Cisco ICND2 – Interpret the output of various show and debug commands to verify the operational status of a Cisco switched network

Chris Stark Cisco, ICND2

I have covered most show commands throughout the previous topics. Therefore I will list them quickly here plus a few others:

  • show ip interface brief
  • show flash:
  • show running-config
  • show mac-address-table
  • show vlan
  • show vlan brief
  • show interface switchport
  • show interface trunk
  • show vtp status
  • show vlan
  • show spanning-tree summary
  • show spanning-tree

As I’m using PacketTracer there isn’t much in terms of debugging commands for switches. I would highly recommend using physical switches if possible and build a small network and run some debug commands.

This might be useful –  command reference from a Cisco Catalyst 2950 switch.

*If there is anything you’d like to add or feel there’s a mistake, please feel free to comment and contribute.