Discovered something on my network today that has me a little confused. I have an unmanaged dell powerconnect 2848 (no vlan tagging) with a hypervisor+vms plugged into it that has a few virtual nics. The vNIC's have vlan tags for the network they are doing DHCP for. This powerconnect is connected to another managed switch that has devices requesting DHCP via a proper VLAN configuration on the ports. My question is, how the hell are the endpoints getting IPs if the switch is not passing vlan traffic? Wouldn't the broadcast traffic not make it to the proper interface considering the vNIC is tagged/switch doesn't know what it is?
also there is no helper or relay setup
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