vRtrMplsTpTunnelAge 1.3.6.1.4.1.6527.3.1.2.83.3.1.1.1.9

The value of vRtrMplsTpTunnelAge indicates the number of seconds since this tunnel entry was last updated or otherwise determined to be correct. No semantics of 'too old' can be implied except through knowledge of owner of the tunnel.