Troubleshooting
Commands
When
problems arise on Cisco devices, there are a number of show commands
you can use to help identify what the problem is. The following table lists
popular show commands:
Command(s)
|
Result
|
show
running-config
|
Displays
the running configuration stored in VRAM.
|
show
startup-config
|
Displays
the startup configuration stored in NVRAM.
|
show
ip interface brief
|
Shows
a summary of the interfaces and their status.
|
show
interfaces
|
Displays
detailed information about each interface.
|
show
interface serial 0/0
|
Displays
detailed information about a specific interface.
|
show
ip route
|
Displays
the routing table.
|
show
hosts
|
Displays
the host name table.
|
show
controller serial0/1
|
Displays
whether the serial interface is a DCE or DTE device.
|
show
ip protocols
|
Displays
what routing protocols are loaded.
|
show
cdp neighbors
|
Displays
basic information about neighboring devices such as name, type of device,
and model.
|
show
cdp neighbors detail
|
Displays
detailed information about neighboring devices such as name, type of
device, model, and IP address.
|
|
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