This read-write INTEGER (4..12) specifies the difference between the read and write pointer of a link in the common cell buffer; it is not supported in Forum Compliant IMA. An administrator tunes this as a tradeoff between buffer latency, which is reduced at lower values, and the risk of the whole IMA group stalling for a cell-time because one bonded link is running slightly slower than the others. For example, setting this value toward the lower end of the range minimizes added latency but increases the chance that a single slightly slower link momentarily stalls the entire bonded group.