Why am I writing this? As I worked on upgrading my home network with a NixOS router, I found myself once again needing to update the VLAN configuration on my Aruba Instant On 1930 PoE switch. However, I felt hesitant to do so due to my previous struggles in grasping the concept of VLAN despite reading multiple online articles.
Fortunately, my friend Hao recommended an informative post on the topic which, combined with an hour of experimentation, finally allowed me to understand VLAN sufficiently to implement my ideas.