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Computers & Technology
common cisco switch commands
SpiderTip
Posted: 2010-11-28
These are some common Cisco Switch Commands:
show mac address-table or show mac-address - shows the MAC address table of the switch, shows both static and dynamic addresses.
show mac address-table dynamic - shows only dynamic MAC addresses.
show mac-address-table agin-time - Sets the MAC address expiration time in seconds.
show arp - is used to display arp cache on cisco router.
conf t - Puts the switch or router into configuration mode.
conf t - is used to put the switch or router to global configuration mode. configure terminal will do the same thing.
show vlan - Will show all the VLANs on the switch.
show vlan breif - Short list of VLan items.
interface vlan1 - used to select specified vlan interface.
banner - used to display prompt messages on the router or switch.
exec-timeout 0 0 - used to setup the timeout for the router/switch. First digit is minutes, second digit is seconds and 0 0 will disable it.
ip address 0.0.0.0 255.255.255.0 - used to assign IP Address and correct subnet mask for switch management port.
ip default-gateway 0.0.0.0 - used to manually assign default gateway to the switch.
switchport port-security - is used to setup security for specific port on the switch.
int fast 0/# - is used to select specific interface or port on the switch.
interface range 0/1 - 24 - is used to select range of switch ports to apply to spcific command.
show ip route - is used to display the routing table.
ip route 192.168.1.1 255.255.255.0 ethernet0 - is used to setup static route.
switchport mode access - sets teh port as access port.
switchport port-security - is used to set the port security for specific MAC address.
show config - is used to show cisco switch or router configuration.
show config - is used to show cisco switch or router configuration.
password password - is used to enable password for cisco switch/router. Use logon after password comand.
no password password - is used to remove existing password.
enable - is used to change from user exec mode to privileged exec mode.
enable password - is used to enable privileged exec clear text password.
enable secret - is used to enable privileged exec secret or encripted password.
privilege level 15 - is used to set privilege exec mode on remote logon via telnet or ssh.
username name privilege level 15 password password - is used to set privilege exec mode for specific user.
reload - is used to reboot a cisco switch or router.
wr er - is used to erase the start configuration file.
setup - is used to enter cisco router/switch configuration mode.
copy start run - is used to save the configuration, w can also be used to do the samething.
show run - is used to display running configuration file.
copy [source] [destination] - is used to copy a file. (common use; running-config and start-config).
show version - is used to display router IOS information.