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Troubleshooting IOS Commands
EXEC mode ( Switch> enable )
Switch# show tech-support (or #sh tech)
Displays information for all features
Switch# show tech-support brief
Displays information only about the status of the device.
Switch# show version
Displays the configuration of the system hardware, the software version
Switch# show running-config
Displays the router configuration currently running.
Switch# show startup-config
Displays the router configuration stored in nonvolatile RAM (NVRAM).
Switch# show interfaces
Displays statistics for all interfaces configured.