Maybe I'm just thinking too hard on this, trying to separate 802.1d / 802.1w in my head, and how the Cisco version play in to the standards.
So my question is mainly this: if we are using 802.1q, and Cisco devices default to PVST (IEEE), which only works with ISL, is STP actually even running in this situation?
Also, do I understand the standards correctly?
CST (STP, IEEE) - 802.1d (802.1q)
PVST - 802.1d (ISL)
PVST+ - 802.1d (802.1q)
RSTP - 802.1w (802.1q)
RPVST+ 802.1w (802.1q)
Is this correct?