S. Mountain Standard Time (GMT-07:00) Arizona

020 Central Standard Time (GMT-06:00) Central Time (US and Canada)

025 Canada Central Standard Time (GMT-06:00) Saskatchewan

030 Mexico Standard Time (GMT-06:00) Guadalajara, Mexico City,

Monterrey

033 Central America Standard Time (GMT-06:00) Central America

035 Eastern Standard Time (GMT-05:00) Eastern Time (US and Canada)

040 U.S. Eastern Standard Time (GMT-05:00) Indiana (East)

045 S.A. Pacific Standard Time (GMT-05:00) Bogota, Lima, Quito

050 Atlantic Standard Time (GMT-04:00) Atlantic Time (Canada)

055 S.A. Western Standard Time (GMT-04:00) Caracas, La Paz

056 Pacific S.A. Standard Time (GMT-04:00) Santiago

060 Newfoundland Standard Time (GMT-03:30) Newfoundland

065 E. South America Standard Time (GMT-03:00) Brasilia

070 S.A. Eastern Standard Time (GMT-03:00) Buenos Aires, Georgetown

073 Greenland Standard Time (GMT-03:00) Greenland

075 Mid-Atlantic Standard Time (GMT-02:00) Mid-Atlantic

080 Azores Standard Time (GMT-01:00) Azores

083 Cape Verde Standard Time (GMT-01:00) Cape Verde Islands

085 GMT Standard Time (GMT) Greenwich Mean Time : Dublin,

Edinburgh, Lisbon, London

090 Greenwich Standard Time (GMT) Casablanca, Monrovia

095 Central Europe Standard Time (GMT+01:00) Belgrade, Bratislava, Budapest,

Ljubljana, Prague

Index Time Zone Display

100 Central European Standard Time (GMT+01:00) Sarajevo, Skopje, Warsaw,

Zagreb

105 Romance Standard Time (GMT+01:00) Brussels, Copenhagen, Madrid,

Paris

110 W. Europe Standard Time (GMT+01:00) Amsterdam, Berlin, Bern, Rome,

Stockholm, Vienna

113 W. Central Africa Standard Time (GMT+01:00) West Central Africa

115 E. Europe Standard Time (GMT+02:00) Bucharest

120 Egypt Standard Time (GMT+02:00) Cairo

125 FLE Standard Time (GMT+02:00) Helsinki, Kyiv, Riga, Sofia, Tallinn,

Vilnius

130 GTB Standard Time (GMT+02:00) Athens, Istanbul, Minsk

135 Israel Standard Time (GMT+02:00) Jerusalem

140 South Africa Standard Time (GMT+02:00) Harare, Pretoria

145 Russian Standard Time (GMT+03:00) Moscow, St. Petersburg,

Volgograd

150 Arab Standard Time (GMT+03:00) Kuwait, Riyadh

155 E. Africa Standard Time (GMT+03:00) Nairobi

158 Arabic Standard Time (GMT+03:00) Baghdad

160 Iran Standard Time (GMT+03:30) Tehran

165 Arabian Standard Time (GMT+04:00) Abu Dhabi, Muscat

170 Caucasus Standard Time (GMT+04:00) Baku, Tbilisi, Yerevan

175 Afghanistan Standard Time (GMT+04:30) Kabul

180 Ekaterinburg Standard Time (GMT+05:00) Ekaterinburg

185 West Asia Standard Time (GMT+05:00) Islamabad, Karachi, Tashkent

190 India Standard Time (GMT+05:30) Chennai, Kolkata, Mumbai, New

Delhi

193 Nepal Standard Time (GMT+05:45) Kathmandu

195 Central Asia Standard Time (GMT+06:00) Astana, Dhaka

200 Sri Lanka Standard Time (GMT+06:00) Sri Jayawardenepura

201 N. Central Asia Standard Time (GMT+06:00) Almaty, Novosibirsk

203 Myanmar Standard Time (GMT+06:30) Rangoon

205 S.E. Asia Standard Time (GMT+07:00) Bangkok, Hanoi, Jakarta

207 North Asia Standard Time (GMT+07:00) Krasnoyarsk

210 China Standard Time (GMT+08:00) Beijing, Chongqing, Hong Kong

SAR, Urumqi

215 Singapore Standard Time (GMT+08:00) Kuala Lumpur, Singapore

220 Taipei Standard Time (GMT+08:00) Taipei

225 W. Australia Standard Time (GMT+08:00) Perth

227 North Asia East Standard Time (GMT+08:00) Irkutsk, Ulaan Bataar

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