Create the same VLAN across multiple interfaces
I am familiar with how to create vlans using sub-interfaces. But what if I want to create the same vlans across multiple interfaces? For example: say I have X0 with sub-interfaces VLAN100, VLAN200, & VLAN300 and I want those same vlans to also be on X2, X3, and X4. Would I portshield X2, X3, and X4 to X0? Or do I need to create VLAN100, VLAN200, & VLAN300 on X2, X3, and X4 as well? Or is there a different method? I'm using a TZ670 on SonicOS 7, btw.