Folks,
maybe someone can share insight with me as 802.1Q left me not much wiser... I *do* understand (I think) about *sending* priority-tagged into a network. I am, however, puzzled what frames shall look like, per 802.1, in the reverse direction, that is, sent from a switch to a station.
Would the switch transmit frames always untagged, tagged, prio-tagged, or would it just depend on the VLAN setting (tagged, untagged) on that port? I'd not be interested in what *could* be done, or is done in some implementation but would be desperate for what would be an 802.1-compliant behavior of such switch.
I tend believing that *sending out* prio-tagged frames off a switch won't be allowable while I could imagine both untagged or tagged be permitted per 802.1, just depending on the VLAN settings for the PVID of the port in question.
Anyone willing to shed little more light on me? ;-)
Thanks, /Thomas.