parameters entered about the packet, the output provides lookup table results and port maps used to calculate forwarding destinations, bitmaps, and egress information. Most of the information in the output from the command is useful mainly for technical support personnel, who have access to detailed information about the device application-specific integrated circuits (ASICs). However, packet forwarding information can also be helpful in troubleshooting. Using the show debug command The show debug command is entered in privileged EXEC mode. This command displays all debug options available on the switch.
To view all conditional debug options run the command show debug condition The commands can be listed by selecting either a condition identifier or all conditions. To disable debugging, use the no debug all command. Caution Because debugging output is assigned high priority in the CPU process, it can render the system unusable. For this reason, use debug commands only to troubleshoot specific problems or during troubleshooting sessions with Cisco technical support staff. Moreover, it is best to use debug commands during periods of lower network traffic and fewer users.
Debugging during these periods decreases the likelihood that increased debug command processing overhead will affect system use. Configuring OBFL We recommend that you do not disable OBFL and that you do not remove the data stored in the flash memory. Caution Verifying Troubleshooting of the Software Configuration Displaying OBFL Information Table 2: Commands for Displaying OBFL Information Troubleshooting the Software Configuration Using the show debug command Command Purpose show onboard switch switch-number clilog Device# show onboard switch 1 clilog Displays the OBFL CLI commands that were entered on a standalone switch or the specified stack members.
show onboard switch switch-number environment Device# show onboard switch 1 environment Displays the UDI information for a standalone switch or the specified stack members and for all the connected FRU devices: the PID, the VID, and the serial number. Troubleshooting the Software Configuration 22