VLAN

Last modified: 28 Feb 2025

About VLAN and the blue’Log

Certain setups, such as control cabinets, require distinct communication networks for grid operators, devices, and the internet/WAN (wide area network). The blue'Log VLAN feature addresses this requirement. The feature uses virtual networks (VLANs) via a managed switch typically located within the control cabinet.

• The blue'Log functions as a network bridge and uses VLANs to define routes for the networks.

• Since the blue'Log has only one Ethernet port, physical network segmentation is handled by a managed switch where multiple VLANs are configured.

• It is essential to match the blue'Log's VLAN configurations with those on the managed switch.

• This configuration can also extend to the firewall settings.

The graphic below shows how VLAN can be used to provide separate communication networks: the WAN (internet), the grid operator (compliant with IEC 61850), and the devices (control and monitoring)

Set up a VLAN

Prerequisites

• blue'Log XC or blue'Log XM

• Firmware 28.0.2 or higher

Steps

1. Go to System > VLAN.

2. Select the Plus icon to add a new VLAN.

3. Fill in the mandatory fields:

   • VLAN ID (range 1-4094)

   • IP address

   • Subnet mask

4. Optional: Fill in if needed:

   • Default gateway

   • Primary DNS server

   • Secondary DNS server

   • Modify the MTU (Default: 1500). 

5. Select the Disk icon to save. 

6. If all settings are correct, a virtual LAN interface matching the VLAN settings will be created. All configured VLANs will be displayed in the list.

7. Optional: Adjust firewall settings if required.

Further actions

Edit or delete VLANs

• To edit or delete a VLAN, use the options next to its name in the list.

• For bulk actions, select multiple VLANs by ticking their checkboxes, or tick the checkbox in the table header to select all.

• Use the Save, Cancel, and Delete buttons next to each VLAN to apply changes, but these only affect the specific row where they are selected.