CHAPTER 4: Operation

4.2 Keyboard-Command Summary

Table 4-3 on this page and the next page summarizes the commands that can be sent to the ServSwitch Jr. MP. To enter any command at the shared keyboard, first press and release the left Control Key ([CTRL]). This cues the Switch to look for commands from the keyboard. Then enter the command followed by any arguments you wish to specify (the port number, for example).

Letter commands are not case-sensitive; they are all shown in uppercase for clarity only.

When you enter numeric commands or arguments, use only the numbered keys at the top of your alphanumeric keyboard. Numbers entered from the numeric keypad to the right will not be recognized as valid commands.

All of these commands have a two-second timeout between characters. This means that if you begin entering a command, but you stop for more than two seconds at any time before you type the final character, the command is aborted and the ServSwitch Jr. MP returns to normal operation. This keeps the Switch from getting stuck waiting for you to finish the command.

The [CTRL] character is always passed through to the CPU. The command characters and operands, however, are absorbed by the ServSwitch Jr. MP and are not sent to the CPU.

Many of these commands have factory-default values (see Appendix A) that can be reloaded if your Switch becomes badly misconfigured; see Section 5.1.

Table 4-3. The ServSwitch Jr. MP’s Keyboard Commands

Command

Keystroke Sequence

Description

 

 

 

Select Port

[CTRL] xxx

Connects your shared monitor, keyboard, and

 

(xxx = a 1- to 3-digit port

mouse (user station) to the specified port.

 

number)

 

 

 

 

Switch to the

[CTRL] +

Switches to the next port in sequence.

Next Port

 

 

 

 

 

Switch to the

[CTRL] –

Switches to the previous port in sequence.

Previous Port

 

 

 

 

 

Scan ON

[CTRL] S

Turns Scan mode ON, causing the ServSwitch Jr.

 

 

MP to start scanning sequentially from the current

 

 

port through the remaining ports and then begin

 

 

again at Port 1.

 

 

 

23

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Black Box SW627A-R2, SW628A-R2 manual Keyboard-Command Summary, ServSwitch Jr. MP’s Keyboard Commands
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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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