The value of tmnxMcPathBwPlcyT2PathMbs specifies Maximum Buffer
Size(MBS). The value of tmnxMcPathBwPlcyT2PathMbs overrides the default
MBS for each individual path's queue. The default value of
tmnxMcPathBwPlcyT2PathMbs is the default value of primary path's queue.
The default value of tmnxMcPathBwPlcyT2PathMbs for the secondary path
is 4000.