Giới thiệu về IP và ATM - Thiết kế và hiệu suất P16
Giới thiệu về IP và ATM - Thiết kế và hiệu suất P16
FIRST-IN FIRST-OUT BUFFERING In the chapters on packet queueing, we have so far only considered queues with first-in-first-out (FIFO) scheduling. This approach gives all packets the same treatment: packets arriving to a buffer are placed at the back of the queue, and have to wait their turn for service, i.e. after all the other packets already in the queue have been served. If there is insufficient space in the buffer to hold an arriving packet, then it is discarded. In Chapter 13, we considered pr