I have MX 400 and MS 350. I have created VLANs in MX 400 until now. I think there are two ways to create a VLAN that needs to be connected to the Internet. 1: Create a VLAN on the MX 400. 2: Create a VLAN in MS 350 and route it to VLAN 1 (Default) of MX 400. Please advise which of 1: 2: is more advantageous in terms of security and operation. Thank you.