Native VLAN

[SathishkumarSaravanan0348]

Hello Experts,

What is the use of the Native VLAN? I know that the frames are sent untagged between the trunk ports. 

Why there require to send the packets in untagged format? Is there any reasons?

Regards,

Sathishkumar.

[Deepak Kumar]

Hi,

The concept of native VLAN is untagged the frames while sending out and receive the untagged packet for the mentioned VLAN ID.  A native VLAN is an 802.1Q concept: frames belonging to native VLAN are sent untagged.

A native VLAN concept has been introduced as a way to provide backward compatibility to a device that doesn't support VLAN tagging. if a switch port is configured to be a trunk unconditionally (regardless of what is connected to the port) without native VLAN concept only NIC that supports VLAN tagging could be connected to the port.

[SathishkumarSaravanan0348]

Many thanks for your answer. Can u please let me know the devices which wont support Vlan tagging?

[Deepak Kumar · Accepted solution]

Hi,

Non-Manageable switch, Your PC etc.