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Default VLAN describtion

Default VLAN describtion

Created: Dec 3, 2018 01:20:53Latest reply: Dec 3, 2018 05:44:07 417 5 12 2

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Default VLAN

The default VLAN ID of an interface is called the port default VLAN ID (PVID). Frames processed in a switch all carry VLAN tags. When the switch receives an untagged frame, it adds a VLAN tag to the frame according to the default VLAN of the interface that received the frame. The PVID is used in the following scenarios:

When an interface receives an untagged frame, the interface adds a tag with the PVID to the frame and sends the frame to the switch for processing. When an interface receives a tagged frame, the tag is not added.
When an interface sends a frame in which the VLAN ID is the same as the PVID, the switch removes the tag from the frame before sending it out from the interface.

Each interface has a default VLAN. By default, the default VLAN ID of all interfaces is VLAN 1.

The default VLAN of an access interface is the VLAN allowed by the access interface. Changing the allowed VLANs will also change the default VLAN.
Trunk and hybrid interfaces allow multiple VLANs but have only one default VLAN. Changing the allowed VLANs will not change the default VLAN.

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Helpful (12) Favorite(2) Report

Tanzania163 Created Dec 3, 2018 06:05:21
Good case for learning defaut VLAN

yWX511501 Created Dec 3, 2018 01:21:44

it is clear

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DZKM Created Dec 3, 2018 01:41:18

Can you sent more IT basic skills?we want know more That's great ! ths for your share

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user_2915719 Created Dec 3, 2018 01:43:54

That's clear explanation, works for IP *******s like me

Default VLAN describtion-2812871-1

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dagui Created Dec 3, 2018 05:44:07

Can the Trunk and Hybrid Interface Modes Be Described in Details?

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