vRtrMplsP2mpInstMBBTypeInProg 1.3.6.1.4.1.6527.3.1.2.6.25.1.34

The value of vRtrMplsP2mpInstMBBTypeInProg indicates the type of the Make-before-break (MBB) that is in progress. If 'none', then no MBB is in progress.