The supportshow command is the standard and primary command used on Brocade switches running Fabric OS (FOS) to gather and display a comprehensive set of diagnostic data. This output includes switch status, configuration parameters, port statistics, error logs, and other system information. The collected data is essential for troubleshooting and is typically requested by technical support for analysis. The command consolidates the output of numerous other individual show commands into a single, extensive report.

A. show all: This is not a valid command in Brocade Fabric OS. The show command requires a specific argument (e.g., show switch, show port) and does not have an all option.

B. show tech-support details: This command syntax is not used in Brocade Fabric OS. It is more characteristic of other networking vendors, such as Cisco, for gathering support information.

1. Dell EMC Connectrix B-Series Fabric OS 8.2.1 Command Reference Manual:

Page 789, Chapter 4 "Command Pages": Describes the supportshow command: "Use the supportshow command to display a large amount of information about the switch and its attached devices. This command is intended for use by your support provider for problem diagnosis." This manual does not list show all or show tech-support details as valid commands.

2. Broadcom Inc., Brocade Fabric OS Command Reference Manual, 9.0.x:

Page 1001, "supportshow" section: "The supportshow command gathers output from many commands, such as switchshow, ipaddrshow, configshow, portshow, and errdump, and displays the information on the screen." This confirms its function as a data-gathering tool for support purposes.