Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-E-G/A User Manual
Rev.
2.16
www.weidmuller.com
66
Management
Netmask
The IP network mask of the Management IP, see above.
Bridge STP
Turns on Spanning Tree Protocol (STP) for the Bridge. STP prevents network loops
that can cause broadcast storms.
Bridge Priority
The STP priority number for the bridge. This value should be set in context with
other devices that are connected on the same network.
Interface Membership
Each VLAN Group has a configurable Interface membership list. The membership list will allow up to 12 possible
interfaces to be added. The following configurable parameters will apply to each entry:
Interface
Select interface from the drop down list to be used for the VLAN Group. Available
interfaces are, Ethernet, Wireless or one of the 10 WDS Repeater connections that
correspond to configured entries on the Repeaters page.
Type
Specifies whether the interface is to support VLAN tagged or untagged frames. When
untagged is specified, all incoming frames on the interface must be untagged, and all
outgoing frames will be sent untagged. When tagged is specified, all incoming frames
must have a VLAN tag with VLAN ID matching the configured VLAN ID for the VLAN
Group; all outgoing frames on this interface will have a VLAN tag added with the
configured VLAN ID and Priority for that VLAN Group.
Examples
Example 1 - Basic VLAN
A common use for VLAN functionality in a module is to tag data from a VLAN unaware device and send this to a VLAN
trunk. A simple example of this involves bridging between Ethernet and wireless ports for just one VLAN. In the example
illustrated below, the Ethernet interface is tagged and the wireless interface is untagged. Any data arriving at the Ethernet
port is expected to have VLAN tagged data with “VLAN ID 10”, and any data sent from the Ethernet port will have the
VLAN tag added. This example basically allows wireless data from VLAN unaware devices to be bridged with the Ethernet
interface and have VLAN tags added (i.e. the Ethernet connection is now part of a VLAN trunk that will send/receive data
to/from other VLAN aware device(s)).
Figure 58 - VLAN Example 1
The module configuration below shows there are two VLAN groups configured. The first group is used for management of
the module and ensures a connection is maintained for configuration and diagnostic from untagged devices on the VLAN
trunk.