vRtrMplsLspTimeUp 1.3.6.1.4.1.6527.3.1.2.6.2.1.4

The total time in 10-millisecond units that this LSP has been been operational. For example, the percentage up time can be determined by computing (vRtrMplsLspTimeUp/vRtrMplsLspAge * 100 %).