Black Box SW723A-R4, SW722A-R4, KV3108SA-R4 Troubleshooting, Restoring Factory-Default Settings

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CHAPTER 6: Troubleshooting

6. Troubleshooting

The first two sections of this chapter discuss things to try when problems arise in a ServSwitch system. If the trouble you’re having with the Switch is something you haven’t seen before, or if the trouble seems minor, try the procedures detailed in Section 6.1 before doing anything else. The second section of this chapter suggests possible causes of and solutions to frequently encountered problems; if the trouble is chronic, see Section 6.2. Sections 6.3 and 6.4 discuss what’s involved in calling Black Box and shipping your Switch.

CAUTION!

Do not open the ServSwitch’s cover. You could easily damage the Switch and attached devices, and if the Switch is powered you could hurt yourself as well.

6.1 Restoring Factory-Default Settings

If you’re having difficulty with a ServSwitch, something that often helps is resetting the Switch to its factory defaults. Follow these steps carefully:

1.Make sure that the ServSwitch, any submasters attached to it, and all CPUs directly or indirectly connected to it are turned OFF.

2.Press and hold in the  or “–” (previous port) button on the front of the Switch. While holding in this button, turn the Switch back ON.

3.Wait until the red (SELECT) LED of the Switch’s highest-numbered port (port 4 on a 4-port unit, port 12 on a 12-port unit, etc.) lights up, then release the minus button.

4.Cycle power to the Switch (push the ON/OFF button once to turn the Switch OFF, then push it again to turn the Switch ON).

5.Select Port 1 on the ServSwitch. Power up the device on Port 1; if the device is a CPU, wait for it to go completely through its boot-up process. Then select Port 2, power up that device, and so on.

6.Starting with the lowest-numbered CPU and proceeding to the highest- numbered one, power up the CPUs on the Switch’s submasters one at a time, waiting for each to boot completely before going to the next.

Now reconfigure the box to your desired settings. If you’re still having difficulty, refer to Section 6.2. If it doesn’t help you to solve your problem, call Black Box for technical support.

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Contents Customer Support Information Step-By-Step Quick Install Guide for the ServSwitch Servswitch Quick Install Guide Attach your keyboard and mouse this way PS/2 equipment shown Connection sequence User-Station Connections PS/2 type user-station connections PC/AT type user-station connections RS/6000 type user-station connections SGI type user-station connections Cascade Connections Optional CPU Connections Servswitch Quick Install Guide PS/2 type CPU connections Servswitch Quick Install Guide PC/AT type CPU connections standard cable RS/6000 type CPU connections SGI type CPU connections RS-232 connection to DB9 male computer port FA042 Power Connection Page Copyright 2000. Black Box Corporation. All rights reserved Welcome to the ServSwitchTM Family SW721A-R4SW723A-R4 SW722A-R4SW724A-R4 KV3108SA-R4SW725A-R4Servswitch FCC/IC Statements Servswitch NOM Statement Contents Table of Contents Servswitch Appendix Specifications StandardsSpecifications Maximum Altitude Introduction Operating FeaturesComplete Package Servswitch Front panel of a 2 to 1 ServSwitch SW721A-R4 Front PanelON/OFF Rear Panel CPU NMonitor Cable Requirements Equipment RequirementsInstallation Quick Setup GuideInstallation Procedure Connecting Cpus Connecting Submasters Optional Kernel is bad, load new kernel through serial port Chapter Cascading in ServSwitch Systems Cable Requirements for Expansion Basic ServSwitch cascading Cascading with Matrix ServSwitch submasters Kernel is bad, load new kernel through serial port Installation Operation Hardware and Keyboard Commands Guidelines for Using the ServSwitch with Your EquipmentOperation Hardware and Keyboard Commands Monitor Video Quality vs. Distance for Original Serv Cables Video Quality vs. Distance for Coaxial Cables Keyboard-Command Summary ServSwitch’s Keyboard CommandsScan OFF Commands in Detail Scan Mode Reset Send Null Byte PS/2 Type Mice only Display Label Using the RS-232 Port Switching Ports Remotely Optional Upgrading the Firmware with Terminal-Emulation Software Receive successful Hit space to program Upgrading the Firmware with the DOS Copy Command Operation Hardware and Keyboard Commands Operation On-Screen Display OverviewOperation On-Screen Display Configure System Configure systemChanging the mouse type Servswitch Changing the maximum number of computers Configure System Expansion Units Configure System Scan Time Typematic Rate Configure Computers Configure computersChanging a computer’s name Changing a CPU port’s keyboard mode Changing a CPU port’s mouse type Configure Overlay Color SchemeResolution Background Color and Text Color Configure Overlay Computer Label Show Computer Number Configure Security 10. The Configure securityNew password Computer Select Window 11. The computer select windowTroubleshooting Restoring Factory-Default SettingsCommon Problems YOU CAN’T Switch Ports from the Keyboard Servswitch Scans or Switches to Empty or Nonexistent Ports Your Mouse DOESN’T Move the POINTER/CURSOR Your ON-SCREEN Display is not Synchronized Calling Black Box Shipping and PackagingAppendix a Nvram Factory Defaults Keyboard-Command SettingsOn-Screen Configuration Settings Option Default settingAccess time Seconds 16 hours, 39 minutes Appendix B Cable Product Codes Servswitch Appendix C Pinout of RS-232 Port Appendix D The LK461 Keyboard Key Pressed on Scan Code LK461 KeyboardAppendix E Rackmounting ServSwitch Figure G-1. Rackmount assemblyPage

SW725A-R4, SW722A-R4, SW723A-R4, KV3108SA-R4, SW724A-R4 specifications

The Black Box SW721A-R4, SW724A-R4, KV3108SA-R4, SW723A-R4, and SW722A-R4 are cutting-edge network switches that cater to the demanding needs of modern data environments. These models are designed to provide high performance, reliability, and advanced features suitable for both enterprise-level deployments and smaller networks.

The SW721A-R4 and SW724A-R4 are primarily layer 2 switches that support essential networking protocols such as IEEE 802.1Q for VLAN tagging, ensuring secure and efficient traffic management. With robust forwarding capabilities, these switches boast high-speed Gigabit Ethernet ports, which enable seamless data transfer and reduce latency in data-driven applications. Their fanless design also ensures quiet operation, making them ideal for office settings and noise-sensitive areas.

Another noteworthy addition is the KV3108SA-R4, a versatile KVM switch that provides remote management capabilities. This model can control multiple servers and computers from a single console, allowing IT personnel to streamline operations and reduce physical space requirements. With support for high-resolution video output and an intuitive user interface, the KV3108SA-R4 enhances usability while maintaining efficiency in server management.

The SW723A-R4 and SW722A-R4 models further enhance network capabilities with their advanced Layer 3 functions. These switches support static routing and dynamic routing protocols, making them suitable for complex networking scenarios. They are equipped with a comprehensive set of security features, including port security and access control lists (ACLs), ensuring that sensitive information is well-protected against unauthorized access.

All of these Black Box models operate on advanced technologies such as QoS (Quality of Service), which helps prioritize critical traffic and ensures optimal performance during peak usage periods. Additionally, they support Power over Ethernet (PoE), enabling the powering of network devices such as IP cameras and VoIP phones without the need for additional electrical outlets.

In summary, the Black Box SW721A-R4, SW724A-R4, KV3108SA-R4, SW723A-R4, and SW722A-R4 represent a fusion of performance, versatility, and security in network infrastructure. These switches are perfect for businesses looking to enhance their connectivity solutions, ensuring that they can meet the demands of an increasingly digital world while maintaining high standards of efficiency and reliability.
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