SERVSWITCH™

6.Press the Enter key on the PC’s keyboard. (If your keyboard does not have an Enter key, press the Return key instead.) LED 3 will go dark briefly while the ServSwitch reboots itself and runs its new firmware. The Switch should then light LED 4 and send some diagnostic information about itself. (In particular, make sure that the firmware-revision level it reports matches the revision level of the new firmware.) It should then send the message:

Hit enter to continue

(If you get an error message at any time during this phase, call Black Box for technical support.)

7.Press the Enter (or Return) key again. The Switch should return to normal operation with port 1 selected (LED 1 lit).

This completes the terminal-emulation version of the firmware-upgrade procedure. Your Switch should now be ready for continuous operation.

4.4.3.B Upgrading the Firmware with the DOS COPY Command

Alternatively, you can, if you choose, upgrade a unit’s firmware with the DOS COPY command. Use caution: The ServSwitch will attempt to send text messages back to you during this process, but DOS has no way of properly receiving and displaying them; what’s more, this “unexpected” serial data could cause your computer to crash. If you want to use this method anyway, take these steps:

1.Connect one of your PC’s serial ports to the Switch’s RS-232 port as described in Section 4.4.1.

NOTE

Normally only three wires are necessary to the ServSwitch: transmit, receive, and ground. However, when you use DOS to copy the configuration file to the Switch, DOS must see a high DSR signal input (Pin 6 on PC COM ports, whether they are DB9 or DB25 type) in order for the COPY command to work. The Switch provides this signal using the DTR (Pin 2) output from its RS-232 Port; you can use standard cable and our standard FA043 or FA044 adapter to make this connection.

2.If the MODE command in your version of DOS supports data rates as high as 57,600 bps, send a MODE command to set the data rate of the PC’s serial port to 9600 or 57,600 bps and its data format to 8 data bits, no parity, and 1 stop bit. For example, if you are using port COM1:, you would issue the command “MODE COM1:9600,8,N,1” or “MODE COM1:57600,N,8,1”.

If your DOS version’s MODE command doesn’t natively support 57,600 bps, you will have to either upgrade at 9600 bps or get one of the several third- party utility programs that either extend the MODE command or provide some other means of setting your serial ports to higher data rates. Call Black Box for technical support if you have difficulty finding such a utility program.

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Black Box SW725A-R4, SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4, SW723A-R4 Upgrading the Firmware with the DOS Copy Command
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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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