Tuesday, August 31, 2021

VLAN discovery

Won't mention the brand for now, but I'd like to pose a question to fellows networking-guys:

Is it normal, in your opinion, that if you plug a linux computer (with no vlan set on the NIC) in a $that_brand switch port which is set on a tagged vlan only (only 1 tagged vlan and no untagged vlan allowed), you get an ip through dhcp anyway?
you won't ping anything, no way to exit the internet, but you get an IP anyway and so you acquire information on what subnet that port belongs to?



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