CHAPTER 4: Operation

4.3 The Commands in Detail

4.3.1SELECTING A PORT FROM THE SHARED KEYBOARD

To select a port from your keyboard, press and release your keyboard’s left Control Key ([CTRL]), then press the number key corresponding to the number of your desired port ([1], [2], [3], or [4]). The ServSwitch Jr. MP will immediately switch to that port. You can always, of course, select any port by pressing its numbered button on the Switch’s front panel.

4.3.2SWITCHING TO THE NEXT OR PREVIOUS PORT

From the keyboard you can go forward or backward through the ServSwitch Jr. MP’s ports by selecting either the next or the previous port respectively. To switch to the next port, press and release the left Control Key ([CTRL]), then press the plus key (the key at the top of the keyboard marked with [=] and [+]). To switch to the previous port, press and release [CTRL], then press the minus key (the key at the top of the keyboard marked with [–] and [_]). The command is not case- sensitive. Do not use the [+] and [–] keys on the keyboard’s numeric pad; the Switch doesn’t recognize these.

4.3.3SCAN MODE

To enable scanning (switching from CPU to CPU in a continuous rotation) from the keyboard, press and release the left Control Key ([CTRL]), then press [S]. The ServSwitch Jr. MP will begin scanning sequentially from its currently selected port through the higher-numbered ports, then begin again at CPU Port 1. As it scans, it delays 1 to 15 seconds at each port. (This “Scan-Delay Time” is user-selectable; see Section 4.3.9.) To stop scanning, press and release [CTRL], then press [X]. You can also disable scanning by entering a Select Port command. (ServSwitch Jr. MP letter commands are not case-sensitive: You can enter upper- or lower-case letters.)

4.3.4RESET

This command, along with the commands described in the next two sections, comes in handy when certain problems arise. It will reset or refresh your shared equipment. Issue it if (a) your shared keyboard gets stuck or begins behaving oddly, (b) you need to send mouse data to a CPU that hasn’t enabled the mouse (this can happen if you boot up the CPU while the ServSwitch Jr. MP is off or disconnected), or (c) while using a PS/2 type mouse, you unplug it, then plug it back in. To issue the Reset command, press and release the left Control Key, then type [R]. (If you’re using a PS/2 type mouse, don’t issue this command to a PC type CPU that doesn’t have a mouse driver loaded. Many PCs will crash if you send them unexpected mouse data.)

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Black Box SW627A-R2, SW628A-R2 manual Commands in Detail
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SW627A-R2, SW628A-R2 specifications

The Black Box SW627A-R2 and SW628A-R2 are advanced network switches designed to enhance the efficiency and reliability of modern data networks. These switches are ideal for various applications, including data centers, enterprise networks, and industrial settings, providing robust performance and flexibility for a wide range of tasks.

The SW627A-R2 model features 24 Ethernet ports, allowing for seamless connectivity across a broad array of devices. Its 10/100/1000 Mbps auto-sensing capabilities ensure that all connected devices can communicate effectively, making it an excellent choice for businesses looking to maximize their existing infrastructure. The switch is designed with energy efficiency in mind, featuring IEEE 802.3az Energy Efficient Ethernet technology. This integration helps in reducing power consumption and minimizing operational costs without compromising performance.

On the other hand, the SW628A-R2 model takes things a step further by offering 48 ports, accommodating even larger networks with ease. This switch also supports Power over Ethernet (PoE), which allows it to deliver power to connected devices such as IP cameras, VoIP phones, and wireless access points, eliminating the need for additional power sources and simplifying network installation.

Both models support Layer 2 switching and feature advanced forwarding techniques such as store-and-forward and cut-through modes. They also come equipped with a user-friendly interface for easy configuration and management, with options for SNMP monitoring to ensure optimal performance and troubleshooting capabilities.

From a security perspective, both the SW627A-R2 and SW628A-R2 incorporate features such as VLAN support, port security, and access control lists (ACLs). These features help in segmenting network traffic, preventing unauthorized access, and enhancing overall network integrity.

In terms of durability, both switches are designed for robustness, with sturdy enclosures suitable for various environments. The fanless design also ensures silent operation, making them suitable for office settings.

Overall, the Black Box SW627A-R2 and SW628A-R2 network switches are designed to meet the demands of advanced networking environments, providing the necessary features and technologies to facilitate efficient, secure, and scalable operations. Whether for a small business or a large enterprise, these switches provide a reliable backbone for any network infrastructure.
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