SWT
GIGABIT/FAST ETHERNET SWITCH TYPE SWT
51/137
USER GUIDE - M0SWTA1903Iv09 - V09 March 2019
FIGURE 27
VLANs
menu configuration page
The screen associated to the
VLANs
menu has three distinct sections, which are described
below.
There is a global parameter that affects all the VLANs.
•
Overlapping Enable.
It establishes the switch internal operation mode as regards
the management of the MAC addresses of the different VLANs. The operation
mode is
IVL
(
Independent
VLAN
Learning
) by default. The equipment operates in
SVL
mode (
Shared
VLAN
Learning
) with the option selected.
The
SVL
(
Overlapping
Enabled
) mode is necessary when using topologies with
several VLANs when there is an interface with access to more than one of the
configured VLANs, that is, that
the VLANs share some user interface
, and that
the
clients operate with UNTAGGED frames
. In these cases, the traffic exclusion
is done through the
access control lists
determined for each one of the interfaces
(see the
VID ACL
parameter in section 5.4).
FIGURE 28 shows an example for using the
Overlapping
Enable
parameter.
