stpxPreferredMISTPInstancesMap
1.3.6.1.4.1.9.9.82.1.7.5.1.1
A string of octets containing one bit per MISTP instances
in the management domain on this trunk port. The first octet
corresponds to MISTP instances with InstIndex values of 1
through 8; the second octet to MISTP instances 9 through 16;
etc. The most significant bit of each octet corresponds to
the lowest value instanceIndex in that octet. The number of
bits for this mib object will be determined by the value of
stpxMISTPInstanceNumber.
For each instance, if it is preferred on this trunk port,
then the bit corresponding to that instance is set to '1'.
To avoid conflicts between overlapping partial updates by
multiple managers, i.e., updates which modify only a portion
of an instance of this object (e.g., enable/disable a single
instance on the trunk port), any SNMP Set operation
accessing an instance of this object should also write the
value of vlanTrunkPortSetSerialNo.