SWT
GIGABIT/FAST ETHERNET SWITCH TYPE SWT 47/137
USER GUIDE - M0SWTA1903Iv09 - V09 March 2019
The page related to the Ports menu has two well differentiated sections, which are
described below.
Ports:
• #. It identifies the port number, and it coincides with the equipment connector
number. The last four ports are always associated with the SFP ports.
• Enable. This permits a port to be enabled or disabled, by ticking or not ticking the
respective Enable box.
• VLAN function. It specifies the port behaviour when processing the tag 802.1q,
where the options are edge, trunk, untag, native, QinQ Core or QinQ Access.
Edge: The 802.1 frames will be transmitted with the same 802.1q configuration
they had when they are received by the switch, that is, if the received frame
included a tag, it will be transmitted with a tag, and if the received frame did not
include a tag, it will be transmitted without a tag.
Trunk: All the frames will in all cases be transmitted with a tag. It is the specific
mode for connection with other switching equipment, so as to preserve the VLAN
information between switches.
Untag: The 802.1 frames will be transmitted without a tag, regardless if they have
a tag or not when they are received by the equipment.
Native: The native mode is equivalent to Trunk mode, except that the frames
belonging to the VLAN that matches the configured VID are transmitted without tag.
This mode of operation is equivalent to Native VLAN of Cisco, with the
consideration that the native VLAN is port-to-port defined by means of the VID
parameter.
QinQ Core. All frames are always transmitted with double tag (Double tagged).
It is the specific mode for the connection to a third-party network from which a
privative tag has been obtained.
QinQ Access. All frames are always transmitted with tag. It is the specific mode
for the interface that accepts the traffic that will be transmitted to a third-party
network using double tagging.
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