SERVSWITCH™

3.2.5POWERING UP THE SYSTEM

1A. 2-port model (SW721A-R4):Making sure that the connected CPUs and any connected submasters are OFF (powered down), take the output cord of the ServSwitch’s power supply and plug its 5-pin DIN male connector into the power jack on the rear panel of the Switch. Plug the power supply’s input cord into a working outlet.

1B. Other models: Making sure that the connected CPUs and any connected submasters are OFF (powered down), take the ServSwitch’s power cord and plug its IEC 320 female connector into the power inlet on the rear panel of the Switch. Plug its other end into a working outlet.

2.To power up the ServSwitch, push the ON/OFF button on its front panel (if it’s a 2-port unit) or move the ON/OFF switch on its rear panel to the “” (ON) position (if it’s another type of unit). The ServSwitch should boot normally, but if the unit’s firmware has become corrupted—probably as the result of a firmware upgrade going wrong—it will display this message on the attached monitor:

Kernel is bad, load new kernel through serial port

If you see this, you will need to download correct firmware to the unit as described in Section 4.4.3, starting at the point at which the unit is ready to receive the file at 9600 baud (9600 bps). (In this case, you must download the file at 9600 bps.)

3.Power up any directly connected CPUs and any connected submasters one by one, giving each one time to boot completely before turning ON the next one. When the CPUs are powered up after the ServSwitch, the Switch emulates all keyboard and mouse functions for automatic bootup. (You might want to issue a Keep Settings command after initial bootup, so that the Switch saves the mode settings it has autodetected to nonvolatile memory.)

4.Power up any CPUs connected to submasters one by one, giving each CPU time to boot completely before turning ON the next one.

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Black Box SW725A-R4, SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4 manual Kernel is bad, load new kernel through serial port

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.

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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.

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