Cisco IOS Basic CLI Configuration : Switch Port Command
Cisco IOS Basic CLI Configuration : Switch Port Command
1. Basic
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface vlan 1
Switch(config-if)#ip address 192.168.1.200 255.255.255.0
Switch(config-if)#no shutdown
Switch(config-if)#
%LINK-5-CHANGED: Interface Vlan1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
Switch(config-if)#exit
Switch(config)#ip default-gateway 192.168.1.1
Switch(config)#
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface fastethernet0/1
Switch(config-if)#duplex auto
Switch(config-if)#speed 10
Switch(config-if)#description PC1 connected
Switch(config-if)#exit
Switch(config)#interface range fastethernet 0/10 - 20
Switch(config-if-range)#description hello world
Switch(config-if-range)#exit
Switch(config)#exit
Switch#
%SYS-5-CONFIG_I: Configured from console by console
Switch#
2. Port Security
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface fastethernet0/1
Switch(config-if)#switchport mode access
Switch(config-if)#switchport port-security
Switch(config-if)#switchport port-security maximum 1
Switch(config-if)#switchport port-security mac-address 0060.70e5.cdd1
Switch(config-if)#switchport port-security violation shutdown
Switch(config-if)#exit
Switch(config)#
Switch(config)#int fast0/2
Switch(config-if)#switchport mode access
Switch(config-if)#switchport port-security
Switch(config-if)#switchport port-security maximum 1
Switch(config-if)#switchport port-security mac-address sticky
Switch(config-if)#switchport port-security violation protect
Switch(config-if)#exit
Switch(config)#
Switch#show port-security interface fastethernet0/2
Port Security : Enabled
Port Status : Secure-up
Violation Mode : Protect
Aging Time : 0 mins
Aging Type : Absolute
SecureStatic Address Aging : Disabled
Maximum MAC Addresses : 1
Total MAC Addresses : 1
Configured MAC Addresses : 0
Sticky MAC Addresses : 1
Last Source Address:Vlan : 0004.9A36.D069:1
Security Violation Count : 0
Switch#show port-security interface fastethernet0/1
Port Security : Enabled
Port Status : Secure-up
Violation Mode : Shutdown
Aging Time : 0 mins
Aging Type : Absolute
SecureStatic Address Aging : Disabled
Maximum MAC Addresses : 1
Total MAC Addresses : 1
Configured MAC Addresses : 1
Sticky MAC Addresses : 0
Last Source Address:Vlan : 0060.70E5.CDD1:1
Security Violation Count : 0
3. Port Security Actions
1.Note that the shutdown option does not actually add the shutdown subcommand to the interface configuration. Instead, IOS puts the interface in an error disabled (err-disabled) state, which makes the switch stop all inbound and outbound frames. To recover from this state, someone must manually disable the interface with the shutdown interface command and then enable the interface with the no shutdown command.
2. Port security does not save the configuration of the sticky addresses, so use the copy running-config startup-config command if desired.
