The value of tmnxMcPathBwPlcyPathMbs overrides the default Maximum
Buffer Size(MBS) for each individual path's queue. The default value
of tmnxMcPathBwPlcyPathMbs is the default value of primary path's
queue. The default value of tmnxMcPathBwPlcyPathMbs for the secondary
and ancillary path is 4000 and 8000 respectively.