Networking noob here. Trying to learn networking with my homelab (virtualized Opnsense) and a friend with experience.

I’m having a conversation with this friend about setting up VLANs and he was saying not to use trunk ports cause they can get congested with too much traffic and slow down the network. Based on what I’ve researched online, it didn’t sound entirely right to me.

I can see where’s he’s coming from if you’re using a trunk port as an uplink to another switch or you’re doing inter VLAN routing, but my case was one gigabit switch with multiple VLANs and using the trunk port to uplink to the gigabit port on the router. From my understanding, you’re pretty much limited by your internet speed at that point.

Not sure if I’m even correct so any help would be appreciated.