Understanding of concepts such as trunks, native VLANs, and access

In the VLAN port mode of the switch: access,trunk

！！！ The PC does not recognize the frame with tag, so all the tags sent to the host frame will be stripped.

1. Access mode

The frame of all VLANs can be sent at this port, and the tag on the frame will be stripped off, which becomes an untagged frame sent to the link;

On this port, the untagged frame on the link is hit on a specific tag on this port and then received;

That is, the frames on the access link are untagged;

2.trunk mode

At this port can accept and send multiple VLANs (the default all VLAN can be changed) frame, and will not change (peel or add) the frame tag;

The concept of the native VLAN functions on the TURNK port;

The native VLAN is a concept that functions only for this switch, and all non-partitioned ports are automatically partitioned into the native VLAN by default, and the default native VLAN of the switch is VLAN 1;

When the TURNK port sends a frame belonging to the native VLAN, the tag of the frame will be stripped;

When the trunk port receives the frame of the untagged, it will give the frame the frame of the native VLAN of the switch;

Understanding of concepts such as trunks, native VLANs, and access