VLAN 802.1Q

VLANs partition a physical switch into isolated broadcast domains. 802.1Q inserts a 4-byte tag into Ethernet frames to carry the VLAN ID across trunk links.

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VLAN Table
PortHostVLANMode
Fa0/1PC-A10Access
Fa0/2PC-B10Access
Fa0/3PC-C20Access
Fa0/4PC-D20Access
802.1Q Tag Structure
TPID (16b)
PCP (3b)
DEI
VID (12b)
0x8100
-
0
-
Event Log