Troubleshooting Commands for the ICND1 and ICND2 Certification Exams
When problems arise on a Cisco device there are a number of show commands you can use to help identify what the problem is. The following is a list of popular show commands you should know for both the ICND1 and ICND2 certification exams:
|Show running-config||Used to display the running configuration stored in VRAM.|
|Show startup-config||Used to display the startup configuration stored in NVRAM.|
|Show ip interface brief||Used to show a summary of the interfaces and their status.|
|Show interfaces||Used to display detailed information about each interface.|
|Show interface serial 0/0||Used to display detailed information about a specific
|Show ip route||Displays the routing table.|
|Show hosts||Displays the host name table.|
|Show controller serial0/1||Used to display whether the serial interface is a DCE or DTE
|Show ip protocols||Used to display what routing protocols are loaded.|
|Show cdp neighbors||Used to display basic information about neighboring devices
such as name, type of device, and model.
|Show cdp neighbors detail||Used to display detailed information about neighboring devices
such as name, type of device, model, and IP address.