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DES-3200-10/18/28/28F Layer 2 Ethernet Managed Switch User Manual
Port List (e.g.: 1-6)
Select the specified ports you wish to configure by entering the port number in this field, or tick
the Select All Ports box.
Search Port List
This function allows the user to search all previously configured port list settings and display
them on the lower half of the table. To search for a port list enter the port number you wish to
view and click Find. To display all previously configured port lists on the bottom half of the
window click the Show All button, to clear all previously configured lists click the Delete All
button.
VLAN Trunk Settings
Enable VLAN on a port to allow frames belonging to unknown VLAN groups to pass through that port. This is useful if
you want to set up VLAN groups on end devices without having to configure the same VLAN groups on intermediary
devices.
Refer to the following figure for an illustrated example. Suppose you want to create VLAN groups 1 and 2 (V1 and V2)
on devices A and B. Without a VLAN Trunk, you must first configure VLAN groups 1 and 2 on all intermediary
switches C, D and E; otherwise they will drop frames with unknown VLAN group tags. However, with VLAN Trunk
enabled on a port(s) in each intermediary switch, you only need to create VLAN groups in the end devices (A and B).
C, D and E automatically allow frames with VLAN group tags 1 and 2 (VLAN groups that are unknown to those
switches) to pass through their VLAN trunking port(s).
Users can combine a number of VLAN ports together to create VLAN trunks. To create VLAN Trunk Port settings on
the Switch, select the ports to be configured, change the VLAN Trunk Global State to Enabled, and click Apply, the
new settings will appear in the VLAN Trunk Settings table in the lower part of the window.
To view the following window, click L2 Features > VLAN Trunk Settings:
Figure 3 - 15. VLAN Trunk Settings window
The user-changeable parameters are as follows:
Parameter Description
VLAN Trunk Global
State
Enable or disable the VLAN trunking global state.
Ports
The ports to be configured.
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