Switch Configuration and Switch Troubleshooting Commands list

 

We are showing here some important commands of switch configuration and switch troubleshooting commands.  

Switch Configuration

#hostname name

#enable secret

#history size

#logging synchronous

#[no] logging console

#exec-timeout

#line console 0

#line vty

#password

#login local

#username secret password

#crypto key generate rsa [modulus 360-2048]

#ip domain-name domain

#transport input [telnet, ssh, all, none]

#interface vlan number

#ip address ip-address subnet-mask

#ip address dhcp

#ip default-gateway ip-address

#ip name-server dns1-ip dns2-ip

#interface type port-number

#interface range type port-start-port-end

#[no] shutdown

#speed [10, 100, 1000, auto]

#duplex [half, full, auto]

#description text

#no duplex

#no speed

#no description

#no debug all

#undebug all

#reload

#copy running-config startup-config

#write erase

#erase startup-config

#erase nvram:

#quit

#enable

#disable

#configure terminal

#switchport mode [access, trunk]

#switchport port-security mac-address mac-address

#switchport port-security mac-address sticky

#switchport port-security maximum value

#switchport port-security violation [protect, restrict, shutdown]

#vlan vlan-id

#name vlan-name

#[no] shutdown vlan vlan-id

#vtp mode [transparent, client, server]

#switchport mode [access, dynamic auto, dynamic desirable, trunk]

#switchport trunk encapsulation [dot1q, isl, negotiate]

#switchport trunk native vlan vlan-id

#switchport nonegotiate

#switchport voice vlan vlan-id

#switchport trunk allowed vlan [add, all, except, remove] vlan-list

Switch Troubleshooting

#show running-config

#show running-config | interface type number

#show running-config | begin line

#show mac address-table dynamic [interface type number]

#show mac address-table secure [interface type number]

#show mac address-table static [interface type number]

#show mac address-table dynamic address MAC-address

#show mac address-table dynamic interface interface-id

#show mac address-table count

#show mac address-table aging-time

#clear mac address-table dynamic

#show mac address-table

#show interfaces [interface type number] status

#show interfaces [interface type number]

#show port-security interface type number

#show port-security

#show interfaces interface-id switchport

#show interfaces interface-id trunk

#show vlan [brief, id, name, summary]

#show vlan

#show vtp status

#show interfaces description

#show dhcp lease

#show crypto key mypubkey rsa

#show ip ssh

#show ssh

#show interfaces vlan number

#show ip default-gateway

#terminal history-size

#show history