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Adding a Priority Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-58
Configuring the Severity Level for Event Log
Configuring the System Module Used to Select the Event Log
Messages Sent to a Syslog Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-59
Messages Sent to a Syslog Server . . . . . . . . . . . . . . . . . . . . . . . . C-60
Operating Notes for Debug and Syslog . . . . . . . . . . . . . . . . . . . . . . . C-60
Diagnostic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-62
Port Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-63
Ping and Link Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-63
Web: Executing Ping or Link Tests . . . . . . . . . . . . . . . . . . . . . . . C-64
CLI: Ping Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-65
Link Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-66
Traceroute Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-67
Viewing Switch Configuration and Operation . . . . . . . . . . . . . . . . . C-71
CLI: Viewing the Startup or Running Configuration File . . . . . . . . . C-71
Web: Viewing the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . C-71
CLI: Viewing a Summary of Switch Operational Data . . . . . . . . . . . C-72
Saving show tech Command Output to a Text File . . . . . . . . . . C-73
Customizing show tech Command Output . . . . . . . . . . . . . . . . . C-75
CLI: Viewing More Information on Switch Operation . . . . . . . . . . . C-78
Pattern Matching When Using the Show Command . . . . . . . . . C-79
CLI: Useful Commands for Troubleshooting Sessions . . . . . . . . . . . C-82
Restoring the Factory-Default Configuration . . . . . . . . . . . . . . . . . C-83
CLI: Resetting to the Factory-Default Configuration . . . . . . . . . . . . C-83
Clear/Reset: Resetting to the Factory-Default Configuration . . . . . C-83
Restoring a Flash Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-84
DNS Resolver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-87
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-87
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-88
Configuring and Using DNS Resolution with
DNS-Compatible Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-89
Configuring a DNS Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-90
Example Using DNS Names with Ping and Traceroute . . . . . . . . . . C-91
Viewing the Current DNS Configuration . . . . . . . . . . . . . . . . . . . . . . C-93
Operating Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-94
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