Cisco IOS Commands

Recently I have been working on some Cisco equipment. Here are some commands that I found to be really useful.


Find the MAC from an IP address
Show ip arp (ip address)

Find the port number associated with the MAC address:
Show mac-address-table address (MAC Address)

Adding a Virtual LAN (VLAN) or Changing the VLAN on a port:
Once you are in configuration mode and set your interface or range of interfaces – All you have to do is..
Switchport access vlan (number)

But, My most used command is:
Show interface status – This will give you a summary of all the ports, descriptions (if present), connected/notconnected, and speed…



I think that I will need to start studying for that CCNA…