Native VLAN

Untagged ingress packets are destined to the native VLAN. An interface can be configured in one of 2 native modes - Native-Untagged or Native-Tagged.

A native-untagged port accepts any untagged or tagged (with native VLAN ID) traffic on ingress.

Packets that egress on a native-untagged port in the native VLAN will not have an 802.1Q header. A native-tagged port accepts only tagged traffic (with native VLAN ID) on ingress.

Any untagged packet ingress on a native-tagged port is always dropped. Packets that egress on a native-tagged port in the native VLAN will always have an 802.1Q header.

Relevant Configuration

Configure a VLAN as native

[standalone: master] > enable
[standalone: master] # configure terminal
[standalone: master] (config) # vlan 3
[standalone: master] (config vlan 3) exit
[standalone: master] (config) # interface ethernet 1/1
[standalone: master] (config interface ethernet 1/1) # switchport mode hybrid
[standalone: master] (config interface ethernet 1/1) # switchport access vlan 3

Show Commands to Validate Functionality

show interface switchport

Expected Results

  • Step 1: You can create a VLAN
  • Step 2: You can assign a native VLAN to the physical interface
  • Step 3: You can configure an IP address on the VLAN interface
  • Step 4: You can successfully ping the other switch’s VLAN interface

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