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VLAN trunk function
The VLAN trunk function is a function to be used for communication between VLAN for a possibility of
switching when the VLAN tag is assigned and deleted. In order to carry out routing from the port which
belongs to multiple VLANs, it is relayed to other layer 3 switches. In the port, VLAN is tagged so that it can be
recognized that to which VLAN it belongs, and the frame with VLAN tag is received, routed and relayed with
layer 3 switches.
VLAN between devices
When VLAN crosses between the devices, by setting the VLAN tag to the frame, the VLAN wherefrom the
frame has come, is distinguished. As a result, similar VLAN A and VLAN B can communicate in such a way that
these are connected with same switching HUB. Usually, 2 transmission lines are required, by using the VLAN
trunk function, however, it can be connected by 1 transmission line in this device.
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