Cisco WS-C3560E-48PD-SF Command Reference - Page 152

interface vlan Chapter 2 Catalyst 3560 Switch Cisco IOS Commands interface vlan Use the interface vlan global configuration command to create or access a dynamic switch virtual interface (SVI) and to enter interface configuration mode. Use the no form of this command to delete an SVI. interface vlan vlan-id no interface vlan vlan-id Syntax Description vlan-id VLAN number. The range is 1 to 4094. Defaults The default VLAN interface is VLAN 1. Command Modes Global configuration Command History Release 12.1(19)EA1 Modification This command was introduced. Usage Guidelines SVIs are created the first time that you enter the interface vlan vlan-id command for a particular VLAN. The vlan-id corresponds to the VLAN-tag associated with data frames on an ISL or IEEE 802.1Q encapsulated trunk or the VLAN ID configured for an access port. Note When you create an SVI, it does not become active until it is associated with a physical port. If you delete an SVI by entering the no interface vlan vlan-id command, the deleted interface is no longer visible in the output from the show interfaces privileged EXEC command. Note You cannot delete the VLAN 1 interface. You can re-instate a deleted SVI by entering the interface vlan vlan-id command for the deleted interface. The interface comes back up, but the previous configuration is gone. The interrelationship between the number of SVIs configured on a switch and the number of other features being configured might have an impact on CPU utilization due to hardware limitations. You can use the sdm prefer global configuration command to reallocate system hardware resources based on templates and feature tables. For more information, see the sdm prefer command. 2-120 Catalyst 3560 Switch Command Reference 78-16405-05