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Configuring Interfaces
Configuring Ethernet Interfaces
The VLAN interfaces must have been configured with the interface vlan command. The show running-config
privileged EXEC command displays the configured VLAN interfaces. VLAN interfaces not displayed by the show
running-config command cannot be used as interface-ranges.
All interfaces defined as in a range must be the same type (all Fast Ethernet ports, all Gigabit Ethernet ports, all
EtherChannel ports, or all VLANs), but you can combine multiple interface types in a macro.
This example shows how to define an interface-range named enet_list to include ports 1 and 2 and to verify the macro
configuration:
Switch# configure terminal
Switch(config)# define interface-range enet_list GigabitEthernet1/17 - 2
Switch(config)# end
Switch# show running-config | include define
define interface-range enet_list GigabitEthernet1/17 - 2
This example shows how to create a multiple-interface macro named macro1 and assign all of the interfaces in the range
to a VLAN:
Switch# configure terminal
Switch(config)# define interface-range macro1 fastethernet0/1 - 2, GigabitEthernet1/17 - 2
Switch(config)# interface range macro macro1
Switch(config-if-range)# switchport access vlan 20
Switch(config-if-range)# no shut
Switch(config-if-range)# end
This example shows how to enter interface range configuration mode for the interface-range macro enet_list:
Switch# configure terminal
Switch(config)# interface range macro enet_list
Switch(config-if-range)#
This example shows how to delete the interface-range macro enet_list and to verify that it was deleted.
Switch# configure terminal
Switch(config)# no define interface-range enet_list
Switch(config)# end
Switch# show run | include define
Switch#
Configuring Ethernet Interfaces
Default Ethernet Interface Configuration, page 32
Configuring the Port Type, page 33
Configuring Interface Speed and Duplex Mode, page 34
Configuring a Power Management Mode on a PoE Port, page 36
Budgeting Power for Devices Connected to a PoE Port, page 37
Configuring IEEE 802.3x Flow Control, page 39
Configuring Auto-MDIX on an Interface, page 40
Adding a Description for an Interface, page 41