Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 - Manual (Page 68)

Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 68 www.weidmuller.com Rev 2.136
VLAN ID A valid 12 bit IEEE802.1Q VID, with a range of 1-4095. The VLAN ID will be added
to all outgoing VLAN tagged frames for this VLAN Group. All incoming VLAN tagged
frames for the VLAN Group must have this VLAN ID.
VLAN Priority An IEEE802.1Q compatible, 3 bit Priority Code Point, with a range of 0-7 where
seven is the highest priority, one is the lowest and zero is the default, which is a
mid-
range “Best Effort” value. The VLAN Priority will be added to all outgoing VLAN
tagged frames for this VLAN Group. Further, the VLAN priority will be used to
determine which of 4 priority radio queues VLAN tagged frames will be queued on
when transmitted via the radio.
Management IP The Management IP is the address of the module if only one VLAN group is
configured. Access to the modules internal web based configuration and IP based
functions (Serial Gateway, Modbus Server, etc.) is done via this Management IP
Address and Subnet Mask.
NOTE: If only one VLAN group is configured it must have a Management IP
and Netmask. If further VLAN Groups are configured, i.e. groups 2-9 they only
need a Management IP and Subnet if access to the modules IP based
functions, i.e. Modbus, web pages, etc. is required.
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)).