Can I run different stp in the whole switched network? e.g. run pvst in access layer and rapid pvst in distribution layer
And do I need to turn on backbone fast and uplink fast feature in distribution layer switch if I run rstp in that switch?
Thanks for any help
although RSTP is backwards compatible with (802.1D) STP, when you have a switch in the spanning tree topology that runs (802.1D) STP, all switches will revert to STP. So, in your situation, it would not be possible to run RSTP in the distribution layer, and STP in the access layer.
With regard to RSTP and Backbone/UplinkFast: both are natively used by RSTP, that is, RSTP as an enhancement to STP has incorporated both BackboneFast and UplinkFast into its normal operation. There is no need to turn these features on when you run RSTP, since RSTP is already using them anyway...
Does that make sense ?
Have a look at this document as well:
Understanding Rapid Spanning Tree Protocol (802.1w)