Configuring a VLAN Interface

Overview

By default, the native VLAN of all physical interfaces is VLAN 1, which can implement Layer 2 communication. To implement Layer 3 communication between users in different VLANs and network segments, you can configure the VLAN interface, which is a Layer 3 logical interface.

Procedure

Step1 In the configuration mode, create a VLAN.

The VLAN ID has been pre-configured in system from version 4.3.2 and you don’t need to configure it.

set vlans vlan-id <vlan-id> vlan-id <vlan-id>: specifies the VLAN tag identifier. The valid VLAN numbers range 1-4094. User can specify a range of VLAN numbers, e.g. 2,3,5-100.

set vlans vlan-id <vlan-id> vlan-id <vlan-id>: specifies the VLAN tag identifier. The valid VLAN numbers range 1-4094. User can specify a range of VLAN numbers, e.g. 2,3,5-100.

Step2 Specify the created VLAN as the native VLAN for a physical interface.

set interface gigabit-ethernet <interface-name> family ethernet-switching native-vlan-id <vlan-id>

set interface gigabit-ethernet <interface-name> family ethernet-switching native-vlan-id <vlan-id>

Step3 Associate a Layer 3 interface with the VLAN.

set vlans vlan-id <vlan-id> l3-interface <interface-name> l3-interface <interface-name>: specifies a name for the Layer 3 interface.

set vlans vlan-id <vlan-id> l3-interface <interface-name> l3-interface <interface-name>: specifies a name for the Layer 3 interface.

Step4 Configure an IP address for the VLAN interface.

set l3-interface vlan-interface <vlan-id> address <ipv4-address \| ipv6-address> prefix-length <prefix-number>

set l3-interface vlan-interface <vlan-id> address <ipv4-address \| ipv6-address> prefix-length <prefix-number>

Step5 Commit the configuration.

commit

commit

Verifying the Configuration

After the configuration is completed, in the configuration mode, use run show l3-interface vlan-interface <vlan-id> command to view the state, IP address, MAC address, VLAN, MTU, description and traffic statistics.

Other Configurations

To clear the configuration of VLAN interface, use delete l3-interface vlan-interface <vlan-id> command.