Noobie Question Subinterfaces vs Physical Interfaces

JuJuBee

I am brand new to SonicWall. Watching some videos from Jean-Pier Talbot, he setup the LAN on X0 and ALL wifi on X3 using subinterfaces that bridge to physical interfaces.

My question is this: Why not just connect each different WiFi network (Guest vs Business) to a different physical interface?

Suppose we have business wifi and guest wifi. On X3 create subinterface for business wifi on VLAN 100 bridged to X0 and guest wifi on VLAN 200 bridged to X2.

Does the traffic on the LAN connected to X0 need to be on VLAN 100 (on the switch)?

Does the link from the switch to X3 need to be a trunk? (from switch to X3)?

Thanks in advance.

MK

Arkwright

My question is this: Why not just connect each different WiFi network (Guest vs Business) to a different physical interface?

If you need the capacity, or don't have managed switches [and separate APs for guest and business…..we're getting a bit implausible here], then use separate physical interfaces.

If you have managed switches, use VLANs.

I can't think of a reason why you would bridge a VLAN to a physical interface, like this:

On X3 create subinterface for business wifi on VLAN 100 bridged to X0

Not sure what you're getting at here.

JuJuBee

In the video series by Jean-Piere Talbot, at around time index 15:30 in this video:

SonicWall basic configuration step by step (part 1)

He begins his configuration of the interfaces. He bridges the subinterface to X0 so the wifi users get put onto the same network as the LAN (I believe, again I am new to Sonic).

Since my switches are managed, and I can create VLANs, I guess I will use subinterfaces and VLANs.