This read-write INTEGER, though its source description is empty, applies a percentage adjustment to the cost of a mesh (non-LAN, e.g. WAN backup) network connection, mirroring the percentage-based tuning pattern used elsewhere in this MIB such as ppeBridgingMemory. An administrator uses it to bias a mesh link's attractiveness for path selection without recalculating the underlying meshCost value directly. For example, the admin raises meshCostPercent on a mesh backup link to make it a less attractive alternate path than the primary spanning tree link.