PVRST compatibility

PVRST, the "rapid" version of per-VLAN spanning tree (PVST), is a Cisco proprietary protocol. PVRST corresponds to the RUCKUS full implementation of IEEE 802.1w (RSTP). Likewise, PVST, also a Cisco proprietary protocol, corresponds to the RUCKUS implementation of IEEE 802.1D (STP). When a RUCKUS device receives PVRST BPDUs on a port configured to run 802.1w, it recognizes and processes these BPDUs and continues to operate in 802.1w mode.

PVRST compatibility is automatically enabled when a port receives a PVRST BPDU.