CRS354-48G-4S+2Q+ and VLAN

Other topics MikroTik hardware questions
1

Hi All,

I’m looking into the possibility of creating some VLANs on the above switch. Firstly, is this possible ? Secondly I have had experience in creating VLAN and assigning each VLAN its own IP/Gateway on HP Aruba Switches - Is it similar on Mikrotik ?

Can someone point me in the direction of how I would configure the switch so I can for example;

Configure Port 1 on VLAN 10 - Subnet: 192.168.10.0/24
Configure Port 2 on VLAN 20 - Subnet: 192.168.20.0/24
Configure Port 3 on VLAN 30 - Subnet: 192.168.30.0/23
Configure Port 48 - Uplink port to Firewall.

As the example above I do not want the devices in ports 1,2,3 to be able to communicate to each other - but would be good to know the config should that be needed in the future.
Can I set up DHCP on the VLANs on this switch? So when I plug a device into a port it will be given the correct range

Is it possible to do the above or will I require a layer 3 device - Can this switch do layer 3 ? I have seen mention of it previously.

If the above is not possible what do I need to do to be able to achieve this - place a layer 3 device between the uplink and firewall?

Thanks in advance.

2

CRS switches, running RouterOS, are L3 devices.

The way VLANs are configured on CRS3xx is very well described in this tutorial.

Beware: CRS, being L3 device, will route between all interfaces with L3 setup (e.g. VLANs with IP address set). If you want to run DHCP server for some (or all) VLAN, that VLAN will need corresponding IP address set and will thus become candidate for routing. If you want to use upstream router for routing, you’ll have to include some firewall filters which will block inter-VLAN traffic.