Cisco Switch Troubleshooting Commands with Examples

1. show interfaces

show interfaces gigabitEthernet 1/0/1

2. show running-config
   show running-config
3. show spanning-tree
   show spanning-tree
4. show mac address-table
   show mac address-table
5. show arp
   show arp
6. show vlan
   show vlan
7. show log
   show log
8. show cdp neighbors
   show cdp neighbors
9. show interface status
   show interface status
10. show version
    show version
11. show port-security
    show port-security

12-show running-config interface
show running-config interface GigabitEthernet1/0/1

13. show ip interface brief
    show ip interface brief
14. show vlan brief
    show vlan brief
15. show processes cpu history
    show processes cpu history
16. show log | include
    show log | include %SYS-5-CONFIG_I
17. show ip route
    show ip route
18. show interface status
    show interface GigabitEthernet1/0/1 status
19. show etherchannel summary
    show etherchannel summary
20. show tech-support
    show tech-support