This was very helpful! I'm really a novice on this interesting topic so I'm wondering if someone could answer a very basic question regarding VLAN creation. Let's say you have one large VLAN of 192.168.40.0/22 (default VLAN 1) and you wish to break that up into smaller VLANs - say 10 (10.1.10.0/24) and 20 (10.1.20.0/24). The router is 192.168.40.1 I think my question is, what happens to the default VLAN 1 if you want to keep that subnet of 192.168.40.0/22 as the transit VLAN as was described in the video? I'm assuming you can't just simply create a new SVI for 192.168.40.0/22 and assign it VLAN 40 since it is already in use as the default VLAN 1. I hope my question makes some sense. I'm missing something obvious here so thank you kindly for any insights on this.
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