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Black Box SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4 YOU CAN’T Switch Ports from the Keyboard

Models: SW725A-R4 SW722A-R4 SW723A-R4 KV3108SA-R4 SW724A-R4 SW721A-R4

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CHAPTER 6: Troubleshooting

6.2.2YOU CAN’T SWITCH PORTS FROM THE KEYBOARD

A. Can you do anything from the keyboard? If not, the keyboard strand of your MKM cable has probably come loose. Reconnect it.

B. The ServSwitch might have lost power for less than three seconds. (This can cause the keyboard to lock up.) Disconnect the keyboard and plug it back in.

C. The keyboard might simply have gotten a little off kilter. If the Switch can see the keyboard at all, try reinitializing the keyboard with the Reset command, [Ctrl] R (see Section 4.3.6).

D. The keyboard mode that the currently selected CPU port is set for might not match the mode that the CPU on that port expects. Use the on-screen display to change the port’s mode (see Section 5.3.2). Sometimes this situation can confuse the CPU or keyboard so badly that it is necessary to reboot the CPU or to reset the keyboard by unplugging it and plugging it back in.

E. For PS/2 type equipment, if the keyboard and mouse strands of either the CPU cable or the MKM cable have been reversed, plug them into the proper ports.

F. You might be using the keyboard incorrectly. Make sure to use the left Control key to start port-switching commands. Make sure to use the numeric keys at the top of the keyboard rather than the numeric keypad when you type in port numbers. Make sure to release the Control key before you start typing in a port number. Make sure you don’t wait too long before you enter a port number. Make sure you don’t accidentally hit keys such as Shift, Caps Lock, or Alt.

6.2.3CHARACTERS THAT YOU TYPE COME UP WRONG OR MISSING

The keyboard mode that the currently selected CPU port is set for might not match the mode that the CPU on that port expects. See item C under Section 6.2.2.

6.2.4YOU CAN’T SEEM TO SCAN OR SWITCH TO CERTAIN PORTS AT ALL

A. The “Maximum computers” setting is too low. (If any of the CPUs you can access are receiving garbage characters, this is a good indicator.) Set “Maximum computers” to match the number of CPUs in your system (see Section 5.2.3).

B. The “Expansion units” and/or Expansion width” setting is wrong. To reach all ports, set Units equal to the number of submasters in your system, and Width equal to the greatest number of CPUs you have on any submaster (see Sections 5.2.4 and 5.2.5).

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Black Box SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4, SW723A-R4, SW725A-R4 manual YOU CAN’T Switch Ports from the Keyboard
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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.