CHAPTER 3: Installation

say that CPUs 1 through 8 are “shared,” we mean that they can be accessed by either master at different times, not by both masters simultaneously.) Adding a third 4-port submaster unit would give you a total of 17 ports, and so on. (To reach all of the CPUs in cascaded systems like this, you must set Maximum computers, Width, and Units properly on the master unit; see Sections 5.2.3 through 5.2.5.)

3.3.1CABLE REQUIREMENTS FOR EXPANSION

To connect submaster units to a ServSwitch, you’ll need one ServSwitch-to- ServSwitch Expansion Cable for each submaster unit. You will also need a CPU Adapter Cable for each CPU you will be connecting to the submaster’s CPU ports. (Remember that one MKM Adapter Cable is required to connect the master unit to your keyboard, monitor, and mouse.) See Sections 3.2.2 through 3.2.4.

3.3.2INSTALLING A CASCADE

Laying out your ServSwitch system prior to installation will make the installation process go more smoothly. It will also help you to keep the port-selection numbers you’ll use in keyboard commands in a rational sequence. Figure 3-2 on the next page illustrates the proper layout and numbering of your submasters and CPUs.

Keep these restrictions in mind when you design your ServSwitch system:

•If you use original Serv Adapter Cables and Expansion Cables, the distance from any ServSwitch to any attached device should not exceed 20 ft. (6.1 m); the total length of original Serv cabling from any CPU to any monitor, keyboard, and mouse should not exceed 40 ft. (12.2 m). Depending on your application, these distances might be less; see Section 4.1.3.

•If you use coaxial Adapter Cables and Expansion Cables, the maximum distance from the ServSwitch to any attached device should not exceed 20 ft. (6.1 m) with typical monitors and video resolutions, but see the first Caution notice on page 22. Depending on your application, this distance might vary; see Section 4.1.3.

•The total number of CPU ports accessible by any ServSwitch master unit must not exceed 256.

•Do not use older (“-R2” product code or earlier) mini (SW721 or SW722) model ServSwitches as submasters in your ServSwitch system. Their cascading logic and command language is different from that of all other Serv type units.

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Black Box SW721A-R4, SW722A-R4, KV3108SA-R4, SW724A-R4, SW723A-R4, SW725A-R4 manual Cable Requirements for Expansion
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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.
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