Giới thiệu về IP và ATM - Thiết kế và hiệu suất P13
Giới thiệu về IP và ATM - Thiết kế và hiệu suất P13
PRIORITIES ATM networks can feature two forms of priority mechanism: space and time. Both forms relate to how an ATM buffer operates, and these are illustrated in Figure 13.1. Space priority addresses whether or not a cell is admitted into the finite waiting area of the buffer. Time priority deals with the order in which cells leave the waiting area and enter the server for onward transmission. Thus the main focus for the space priority mechanism is to distinguish different levels of cell loss pe