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Viewing Switch Configuration and Operation . . . . . . . . . . . . . . . . . C-65
CLI: Viewing the Startup or Running Configuration File . . . . . . . . . C-65
Web: Viewing the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . C-65
CLI: Viewing a Summary of Switch Operational Data . . . . . . . . . . . C-65
Saving show tech Command Output to a Text File . . . . . . . . . . C-67
Customizing show tech Command Output . . . . . . . . . . . . . . . . . C-68
CLI: Viewing More Information on Switch Operation . . . . . . . . . . . C-71
Pattern Matching When Using the Show Command . . . . . . . . . C-72
CLI: Useful Commands for Troubleshooting Sessions . . . . . . . . . . . C-75
Restoring the Factory-Default Configuration . . . . . . . . . . . . . . . . . C-76
CLI: Resetting to the Factory-Default Configuration . . . . . . . . . . . . C-76
Clear/Reset: Resetting to the Factory-Default Configuration . . . . . C-76
Restoring a Flash Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-77
DNS Resolver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-79
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-79
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-80
Configuring and Using DNS Resolution with
DNS-Compatible Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-81
Configuring a DNS Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-82
Example Using DNS Names with Ping and Traceroute . . . . . . . . . . C-83
Viewing the Current DNS Configuration . . . . . . . . . . . . . . . . . . . . . . C-85
Operating Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-86
Event Log Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-87
D MAC Address Management
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Determining MAC Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
Menu: Viewing the Switch’s MAC Addresses . . . . . . . . . . . . . . . . . . . . D-4
CLI: Viewing the Port and VLAN MAC Addresses . . . . . . . . . . . . . . . . D-5
Viewing the MAC Addresses of Connected Devices . . . . . . . . . . . . . D-7
E Monitoring Resources
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
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