Roqos Cores (RCs) support VLAN (Virtual LAN) and IP subnetting for the router-in-a-stick configuration as shown in the following example network.
A Local Area Network (LAN) can be partitioned into multiple VLANs logically. By default only the hosts in a same VLAN can communicate with each other. For inter VLAN and inter subnet communication, an appropriate policy rules should be added.
Following screenshot shows an example configuration on Roqos SASE UI.
The above screenshot shows the Add VLAN/SUBNET page after clicking the VLANS/SUBNETS Add button in Menu > Network > "RC name" > Basic Settings > LAN Settings. This page allows you to add and configure a new VLAN and subnet.
Here are steps on creating a VLAN on Roqos Core appliances:
1. Select VLAN & SUBNET.
2. VLAN ID: Enter a unique VLAN ID (e.g., 20).
3. Name: Enter a descriptive VLAN name (e.g. VLAN20).
4. IP address: Enter a VLAN IP address (e.g. 10.1.10.1)
5. Mask: Enter the subnet mask (e.g., 255.255.255.0).
6. DHCP Start IP Address: Enter the DHCP starting IP address (e.g., 10.1.20.100).
7 DHCP End IP Address: This is the DHCP final IP address in the subnet (e.g., 10.1.20.250).
8 DHCP Server: Toggle this off if you don't want the RC to automatically assign IP addresses within this subnet.
9. Rogue DHCP Server Detection: Toggle this on to enable detection of unauthorized DHCP servers on your network.
10. Enable: Toggle this off if you don't want to enable this VLAN
11. Click Save to apply the settings.
The below screenshot shows the LAN Settings page after adding a VLAN.
Important Considerations:
1. Planning: Before creating a VLAN, plan your network to ensure the VLAN and subnet you choose don't conflict with any existing settings.
2. DHCP Range: If you enable the DHCP server, ensure the start and end address range is appropriate for the number of devices you expect to connect to the VLAN.