rldot1wRStpForceVersionVlan 1.3.6.1.4.1.9.6.1.101.57.4.2.1.1

The Vlan number that the port belongs to, and for which this entry contains Spanning Tree Protocol management information, If STP per device then only one value of 1 is allowed. If STP per a VLAN then all value of 1..4095 are allowed.