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Avocent DSR1020 - page 1
For T echnical Support: Avocent Corporation 4991 Corporate Drive Huntsville, Alabama 35805-6201 USA Tel: +1 256 430 4000 Fax: +1 256 430 4031 590-4 1 9-00 1A Avocent International Ltd. Avocent House, Shannon Free Zone Shannon, County Clare, Ireland Tel: +353 6 1 7 1 5 292 Fax: +353 6 1 47 1 8 7 1 Avocent Asia Pacifi c Singapore Branch Offi ce 1 0 ...
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Avocent DSR1020 - page 2
INSTRUCTIONS This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. DANGEROUS VOLTAGE This symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product’s enclosure that may be of sufficient m ...
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Avocent DSR1020 - page 3
DSR ® Switch Inst aller/User Guide For models: DSR1020, DSR2020 , DSR4 020, DSR8020 A vocent, the A vocent logo, The Power of Being There, DSR, DSV iew and OSCAR are registered trademarks of A vocent Corporation or its affiliates. All other marks are the property of their respective owners. © 2004 A vocent Corporation. All rights reserved. ...
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USA Notification W arning: Changes or modifi cations to this unit not expressly approve d by the party responsible for compliance could void the user’s authority to operate the equipment. Note: This equipment has be en test ed and found to comply wi th the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limi ts ar ...
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iii List of Figures ................ ................... ....................... ................... ....................... ............ .. v List of Tables .. ...................... .................... ...................... .................... ...................... ..... .v i i Chapter 1: Product Overview .. ......... .................... ... ...
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iv DSR Switch Instal ler/User Guide ...
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v Figure 1.1: Example DSR Switch Configuration.................. .................... ................... .................... .. 3 Figure 1.2: DSR Switch Model Comparison ............... ... .................... .................... .................... ....... 3 Figure 2.1: Basic DSR Switch Configuration .............. .................... ...... ...
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vi DS R Switch Installe r/User Guide ...
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vii Table 3.1: OSCAR Interface Status Symbols .................. .................... .................... .................... ..... 14 Table 3.2: OSCAR Interface Na vigat ion Basics ............. ... .................... ................. ... ................... ... 15 Table 3.3: Setup Features to Configure the OSCAR Interface ........... ....... ...
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viii DSR Switch Installer/User Guide ...
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1 CHAPTER 1 Product Overview Features and Benefit s Avocent DSR ® switches combine analog and digital tech nology to provi de flexible, centralized control of data center servers and facilitat e the OA&M (operations, activation and m aintenance) of remote branch offices where trained operators may be unavailable. They provide enterp rise custo ...
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Avocent DSR1020 - page 12
2 DSR Switch Installer/User Guide The DSRIQ-SRL (serial) module is a DCE device that provides the primary interface between a serial device and a DSR switch. It provides VT1 00 terminal emulation, break suppression and port history in a compact, convenient module. Access the DSR switch via network connection No special software or drivers are requi ...
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Avocent DSR1020 - page 13
Chapter 1: Product Overview 3 Figure 1.1: Example DSR Switch Configurat ion Figure 1.2: DSR Switch Model Comparison Digital User (Computer with In ternet browser) Analog User (OSCAR Graphical User Interface) DSR Switch Modem Telephone Network Ethernet DSView Server Software Model Number of Servers Digital pa th s Analog User DSR1020 16 1 1 DSR2020 ...
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4 DSR Switch Installer/User Guide Safety Precautions To avoid potential video and/or key board problems when using Avocent products: • If the building has 3-phase AC power , ensure that the co mputer and monit o r are on the same phase. For best results, they should be on the same circuit. To avoid potentially fatal shock hazard and possi ble dam ...
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Avocent DSR1020 - page 15
5 CHAPTER 2 Installation The DSR switching system requires connectivity to a server runni ng the DSView Server software. DSView software allows a user to view and control target devices (one at a time) attached to the DSR switching system. For more information on the DSView software, see the DSView Installer/User Guide. The DSR switching system tra ...
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6 DSR Switch Installer/User Guide The following diagram illustrates on e possible configuration for your DSR switch. Figure 2.1: Basic DSR Switch C onfiguration Digital U ser Servers 1-16 DSR1020 Switch Power Telephone Network Ethernet Internet Connection Cord Ethernet and/or Modem Setup Analog User SPC Port Connection KVM Connections Ports 1-16 CA ...
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Avocent DSR1020 - page 17
Chapter 2: Installat ion 7 Setting up your network The DSR switching system uses IP addresses to unique ly identify th e switch and the target devices. The DSR switch supports both Dynamic Host Configuration Protocol (DHCP) and static IP addressing. Avocent recommends th at IP addresses be reserved for each switch and that they remain static while ...
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8 DSR Switch Installer/User Guide Connecting the DSR Switch Hardware NOTE: The DSR switch may be rack mounted in a 1U configuration. T he DSR switch does not support a 0U configuration. T o connect and power up your DSR switch: 1. Power down the target device(s) that will be part of your DSR switching system. Locate the power cord that came with th ...
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Avocent DSR1020 - page 19
Chapter 2: Installat ion 9 9. Power up each target device a nd then power up the DSR switch. After approximately one minute, the switch completes initial izatio n and disp lays the OSCAR ® graphical user interface Fr ee tag on the local port monitor . 10. Use the DSV iew software to configure the sw itch. See the DSV iew Installer/User Guide for d ...
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Avocent DSR1020 - page 20
10 DSR Switch Instal ler/User Guide V erifying the Connections DSR switch The front panel of the DSR switch features two LE Ds indicating th e Ethern et connection. The top green LED is the Link indicator. It will illuminate when a valid connection to the network is established and blink when there is activity on the port. The lower amber/ green LE ...
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Avocent DSR1020 - page 21
Chapter 2: Installation 11 4. Set Acceleration to None for mouse sync. 5. Click OK . 6. Cl ick Mouse Align in the DSV iew software remote session wind ow(s) to re alig n the mo use. T o adjust mouse settings on Windows 2000 (using de fault drivers): 1. From the Desktop, select S tart - Settings - Contr ol Panel - Mouse . The Mouse Properties dialog ...
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12 DSR Switch Instal ler/User Guide T o adjust mouse settings using Red Hat ® Linux ® drivers: 1. From the Desktop Controls, select the mouse setting s . 2. Set acceleration to the center position of the slid er (the fourth tick mark from the left) and apply the changes. NOTE: If you are using an older version of Red H at Li nux software with a n ...
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Avocent DSR1020 - page 23
13 Local Port Operation Controlling Y our Syste m at the Local Port The DSR switch includes a local port on the back. This port allows you to connect a keyboard, monitor and mouse to the switch for dir ect access. The DSR switch uses the OSCAR ® graphical user interface, which has intuitive menus to configure your system and select target devices. ...
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Avocent DSR1020 - page 24
14 DSR Switch Instal ler/User Guide Viewing the st atus of y our DSR switching system The status of target devices in your sys tem is i ndicated in the far right columns of the Main dialog box. The following table describ es th e status symbols. Selecting t arget devices Use the Main dialog bo x to select target devices. When you select a targ et d ...
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Chapter 3: Local Port Operation 15 T o disconnect from a t arg et device: Press Print Screen and then Alt+0 (zero). This leaves the user in a free state, with no target device selected. The status flag on your d esktop displays Free . Sof t switching Soft switching is the ability to switch target de vices using a hotkey sequen ce. You can soft swit ...
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16 DSR Switch Instal ler/User Guide Alt+X Closes current dialog box and returns to previous one. Alt+O Selects the OK button, then returns to the previous dialog box. Enter Completes a switch ope ration in the Main dialog box an d exits the OSCAR interface. Single-click, Enter In a text box, single-clicking an entry and pressing Enter selects the t ...
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Avocent DSR1020 - page 27
Chapter 3: Local Port Operation 17 Configuring OSCAR Interface Menus You can configure your DSR switching system from the Setu p dialog box within the OSCAR interface. Select the Name s button when initially setting up your DSR sw itching system to identify target devices by u nique names. Select the othe r setu p features to manage routine tasks f ...
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18 DSR Switch Instal ler/User Guide Figure 3.2: Setup Dialog Box Assigning t arget device names Use the Names dialog box to identify target devices by name rath er than by port number. The Names list is always sorted by port order. You can toggle between displaying the name or t he EID number of each DSRIQ module, so even if you move the target dev ...
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Chapter 3: Local Port Operation 19 T o access the OSCAR interface Names dialog box: 1. If the OSCAR interface is not open, press Print Screen . The Main dialog box appears. 2. Click Setup - Names. The Names dialog box appears. Figure 3.3: Names Dialog Box NOTE: If new DSRIQ modules are discovered by the DS R switch, the on-screen list will be autom ...
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20 DSR Switch Instal ler/User Guide T o assign names to t arget devices: 1. In the Names dialog box, select a target device name or port number and click Modi fy . The Name Modify dialog box appears. Figure 3.4: Name Modify Dialog B ox 2. T ype a name in the New Name box. Names of targ et devices may be up to 15 ch aracters long. Legal characters i ...
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Avocent DSR1020 - page 31
Chapter 3: Local Port Operation 21 Assigning device types While the DSR switch automatically discov ers attached cascade switches, you will need to specify the number of ports on the cascad e switch through the Devices dial og box. You will see an Sw-4, Sw-6, Sw-8, Sw-16 or Sw-24 appear in the Type category for the cascade switch. Select the switch ...
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Avocent DSR1020 - page 32
22 DSR Switch Instal ler/User Guide Figure 3.6: Device Modify Dialog Box 3. Choose the number of ports supported by your switch and click OK . 4. Repeat steps 1-3 for each port requi ring a device type to be assigned. 5. Click OK in the Devices dialog box to save settings. NOTE: Changes made in the Device Modify dial og box are not saved until you ...
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Avocent DSR1020 - page 33
Chapter 3: Local Port Operation 23 Figure 3.7: Menu Dialog Box T o choose the display order of t arget devices: 1. Select Name to display target devices alphabetically by name. -or- Select EID to display target devices numerically by EID number . -or- Select Port to display target devices numerically by port number . 2. Click OK . Depending on the ...
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24 DSR Switch Instal ler/User Guide Controlling the st atus flag The status flag displays on your desktop and shows the name or EID number of the selected target device or the status of the select ed port. Use the Flag dialog box to con figure the flag to display by target device name or EID number, or to change the flag color, opacity, display tim ...
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Chapter 3: Local Port Operation 25 T o determine how the st atus flag is displayed: 1. Select Name or EID to determine what information will be displayed. 2. Select Displayed to show the flag all the time or select Ti m e d to display the flag fo r only five seconds after switching. 3. Select a flag color under Display Color . The following flag co ...
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26 DSR Switch Instal ler/User Guide Figure 3.10: Broadcast Dialog Box NOTE: Broadcasting Keys trokes - The keyboard state must be identical for all target devices receiving a broadcast to interpret keystrokes identically . S pecifically , the Caps Lock and Num Lock modes must be the same on all keyboards. While the switch attempts to send keystroke ...
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Chapter 3: Local Port Operation 27 T o turn Broadcasting off: From the Commands di alog box, clear the Broadcast Enable checkbox. Using Scan mode In Scan mode, the DSR sw itch automatically scans from port to port (target device to target device). You can scan up to eigh t target devices, specifying which ones to scan and the number of seconds that ...
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28 DSR Switch Instal ler/User Guide 4. T ype the first few characters of a tar get device na me or port number to scan. The first matching target device will appear in the line. -or- Press the following keyboard commands in th e Name, Port or T im e co lumn to move through the list of target devices available to scan. a. Press Alt+Down Arrow to mov ...
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Chapter 3: Local Port Operation 29 Figure 3.12: Commands Dialog Box 3. Select Scan Enable in the Commands dialog box . 4. Click X to close the Commands dialog bo x. NOTE: Scanning will begin as s oon as the Scan Enable button is selecte d. T o cancel Scan mode: Select a target device if the OSCAR interface is open. -or- Move the mouse or press any ...
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30 DSR Switch Instal ler/User Guide Setting local port Sc reen Saver options Use the Screen Saver dialog box to manage the screen saver inactivity time and test the Screen Saver mode on the local port. If securi ty has b een enabled in the DSView software, after the specified Inactivity Time elapses, the local port locks and remains locked until yo ...
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Chapter 3: Local Port Operation 31 3. (Optional) Click Te s t to activate the screen saver test whic h lasts 10 second s th en returns you to the Security dialog box. 4. Click OK . T o exit Screen Saver mode and log in to the local port: 1. Press any key or move the mouse. 2. If Screen Saver security was turned on in the DSV iew softwa re, you will ...
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32 DSR Switch Instal ler/User Guide T o set the keyboard country code for Sun serve rs: 1. If the OSCAR interface is not open, press Print Screen . The Main dialog box will appear . 2. Click Setup - Keyboar d . The Keyboard dialog box appears . Figure 3.14: Keyboard Dialog Box 3. Select a country code and click OK . 4. Reboot the Sun servers. After ...
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Avocent DSR1020 - page 43
Chapter 3: Local Port Operation 33 Managing Server T asks Using the OSCAR Interface From the OSCAR interface Commands dialog box, you can manage your DSR switching system and user connections, enable the Scan and Broad cast mod es and update your firmware. T o access the OSCAR interface Commands dialog box: 1. Press Print Screen to launch the OSCAR ...
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Avocent DSR1020 - page 44
34 DSR Switch Instal ler/User Guide Viewing and disconnecting user connections You can view and disconnect users through the User Status dialog box. The username (U) will always be displayed; however, you can display ei ther the targ et device nam e or EID number to which a user is connected. If there is no user currently co nnected to a channel, t ...
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Chapter 3: Local Port Operation 35 Figure 3.17: Disconnect Dialog Box 4. Click OK to disconnect the user and return to the User Status dialog box. -or- Click X or press Escape to exit the d ialog box with out discon nectin g a user . NOTE: If the User St atus list has changed since it was la st displayed, the mouse cursor will turn into an hourglas ...
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36 DSR Switch Instal ler/User Guide Click X or press Escape to exit without sending a Reset command to the PS/2 mouse and keyboard. Displaying version information The OSCAR interface enables you to display the ve rsion number of the sw itch firmware and any auxiliary devices connected to the switch. This info rm ation facilitates system troubleshoo ...
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Chapter 3: Local Port Operation 37 Figure 3.19: DSRIQ Selection Dialog Box 4. Select a DSRIQ module to view and click the V ersion button. The DSRIQ V ersion dialog box appears. For more informati on on loading firmware, see Appendix A . Figure 3.20: DSRIQ V ersion Dialog Box 5. Click X to close the DSRIQ V ersion dialog box. ...
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38 DSR Switch Instal ler/User Guide ...
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39 CHAPTER 4 T erminal Operations The Console Menu Each DSR switch may be configured at the ap pliance level through the Console menu interface accessed through th e SETUP port on the back of the switch. All terminal comman ds are accessed through a terminal or PC running termin al emu lation software. NOTE: This is NOT the recommended method for s ...
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40 DSR Switch Instal ler/User Guide terminal emulation software to access the Console menu interface. Actually , the terminal may be connected at any time, even wh en the switch is already powered. Figure 4.1: Console Main Menu 2. The Console Main menu displays. T ype 1 and press Enter for the Network Configuration option. The Network Configuration ...
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Chapter 4: Terminal Operations 41 Figure 4.2: Network Co nfiguration Menu 3. T ype 1 and press Enter to set your network speed. When possible, you should set your connection manually witho ut rel ying on the auto negotiate feature. After you press Enter , you will be returned to the Network Confi guratio n menu. 4. T ype 2 and press Enter to specif ...
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42 DSR Switch Instal ler/User Guide Other Console Main Menu Options Besides the Network Configuration option, the Cons ole Main menu of the DSR switch features the following menu items: Security Configurat ion, Firmware Management, Enable D ebug Messages, Restore Factory Defaults, Reset Appliance and Exit. Each is discussed below. Security C onfigu ...
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Chapter 4: Terminal Operations 43 6. Enter the password for the user , then re-enter the password to confirm it . 7. Enter 0 (zero) to exit. T o re move a user from the DSR switch dat abase: 1. From the Console Main menu, type 2 and press Enter to access the Security Configuration menu option. 2. T ype 1 and press Enter to access the Local User Acc ...
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44 DSR Switch Instal ler/User Guide replication system to another. The certificate can also be re moved using the Console menu accessed via the SETUP port on the DSR switch. See the Reset Cert ificates section. See the DSView Installer/User Guide for more information on software security. Firmware Management This menu contains t he FL ASH Download ...
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Avocent DSR1020 - page 55
45 APPENDICES Appendix A: FLASH Upgrades The DSR switch FLASH upgrade feature allows you to update your appliance with the latest firmware available. This update can be performe d us ing th e DSView software or using a Trivial File Transfer Protocol (TFTP) server. After the FLASH memory is rep rogrammed with the upgrade, the DSR sw it ch performs a ...
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Avocent DSR1020 - page 56
46 DSR Switch Instal ler/User Guide 10. The DSR switch will begin the FLA SH upgrade pr ocess. On-screen indicators will display the upgrade progress. When the upload is compl ete , the DSR switch will reset and upgrade the internal subsystems. 1 1. Once the upgrade is complete, a verifi ca ti on message will appear on-screen. ...
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Avocent DSR1020 - page 57
Appendices 47 Appendix B: Using DSV iew Sof tware Over a Modem Connection An external modem may be attached to the DS R switch. This modem may be used to access the switch when an Ethernet connection is not available. A modem/PPP dial-up connecti on must be establishe d before the remote oper ation is enabled. The dial-up connection option s should ...
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Avocent DSR1020 - page 58
48 DSR Switch Instal ler/User Guide Appendix C: Using DSRIQ-SRL Modules The DSRIQ-SRL module is a serial -to-VGA converter which permits VT100-capabl e devices to be viewed from the DSR switch local po rt or by using the DSView software. The actual serial data is not accessed, but is merely displayed. All serial da ta coming from the target device ...
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Avocent DSR1020 - page 59
Appendices 49 • Enter Sends: This option enables you t o sp ecify the keys that are transmitted when Enter is pressed. A vailable opt ions are <CR> (Ent er), wh ich mov es the cursor to the left side of the screen, or <CR><LF> (Enter-Linef eed), which moves the cursor to the left side of the screen and down one line. • Receive ...
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Avocent DSR1020 - page 60
50 DSR Switch Instal ler/User Guide T o configure a DSRIQ-SRL module: 1. Press Ctrl-F8 . The Configuration Screen will appear . 2. Select a parameter to change. Y ou can navigate the Configuration Screen using th e Up Arrow and Down Arro w keys. 3. Modify the selected value using the Left Arrow and Right Arrow k eys. 4. Repeat steps 2 and 3 to modi ...
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Avocent DSR1020 - page 61
Appendices 51 T o use History mode: 1. Press Ctrl-F9 . The mode will display as History . 2. Press one of the following key comb in ations to perform the indicated action: • Home : Move to the top of the buffer . • End : Move to the bottom of the buffer . • Page Up : Move up one buffer page. • Page Down : Move down one buf fer page. • Up ...
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Avocent DSR1020 - page 62
52 DSR Switch Instal ler/User Guide Appendix D: UTP Cabling The following informat ion is intended to bri ef you on various aspects of connection me dia. The performance of a DSR switching system depends on high quality connections. Po or quality or poorly installed or maintained cabli ng can dim in ish DSR system performance. NOTE: This appendix i ...
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Avocent DSR1020 - page 63
Appendices 53 Cabling inst allation, ma intenance and safety tip s The following is a list of important safety considerat ions that should be reviewed prior to installing or maintaining your cables: • Keep all CA T 5 runs to a maximum of 10 meters each. • Maintain th e twists of the pairs all the way to the point of terminatio n, or no more tha ...
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Avocent DSR1020 - page 64
54 DSR Switch Instal ler/User Guide Appendix E: T echnical S pecifications T able E.1: DSR Switch Pro duct Specifications Server Port s Number 16 (DSR1020/2020/4020/8020 switches) T y pes DSRIQ-PS/2, DSRIQ-USB, DSRIQ-VSN (Sun VGA), DSRIQ-WSN (Sun 13W3) and DSRIQ-SRL modules Connectors RJ-45 Sync T ypes Separate horizontal and vertical Plug and Play ...
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Avocent DSR1020 - page 65
Appendices 55 SPC Device Port Number 1 Ty p e RJ-45 USB Device Port Number 4 Ty p e USB 1.1 Dimensi ons Height x Width x Depth 1.72 x 17.00 x 10.98 in; 1U form factor (4.37 x 43.18 x 27.98 cm) Weight 7.3 lbs (3.31 kg) without cables Power Supply AC-input Power 40 W maximum AC-input Range 100 - 240 V AC AC-input Current Rating 0.5 A AC-input Cable 1 ...
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Avocent DSR1020 - page 66
56 DSR Switch Instal ler/User Guide Appendix F: Sun Ad vanced Key Emulation Certain keys on a standard Type 5 (US) Sun keyboard can be emulated by key press sequences on a PS/2 keyboard. To enable Sun Advanced Key Em ulation mode and use th ese keys, press and hold Ctrl+Shift+Alt and then press the Scroll Lock key. The Scroll Lock LED blinks. Use t ...
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Avocent DSR1020 - page 67
Appendices 57 For example: For Stop + A , press and hol d Ctrl+Shift+Alt and press Scroll Lock , then F1 + A . These key combinations will work wi th the DSRIQ-USB module (if your Sun sy stem comes with a USB port) as well as the Sun DSRIQ-VSN an d DSRIQ-WSN modu les. With the exception o f F12 , these key combinations are not reco gnized by Micros ...
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58 DSR Switch Instal ler/User Guide Appendix G: T echnical Support Our Technical Support staff is ready to assist you with any installati on or operating issues you encounter with your Avocent product. If an issue should develo p, follow the steps below for the fastest possible service: 1. Check the pertinent section of the manual to see if the iss ...
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Avocent DSR1020 - page 69
59 INDEX Numerics 1000BaseT Ethernet 1, 5, 54 100BaseT Ethernet 5, 54 10BaseT Ethernet 5, 54 A access direct 13 DSRIQ module 14 DSRIQ Terminal Applications menu 10 OSCAR interface Broadcast dialog box 25 Commands dialog box 33 Devices dialog box 21 Flag dialog box 24 Main dialog box 13 Menu dialog box 22 Names dialog box 19 Screen Saver dialog box ...
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60 DSR Switch Instal ler/User Guide disconnect dialog box 34, 35 DSRIQ modules 14 flag 24 target device 15 user 34 user connections 34 users 33, 34, 35 Display Versions 33 DSR switch 1 comes with 7 Features 1 Installation 5 Model Comparison 3 Network Conf iguration 3 port 21 Product Specification s 54 DSR switch database add user 42 remove user 43 ...
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Index 61 I Installation 5 Installation Overview 5 J Japanese Approvals ii Japanese Sun USB Keyboards 57 K keyboard dialog box 32 OSCAR interface 17 Korean Sun USB Keyboards 57 KVM 5 cable volu me 1 illustrated 6 switch 1 L Local country power cord 7 Local Port Operation 13 M Main Dialog Box 13 Menu OSCAR interface 17 modem 1, 2, 5, 7, 8, 47 illustr ...
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Avocent DSR1020 - page 72
62 DSR Switch Instal ler/User Guide P Point-to-Point Protocol 5 Position Flag 25 POWER LED 10 PPP 5 Print Screen 15 OSCAR interface 17 procedure To access the OSCAR interface Broadcast dialog box 25 To access the OSCAR interface Commands dialog box 33 To access the OSCAR interface Devi ces dialog box 21 To access the OSCAR interface Flag dial og bo ...
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Avocent DSR1020 - page 73
Index 63 To set the keyboard country code fo r Sun servers 32 To set the Screen Saver options 30 To soft switch to a target device 15 To start the scan mode 28 To turn broadca sting off 27 To upgrade the DSR switc h firmware using the Console menu 45 To upgrade the DSR switc h firmware using the DSView software 45 To use History mode 51 To view cur ...
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Avocent DSR1020 - page 74
64 DSR Switch Instal ler/User Guide ...
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Avocent DSR1020 - page 75
INSTRUCTIONS This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. DANGEROUS VOLTAGE This symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product’s enclosure that may be of sufficient m ...
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Avocent DSR1020 - page 76
For T echnical Support: Avocent Corporation 4991 Corporate Drive Huntsville, Alabama 35805-6201 USA Tel: +1 256 430 4000 Fax: +1 256 430 4031 590-4 1 9-00 1A Avocent International Ltd. Avocent House, Shannon Free Zone Shannon, County Clare, Ireland Tel: +353 6 1 7 1 5 292 Fax: +353 6 1 47 1 87 1 Avocent Asia Pacifi c Singapore Branch Offi ce 1 00 ...
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