Technical data

Brocade 6910 Ethernet Access Switch Diagnostic Guide 1
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Chapter
1Using Diagnostic Commands
How to use diagnostic commands
This chapter describes how to use Brocade diagnostic show commands to monitor and
troubleshoot the Brocade 6910 switch configuration. Show commands are accessible from the
Privileged Exec mode in the command line interface (CLI). Some show commands can be
configured to send output to a destination that you specify.
Many show commands are specifically designed to be used in conjunction with calls to Brocade
Technical Support. If you report a problem, the support engineer may ask you to execute one or
more of the diagnostic commands described in this guide.
Console Connection
To access the switch through the console port, perform these steps:
1. At the console prompt, enter the user name and password. (The default user names are
“admin” and “guest” with corresponding passwords of “admin” and “guest.”) When the
administrator user name and password is entered, the CLI displays the “Console#” prompt and
enters privileged access mode (i.e., Privileged Exec). When the guest user name and password
is entered, the CLI displays the “Console>” prompt and enters normal access mode (i.e.,
Normal Exec).
2. Enter the necessary commands to complete your desired tasks.
3. When finished, exit the session with the “quit” or “exit” command.
Show commands
Show commands provide information that is extremely helpful for troubleshooting. For most of the
environments discussed in this document, related show commands, show command output, and
output descriptions are included.
Many show commands generate output for a specific configuration.
show log
Syntax: show log {flash | ram}
The show log command allows you to view the system log. Command output similar to the following
is displayed.
Console# show logging ram
Syslog logging : Enabled
History logging in RAM : Level debugging