This configuration document will guide you through how to configure VLAN interfaces on CradlePoint Routers, and will feature a typical Enterprise VLAN topology design implementation.
VLAN interface configuration is recommended for the following CradlePoint Routers:
- Virtual LAN (VLAN): Distinct broadcast domain of a single layer-2 network, configured using software rather than hardware. Achieved by adding 802.1Q headers to Ethernet Packets.
- VLAN Interface: A layer-3 interface that allows for VLAN tagging on specific Ethernet port groups
- Trunk Port: Ethernet port that sends and receives tagged frames from more than one VLAN
For this example, we are going to use the following network topology design. We will split up the network devices into 7 different IP networks. These networks were designed much like a typical enterprise network for a datacenter that segments and separates physical and virtual servers and storage arrays. Below is a list of the VLANs and IP addressing information that are presented in this document. All of the networks will need to be configured with 802.1Q VLAN tagging for Trunking multiple VLANs over a single Ethernet port. All networks will participate in VLAN packet tagging.
Note: The following configuration examples were written for the MBR1400, but can be applied to any CradlePoint router that supports VLANs
Step 1: Ethernet Port Configuration
Our topology will require Trunking of all IP networks on one orange Ethernet port to a single core switch. To achieve this, we will need to do the following:
- Create a new port group, by choosing Ethernet Port Configuration under Network Settings > WiFi / Local Networks.
- Click Add.
- Give the Ethernet port group a name, and move the desired port to the “Selected” side. Click Submit.
- If your network design involves trunking to more than a single switch, then simply add more ports to the Selected side while configuring. The configuration should look something similar to the image below.
*Note* If you are currently managing the CradlePoint router from the orange port you are connected to, this step will cause loss of connectivity to the router. Managing the CradlePoint router from another LAN port, or using WiFi, is recommended for the duration of this configuration example.
Step 2: VLAN Interface Configuration
We will create the VLAN interfaces that will later be associated with specific IP networks, for now this step will associate a VLAN interface (VID tag number) with the selected port group, specifically the Dot1QTrunk group we just configured.
- Navigate to the VLAN Interfaces tab under Network Settings > WiFi / Local Networks
- Create a new VLAN by selecting the Add button.
- Fill in the VID and the Port Group the VLAN interface will apply to.
- In this configuration example, we will create 7 VLAN interfaces, one for each of the following VIDs; 101, 110, 111, 191, 171, 172, and 192. Ethernet Port group Dot1QTrunk should be selected for all 7 VLAN’s.
Step 3: IP Networks
- To add a new IP network, click Add under “Local IP Networks.”
- On the General Settings tab, name your network and check the Enabled box.
- On the IPv4 Settings tab, set the IP address according to your topology.
- On the interfaces tab, make sure you move the VLAN ID to “Selected”.
- Click Submit.
*Note* – You can add your WiFi SSID’s to any network. It is recommended to not add public WiFi to any management VLAN’s.
FINAL CONFIGURATION SHOULD LOOK LIKE THE BELOW.